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Double layer electrolytic capacitor

Subclass of:

361 - Electricity: electrical systems and devices

361500000 - ELECTROLYTIC SYSTEMS OR DEVICES

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DocumentTitleDate
20080285208Electric Double-Layer Capacitor - Provided is an electric double-layer capacitor. The electric double-layer capacitor comprises an electrode portion composed of an anode and a cathode; a separator for providing electrical isolation between the anode and cathode; and an electrolyte solution which is filled in a space between the anode and cathode so as to form electric double-layers on surfaces of the anode and cathode upon application of a predetermined voltage, and in which a solvent and a solute are mixed so as to have a concentration of 1.25 to 2.5 mol/L.11-20-2008
20130044405High Power and High Energy Electrodes Using Carbon Nanotubes - An electrode useful in an energy storage system, such as a capacitor, includes an electrode that includes at least one to a plurality of layers of compressed carbon nanotube aggregate. Methods of fabrication are provided. The resulting electrode exhibits superior electrical performance in terms of gravimetric and volumetric power density.02-21-2013
20100053844High voltage EDLC cell and method for the manufacture thereof - An EDLC device in which the double layer capacitors themselves are produced lithographically. The resultant EDLC can be of any capacitance and voltage combination for a particular application. The entire lithographically formed entity can be housed in a single container and rated according to its capacitance and voltage standoff characteristics. Through material control processes, the electrochemical composites developed onto the current collector is unilaterally equalized, providing the desired distributed voltage standoffs, thus promoting the ability to design high voltage independent cells without the normal electronic balancing circuitry associated with multiple series-connected electrochemical cells.03-04-2010
20090195964ELECTRIC DOUBLE LAYER CAPACITOR AND METHOD FOR MANUFACTURING SAME - An electric double layer capacitor includes first and second collectors, first and second polarizable electrode layers provided on the first and second collectors, respectively, a separator having an insulating property provided between the first and second polarizable electrode layers, and an electrolytic solution impregnated in the separator and the first and second polarizable electrode layers. A lower electric potential is to be applied to the second collector than to the first collector. The electrolytic solution contains anion including fluorine as electrolyte. The separator includes a separation layer facing the second polarizable electrode layer, and an inhibition layer facing the first polarizable electrode layer. The separation layer contains cellulose. The inhibition layer is made of material different from that of the separation layer. The inhibition layer prevents cellulose from decomposing. This electric double layer capacitor prevents the separator from dissolving, having an excellent long-term reliability.08-06-2009
20090237860FEEDSTOCK COMPOSITION AND RAW COKE FOR ELECTRICITY STORAGE CARBON MATERIAL AND NEEDLE COKE - The present invention provides feedstock compositions for use of the production of an activated carbon for electric double layer capacitor electrodes or the production of needle coke, comprising a first heavy oil with an initial boiling point of 300° C. or higher, an asphalten content of 12 percent by mass or less, a saturate content of 50 percent by mass or more and a sulfur content of 0.3 percent by mass or less, produced as a residue resulting from vacuum-distillation of a petroleum-based oil and a second heavy oil with an initial boiling point of 150° C. or higher and a sulfur content of 0.5 percent by mass or less, produced by subjecting a hydrocarbon oil to fluidized catalytic cracking.09-24-2009
20100053846ELECTRIC DOUBLE LAYER CAPACITOR - It is disclosed that an electric double layer capacitor includes a plurality of cells each including activated-carbon electrodes disposed on both sides of a separator; a plurality of packing members each disposed at an outer periphery of the cell, each of the plurality of cells and the plurality of packing members being stacked through a charge collector; and both end plates sandwiching the plurality of cells and the plurality of packing members through both collector electrodes, at least one of the end plates being formed with an inlet through which an electrolytic solution is injected. Moreover, the electric double layer capacitor is covered and sealed with an enclosing member. Moreover, the electric double layer capacitor includes an O-ring disposed in the inlet, or alternatively, an edge of the inlet is curved.03-04-2010
20090067118ELECTRIC DOUBLE LAYER CAPACITOR - There is disclosed an electric double layer capacitor, wherein an active material for the positive electrode is a graphite or a graphitic material, and an active material for the negative electrode is a graphite or graphitic material different from the active material for the positive electrode, and wherein the capacitor is capable of charging/discharging at a voltage of 2.5 V or higher. The capacitor provides an electric storage system with a high voltage operation, a high capacity and a high energy while retaining the feature of high-speed charge/discharge.03-12-2009
20100008020ELECTRODE DEVICE - Electrodes, electrode devices, and methods of producing electrodes and electrode devices are disclosed. An exemplary method may comprise positioning a current collector between a first electrode film and a second electrode film. The method may also comprise coupling the first electrode film and the second electrode film through a plurality of openings formed in the current collector to secure the first electrode film and the second electrode film to the current collector without using an adhesive. The method may be used to produce electrodes and electrode devices including, but not limited to, double-layer and other compound capacitor devices such as ultra-capacitors and super-capacitors.01-14-2010
20080259525ENERGY STORAGE APPARATUS AND ARTICLE OF MANUFACTURE - An energy storage apparatus and article of manufacture is disclosed. In one embodiment, the energy storage apparatus comprises a jelly roll, having a first and second sheet and a first and second separator member, and at least one terminal element. In another embodiment, an article of manufacture comprising forming a cylindrical housing and stamping a longitudinal indentation on an exterior surface of the cylindrical housing is disclosed. In one alternate embodiment, the longitudinal indentation is adapted to slowly fracture under pressure exerted on an interior surface of the cylindrical housing, thereby preventing catastrophic failure, such as for example an explosion.10-23-2008
20110194231Charge Storage Device - A supercapacitor capable of withstanding SMT manufacturing conditions comprising at least one pair of electrodes having a mixture of carbon particles preferably in a CMC binder on facing surfaces of the at least one pair of electrodes; a porous separator, preferably polyimide, positioned between the facing surfaces of the at least one pair of electrodes; and an electrolyte for wetting the separator wherein the electrolyte comprises an ionic liquid, such as EMITSFI, and optionally a solvent such as PC, GBL or glutaronitrile.08-11-2011
20090122467ELECTRIC DOUBLE-LAYER CAPACITOR AND METHOD FOR MANUFACTURING THE SAME - In an electric double-layer capacitor, resistance of a polarizable electrode layer is reduced and gas generation inside a case is suppressed in an attempt to improve reliability. On that account, an electric double-layer capacitor is provided, which is obtained by housing in a case, together with a driving electrolyte, a capacitor element wound with a separator interposed between electrodes being paired anode and cathode electrodes in each of which polarizable electrode layers are formed on and lead wires are fixed to both sides of a current collector made of metallic foil, such that the polarizable electrode layers are opposed to each other. Further, an electric double-layer capacitor is provided in which the lead wire is fixed to a polarizable-electrode-layer-removed section on the electrode where the polarizable electrode layer has been removed, and an area of the polarizable-electrode-layer-removed section is not smaller than 1 and not larger than 2.0 when a project area of a portion where the lead wire is connected with the current collector is set to 1.05-14-2009
20130077206HIGH VOLTAGE ELECTRO-CHEMICAL DOUBLE LAYER CAPACITOR - An electro-chemical double layer capacitor comprises positive and negative electrodes, where the carbon material that is incorporated into the positive electrode is halogenated carbon material, while the carbon material that is incorporated into the negative electrode is un-halogenated carbon material. Further, the carbon material incorporated into each respective electrode can have a distinct pore size distribution. A pore volume ratio of the carbon material incorporated into the positive electrode is greater than a pore volume ratio of the carbon material incorporated into the negative electrode. The pore volume ratio R is defined as R=V1/V, where V1 is a total volume of pores having a pore size of less than 1 nm, and V is a total volume of pores having a pore size greater than 1 nm.03-28-2013
20090296316CAPACITOR - A capacitor includes a capacitor element, a bottomed, cylindrical, metallic case, a metallic terminal plate, and a sealing rubber. A flange is provided along the outer circumference of the terminal plate. The flange is brought into contact with the bottom face of the sealing rubber for positioning. The case is wrung from the outside thereof so as to compress the sealing rubber. The sealing rubber has at least one of a ring-shaped top projection wall projecting between the metallic case and the terminal plate on the top face thereof, and a ring-shaped bottom projection wall projecting between the metallic case and the flange on the bottom face thereof.12-03-2009
20100118469ELECTROLYTE SOLUTION FOR ELECTRIC DOUBLE LAYER CAPACITOR - An electrolyte solution for electric double layer capacitors, which comprises the following (a) and (b): 05-13-2010
20130077207POROUS CARBON WITH HIGH VOLUMETRIC CAPACITY, FOR DOUBLE-LAYER CAPACITORS, AND PRODUCTION METHOD - An activated, porous carbon has a specific BET surface area of between 1400 and 1900 m03-28-2013
20100033903ELECTRODE FOR SUPERCAPACITOR HAVING MANGANESE OXIDE-CONDUCTIVE METAL OXIDE COMPOSITE LAYER, FABRICATION METHOD THEREOF, AND SUPERCAPACITOR COMPRISING SAME - The present invention provides an electrode for a supercapacitor, a fabrication method thereof, and a supercapacitor comprising the same. The electrode exhibits enhanced specific capacitance and electrical conductivity, among others, due to the fact that it comprises a porous composite metal oxide layer which has the structure of a web of entangled nanofibers or has a nanoparticle network structure.02-11-2010
20130038984COMPOSITION FOR ELECTRODE ACTIVE MATERIAL SLURRY AND ELECTROCHEMICAL CAPACITOR INCLUDING ELECTRODE USING THE SAME - A composition for an electrode active material slurry and an electrochemical capacitor including an electrode using the same. The electrochemical capacitor includes: an electrode having a current collector coated with the composition for an electrode active material slurry including an electrode active material, a material including a nonpolar hydrophobic functional group, and a surfactant; a separator; and an organic electrolyte. Additives improving flowability of the electrode active material slurry and wettability to the electrolyte, thereby increase an effective electrode area contacted with the electrolyte and decrease inner resistance of the electrode, with the result that there can be provided an electrochemical capacitor having higher capacitance and lower electrode resistance when the active material and conductive material are added in the same amount.02-14-2013
20100046144CAPACITOR - A capacitor for use in a hybrid vehicle and the like has a structure contrived to achieve reduction in size, increase in capacitance and decrease in resistance. An element has a pair of positive and negative electrodes, each comprising a collector made of a metallic foil having a carbon-containing electrode layer formed thereon, the electrodes rolled up with a separator interposed therebetween to form a pair of electrode terminations at opposite sides of the element. A dimension of one of the electrode terminations is set shorter than that of the other electrode termination. This structure achieves an increase in capacitance and decrease in resistance since it can increase an effective area of electrode surfaces under a restricted condition of keeping the same height of the element as it is placed inside a casing of given dimensions.02-25-2010
20100046143Storage device - Disclosed is a storage device comprising a positive electrode material containing graphite; a negative electrode material containing an oxide of at least one metal element selected from Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, Sn, Sb, Bi, W and Ta, which may preferably contains a metal oxide containing at least Ti as a metal element; and an electrolyte solution. This storage device has high capacitance and high discharge voltage, thereby having high energy. Consequently, this storage device can have high energy density, while being excellent in cycle performances and rate performances.02-25-2010
20100046142Electrolyte - Electrolyte for use in an energy storage device such as a capacitor or supercapacitor which comprises a solvent (preferably propionitrile) and an ionic species (preferably methyltriethylammonium tetrafluoroborate). The electrolytes provide a low ESR rise rate, a high voltage and permit operation over a wide range of temperatures, which makes them beneficil for use in a range of energy storage devices such as digital wireless devices, wireless LAN devices, mobile telephones, computers, electrical or hybrid electrical vehicles.02-25-2010
20100097742Electrodes Synthesized from Carbon Nanostructures Coated with a Smooth and Conformal Metal Adlayer - High-surface-area carbon nanostructures coated with a smooth and conformal submonolayer-to-multilayer thin metal films and their method of manufacture are described. The preferred manufacturing process involves the initial oxidation of the carbon nanostructures followed by a surface preparation process involving immersion in a solution with the desired pH to create negative surface dipoles. The nanostructures are subsequently immersed in an alkaline solution containing a suitable quantity of non-noble metal ions which adsorb at surface reaction sites. The metal ions are then reduced via chemical or electrical means. The nanostructures are exposed to a solution containing a salt of one or more noble metals which replace adsorbed non-noble surface metal atoms by galvanic displacement. The process can be controlled and repeated to obtain a desired film coverage. The resulting coated nanostructures may be used, for example, as high-performance electrodes in supercapacitors, batteries, or other electric storage devices.04-22-2010
20090154063NON-AQUEOUS ELECTROLYTIC SOLUTION FOR ELECTRIC DOUBLE LAYER CAPACITOR AND ELECTRIC DOUBLE LAYER CAPACITOR USING THE SAME - To provide a non-aqueous electrolytic solution for an electric double layer capacitor excellent in low-temperature characteristics.06-18-2009
20090154062ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor includes a positive electrode, a negative electrode which faces the positive electrode and is isolated therefrom, and an electrolyte solution. The positive electrode includes a first current collector of a metal foil and a first polarizable electrode layer on the first current collector, the first polarizable electrode layer containing a phosphorus compound. The negative electrode includes a second current collector of a metal foil and a second polarizable electrode layer on the second current collector. The electrolyte solution, with which the first and second polarizable electrode layers are impregnated, has fluorine-containing anions as an electrolyte solute.06-18-2009
20090154061ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor comprising: activated carbon electrode layers comprising an activated carbon, conductive adhesive layers, a separator, and electrolytic solution comprising non-aqueous solvent and electrolyte between a top vessel and a bottom vessel; in which the top vessel and the bottom vessel are sealed by being caulked with a gasket; in which the activated carbon layers are 0.3 mm or more in a thickness per a layer, not less than 0.55 g/cm06-18-2009
20090154060Nanoporous Insulating oxide Electrolyte Membrane Ultracapacitor, Button Cell, Stacked Cell and Coiled Cell and Methods of Manufacture and use Thereof - A nanoporous insulating oxide composite electrode and ultracapacitor device, method of manufacture and method of use thereof. The composite electrode being constructed from a conductive backing electrode and an composite layer. Preferably, the ultracapacitor device is configured in a stacked, coiled or button cell configurations and includes composite electrodes. The composite layer being substantially free of mixed oxidation states and nanoporous and having a median pore diameter of 0.5-500 nanometers and average surface area of 300-600 m06-18-2009
20130027844METHOD FOR PREPARING POROUS CARBON NANOFIBERS CONTAINING A METAL OXIDE, POROUS CARBON NANOFIBERS PREPARED USING THE METHOD, AND CARBON NANOFIBER PRODUCTS INCLUDING SAME - The present invention relates to carbon nanofibers, and more particularly, to a method capable of preparing metal oxide-containing porous carbon nanofibers having a high specific surface area by changing the composition of a spinning solution, which is used in a process of preparing carbon nanofiber by electrospinning, and to metal oxide-containing porous carbon nanofibers prepared by the method, and carbon nanofiber products comprising the same.01-31-2013
20130027845ACTIVATED CARBON FOR ELECTRIC DOUBLE LAYER CAPACITOR ELECTRODE AND METHOD FOR PRODUCING THE ACTIVATED CARBON - Provided is a method for producing an activated carbon for an electric double layer capacitor electrode comprising adjusting a carbon material (including a calcined product of a carbon material) in particle size, followed by mixing the carbon material with an alkali activator, and then activating the mixture, wherein the mixing is carried out so that the particle size distribution composed of particles with a size of 300 μm or greater in the mixture of the carbon material and alkali activator is 5 percent or less so that the mixing state of the carbon material and alkali activator can be improved, resulting in a reduction in the ratio of the alkali activator.01-31-2013
20090080141Multi electrode series connected arrangement supercapacitor - The present invention is an electrochemical double layer capacitor (EDLC) series stack formed into a single electrolyte cell structure. The concatenated multiple electrode assembly stack has electrode assemblies electrically connected in series. The electrode assemblies have a double-sided activated carbon electrode formed on a current collector. Power tabs are connected to the end electrode assemblies. An electrolyte is also provided. A poly bag contains the electrolyte and the electrode assemblies. The electrode assemblies form a double-sided activated-carbon electrode on a current collector. The EDLC stack has a number of segments and mass free zones separating them. The segments are folded so that mass free zones are disposed at the apex of each fold.03-26-2009
20130083453ENERGY STORAGE CELL AND ENERGY STORAGE MODULE - An energy storage cell includes an energy storage part for storing electric charges, a container for housing the energy storage part, and a pair of electrode terminals connected to the energy storage part and exposed to the outside of the container. The container is formed to have a thick polygonal outer shape and a groove part linearly extending in a direction perpendicular to a thickness direction is provided in each of a pair of mutually facing side surfaces of the polygonal shape. Each of the electrode terminals includes a base end part connected to a corresponding polarity of the energy storage part in the container and an exposed part exposed to the outside of the container, and the exposed part is formed along an inner side of the groove part.04-04-2013
20130083452SUPER CAPACITOR STRUCTURE AND THE MANUFACTURE THEREOF - Disclosed is a super capacitor and method of manufacture thereof. This invention relates to a solid state super capacitor comprising a solid state polymer electrolyte and a modified carbonaceous electrode. Said modified carbonaceous electrode comprises a conductive carbonaceous material covered with active ingredients. Said modified carbonaceous electrode and said solid state polymer electrolyte are layered on top of each other to form a sandwich-like structure. Said super capacitor performs much better than known super capacitor comprising liquid or gel-form electrolytes. Said super capacitor has higher conductivity, therefore can be manufactured without a current collector. Since said super capacitor contains solid state polymer electrolyte, the method of manufacturing said super capacitor is more environmentally friendly and has a higher safety level.04-04-2013
20130083451VENT ASSEMBLIES FOR ELECTROCHEMICAL DOUBLE-LAYER CAPACITORS - A container of an electrochemical double-layer capacitor includes a housing, a cap portion adapted to be coupled the housing, an orifice passing through one of the housing or the cap portion, and a vent assembly in fluid communication with the container and secured within the orifice. The housing and the cap portion define an interior envelope of the container, and at least a portion of the vent assembly is located inside the interior envelope of the container.04-04-2013
20100328846Electrode for electric double layer capacitor, method of manufacturing the same, and electric double layer capacitor - An electrode for an electric double layer capacitor includes a current collector including an aluminum (Al) foil layer and a highly conductive metal layer having a higher conductivity than Al and laminated on the Al foil layer, a groove formed in the Al foil layer to cause the highly conductive metal layer to contact an electrode material, and an electrode layer formed of the electrode material on the groove and the Al foil layer.12-30-2010
20130070389ELECTRODE FOR ENERGY STORAGE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an electrode for an energy storage and a method for manufacturing the same and provides a useful effect of improving resistance characteristics of an electrode for an energy storage by forming a trench of predetermined dimensions on a surface of a current collector, forming a conductive layer, which includes a conductive agent as much as possible, on the surface of the current collector, and forming an electrode layer including an electrode active material, a conductive agent, and a binder on the conductive layer.03-21-2013
20130050903ELECTRODES, AND ELECTROCHEMICAL CAPACITORS INCLUDING THE SAME - Electrodes and electrochemical capacitors including the same including an electrode active material layer having two layers or more formed on a current collector, wherein the electrode active material layer has a gradient of the specific surface area value to the electric conductivity along a thickness direction of a current collector. Exemplary embodiments manufacture the electrodes having the gradient of the specific surface area value to the electricity conductivity along the thickness direction of the current collector by forming the electrode active material layer having compositions in which a kind of electrode active materials and conductive materials are different along the thickness direction of the current collector. The exemplary embodiments can increase the capacitance of the electrochemical capacitor including the electrode and lower the electric resistance thereof, by appropriately controlling the resistance and capacitance value of the electrode.02-28-2013
20090303659Energy Storage Device - In one embodiment, an energy storage device comprises a first electrode supported by a first collectors sheet; a second electrode supported by a second collector sheet; and a dielectric separator therebetween, all spirally would together. A container houses this spiral winding, with the first collector sheet having an end in contact with the base and the second collector sheet having an end oriented towards an opening opposite to the base. A collector plate is interposed between the second collector sheet and the opening and is restrained in position by a crimp in the container. A lid is positioned in the opening and has one side in electrical contact with the collector plate and an opposite side oriented outwardly of the container. The lid is restrained in position by rolling the one or more container walls over the lid.12-10-2009
20090303660NANOPOROUS ELECTRODES AND RELATED DEVICES AND METHODS - High surface area electrodes formed using sol-gel derived monoliths as electrode substrates or electrode templates, and methods for making high surface area electrodes are described. The high surface area electrodes may have tunable pore sizes and well-controlled pore size distributions. The high surface area electrodes may be used as electrodes in a variety of energy storage devices and systems such as capacitors, electric double layer capacitors, batteries, and fuel cells.12-10-2009
20120218680Ultracapacitor Package Design - A terminal plate for an ultracapacitor package is formed from a single sheet of conductive material and comprising a plurality of bent tabs extending in a direction substantially orthogonal to a first main surface of the terminal plate. The terminal plate is configured to provide direct metallurgical contact between external terminals of the ultracapacitor package and the respective terminals of an electrode set that is incorporated into the package.08-30-2012
20130100584SUPER CAPACITOR WITH GEL ELECTROLYTE OF POLY(ETHYLENE GLYCOL) BLENDING POLY(ACRYLONITRILE) AND MANUFACTURING METHOD THEREOF - Super capacitor including a gel electrolyte and manufacturing method thereof are provided. The gel electrolyte is one selected from a group consisting of a P(AN-EG-AN) copolymer, a P(AN-EG) copolymer, a P(EG-AN-EG) copolymer and a combination thereof.04-25-2013
20110058307Chip-type electric double layer capacitor and method for manufacturing the same - The present invention relates to a chip-type electric double layer capacitor and a method for manufacturing a method for manufacturing the same. The chip-type electric double layer capacitor includes an electric double layer element including two electrodes that include two different polarities and electrode terminals protruded on sides opposite to each other, a first separator that prevents the two electrodes from being short-circuited, and a second separator that is disposed at a position opposed to the first separator on the basis of one electrode of the two electrodes; and a package including package terminals attached to the protruded electrode terminals of the two electrodes, which are formed on the bottom thereof and housing the electric double layer element, wherein the electric double layer element is wound on the basis of the protruded electrode terminals opposite to the two electrodes as a reference axis and the electrode terminals are attached to the package terminals, respectively.03-10-2011
20130058009METAL CURRENT COLLECTOR, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL CAPACITORS WITH SAME - The present invention relates to a metal current collector including a metal substrate having grooves on a surface thereof, a carbon buffer layer formed on the metal substrate, and a conductive layer formed on the carbon buffer layer, a method for preparing the same, and electrochemical capacitors comprising the same. According to the present invention, a metal current collector including a metal substrate having grooves on a surface thereof, a carbon buffer layer formed on the metal substrate, and a conductive layer formed on the carbon buffer layer has a large surface area and low electrical resistance. This metal current collector can be effectively used in electrochemical capacitors with high capacity and high output characteristics by improving contact characteristics with an active material layer.03-07-2013
20110013344Polarizable electrode for capacitor and electric double layer capacitor having the same - There is provided a polarizable electrode for a capacitor and an electric double layer capacitor having the same. The polarizable electrode is a gel-state mixture including carbon nanotubes (CNTs) forming a network structure, porous carbon materials dispersed between the CNTs, and ionic liquids allowing the CNTs and the porous carbon materials to be dispersed. The polarizable electrode secures an electrical connection path between an electrode and a collector and prevents separation between the porous carbon materials and the ionic liquids using the network structure formed by the CNTs. Accordingly, the electric double layer capacitor having the polarizable electrode has low contact resistance between the electrode and the collector and has low possibility of polarization occurrence between the electrode and an electrolyte, resulting in high capacitance and high energy efficiency due to low equivalent series resistance.01-20-2011
20090268377ELECTROLYTE SOLUTION AND SUPER CAPACITOR INCLUDING THE SAME - An electrolyte solution and a super capacitor including the same, which has superior voltage stability, a high operation voltage and a high energy density, are disclosed. The electrolyte solution includes: a C10-29-2009
20090268376ELECTROLYTES AND CAPACITORS - An electrolyte for use in a capacitor. The electrolyte comprising a solvent; a salt comprising a first anion and a first cation; and an additive. The additive is provided in a sufficient quantity to modify a voltage differential across an electric double layer associated with at least one electrode of said capacitor such that said voltage differential is closer to a predetermined voltage breakdown limit for the electrolyte and said at least one electrode than a voltage differential across an electric double layer associated with said at least one electrode and a further electrolyte comprising said solvent and said salt but no additive. A capacitor comprising first and second electrodes and the aforementioned electrolyte. Methods for optimising an electrolyte for use in a capacitor and manufacturing optimised capacitor systems are also presented.10-29-2009
20090268375RAW COKE FOR ELECTRICITY STORAGE CARBON MATERIAL AND NEEDLE COKE - The present invention provides a raw coke having such a structure that the graphitized product resulting from graphitization of the raw coke at a temperature of 2800° C. under an inactive gas atmosphere will have ratios of the crystallite size to the lattice constant of 360 or less in the (002) plane and 1500 or less in the (110) plane, as a raw coke providing active carbon produced by alkali-activating the raw coke, which is reduced in remaining alkali content and can simplify washing operation because washing liquid can easily pass through the activated carbon, or as a raw coke for the production of needle coke.10-29-2009
20090059473ELECTRIC DOUBLE LAYER CAPACITOR - A porous electrolytic solution reservoir which is capable of being impregnated with an electrolytic solution is provided in an exterior case so as to make contact with a separator. The average diameter of the pores in the electrolytic solution reservoir is greater than the average diameter of pores in the separator. The electrolytic solution reservoir is impregnated with a predetermined amount of electrolytic solution, so that the occupation ratio of electrolytic solution within the pores in the separator becomes 50% or more when fully charged, and the occupation ratio of electrolytic solution within the pores in the electrolytic solution reservoir becomes 100% or less when fully discharged.03-05-2009
20130063866ENERGY STORAGE DEVICE AND METHOD THEREOF - The present disclosure is related to hybrid capacitors specifically to PbO03-14-2013
20130163147Method of Manufacturing Electrode Group Unit for Lithium Ion Capacitor and Lithium Ion Capacitor - A method of manufacturing an electrode group unit for lithium ion capacitor that allows reliable welding between a current collecting member and an electrode and that provides a welded portion with a low resistance is provided. A lithium ion capacitor is also provided. An unapplied portion 06-27-2013
20090262484Capacitor, Capacitor Electrode, and Mehtod of Manufacturing Capacitor Electrode Material - A capacitor electrode material having high capacitance and capable of handling large current and a manufacturing method thereof are provided. In addition, a capacitor electrode and a capacitor having high capacitance and capable of handling large current, are also provided.10-22-2009
20090237861Metal getter systems - Metal getter systems for use in electronic devices are provided. The getter systems taught herein include compartmentalized, metal getter systems for use in electrolytic environments present within electrolytic devices, such as electrolytic capacitors, without the problem of getter passivation. Such systems (09-24-2009
20090231781ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor includes a first collector, a first polarizable electrode layer provided on the first collector, a second collector, a second polarizable electrode layer provided on the second collector and facing the first polarizable electrode layer, a separator having an insulating property and provided between the first polarizable electrode layer and the second polarizable electrode layer, and a driving electrolyte impregnated in the first polarizable electrode layer and the second polarizable electrode layer. The polarizable electrode layers mainly contain activated carbon made from phenol resin, have a surface roughness not larger than 0.6 μm, and have an electrode density ranging from 0.5 g/cm09-17-2009
20090231780Electrolyte Solution, Electrochemical Device Using Same, and Electronic Device - An electrolyte solution used for an electrochemical device including an electrolyte and at least one of fluoro-containing compounds represented by the general formula (1):09-17-2009
20120113566ELECTROCHEMICAL DEVICE - Provided is an electrochemical device which is capable of suppressing problems affecting the capacitor element as a whole, such as a drop in its voltage resistance characteristics and shortening of its life. The capacitor element (05-10-2012
20120113565ELECTRODE FOR SUPER CAPACITOR HAVING METAL OXIDE DEPOSITED ON ULTRAFINE CARBON FIBER AND THE FABRICATION METHOD THEREOF - The present invention discloses an improved electrode for a supercapacitor and a method of preparation thereof. The inventive electrode comprises a collector, a carbon substrate disposed on the collector comprising ultrafine carbon fibers having a specific surface area of at least 200 m05-10-2012
20120113564Lithium ion capacitor and method of fabricating the same - There are provided a lithium ion capacitor and a method of fabricating the same. The lithium ion capacitor includes: a first electrode made of a first electrode material including activated carbon, a water-soluble metal oxide, and a water based binder; and a second electrode disposed to be faced to the first electrode, having a separating film therebetween and made of a second electrode material capable of reversibly containing lithium ions. Therefore, the lithium ion capacitor having improved energy density and output density may be provided, and the fabricating method thereof having environmentally-friendly characteristics and a competitive pricing may be provided.05-10-2012
20130163145ELECTROCHEMICAL ENERGY STORAGE SYSTEM - An electrochemical energy storage system includes a positive electrode, a negative electrode disposed proximally to and not in contact with the positive electrode, and a non-aqueous electrolyte, wherein the positive electrode and the negative electrode are immersed in the non-aqueous electrolyte, and a case is presented in the energy storage system to accommodate the non-aqueous electrolyte, the positive electrode, and the negative electrode. The positive electrode has a porous matrix having a plurality of micrometer sized pores and nanostructured metal oxides, wherein the porous matrix is a 3-dimensional (3D) mesoporous metal or a 3D open-structured carbonaceous material, and the nanostructured metal oxides are coated inside the plurality of pores of the porous matrix. The non-aqueous electrolyte includes organic salts having acylamino group and lithium salts characterized as LiX, wherein Li is lithium and X comprises ClO06-27-2013
20120236466Lithium Ion Capacitor and Layered Member for Lithium Ion Capacitor - A mass-producible lithium ion capacitor that allows lithium ions to be easily occluded by a negative electrode in advance is provided. A layered member includes: two copper foils each having a portion in which tabs are formed on one side along the longitudinal direction of the copper foils, and a portion in which a large number of through holes are formed and which is disposed adjacent to the portion with the tabs, and lithium metal having a thin plate shape and sandwiched between the copper foils to contact the portions with the through holes of the copper foils. The tabs are joined to a negative current collector ring, and electrically connected to a negative current collecting member. By leaving the layered member to stand for a predetermined period, it is possible to cause lithium ions to be occluded by a negative active material of the lithium ion capacitor.09-20-2012
20130163146ELECTRODE ACTIVE MATERIAL-CONDUCTIVE AGENT COMPOSITE, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL CAPACITOR COMPRISING THE SAME - The present invention relates to an electrode active material-conductive agent composite including an electrode active material and a conductive agent, a method for preparing the same, an electrochemical capacitor comprising the same.06-27-2013
20130163148ELECTRODE FOR ELECTROCHEMICAL CAPACITOR AND ELECTROCHEMICAL CAPACITOR USING SAME - A negative electrode for an electrochemical capacitor includes a current collector having electric conductivity, and an electrode layer formed on a surface of the current collector and having cations stored therein. In at least a part of the electrode layer, a value of ratio I06-27-2013
20110032661MULTI ELECTRODE SERIES CONNECTED ARRANGEMENT SUPERCAPACITOR - The present invention is an electrochemical double layer capacitor (EDLC) series stack formed into a single electrolyte cell structure. The concatenated multiple electrode assembly stack has electrode assemblies electrically connected in series. The electrode assemblies have a double-sided activated carbon electrode formed on a current collector. Power tabs are connected to the end electrode assemblies. An electrolyte is also provided. A poly bag contains the electrolyte and the electrode assemblies. The electrode assemblies form a double-sided activated-carbon electrode on a current collector. The EDLC stack has a number of segments and mass free zones separating them. The segments are folded so that mass free zones are disposed at the apex of each fold.02-10-2011
20110075322ELECTROCHEMICAL CAPACITOR - An electrochemical capacitor capable of increasing a capacity is proposed. The electrochemical capacitor is a positive electrode and a negative electrode formed over a surface plane of a substrate. Additionally, the electrochemical capacitor has an electrolyte, and the positive electrode and the negative electrode are in contact with a same surface plane of the electrolyte. In other words, the electrochemical capacitor has a positive electrode active material and a negative electrode active material over a surface plane of an electrolyte, a positive electrode current collector which is in contact with the positive electrode active material, and a negative electrode current collector which is in contact with the negative electrode active material. By the aforesaid structure, a capacity of the electrochemical capacitor can be increased.03-31-2011
20100202101ENERGY STORAGE SYSTEM - An energy storage system includes an electric component, a solvent, and a protective device which chemically binds the decomposition products of the solvent. Any damage to the surroundings, which could be caused by the decomposition products of the solvent, can be prevented using the novel energy storage system.08-12-2010
20110051316Mesoporous Metal Oxide Graphene Nanocomposite Materials - A nanocomposite material formed of graphene and a mesoporous metal oxide having a demonstrated specific capacity of more than 200 F/g with particular utility when employed in supercapacitor applications. A method for making these nanocomposite materials by first forming a mixture of graphene, a surfactant, and a metal oxide precursor, precipitating the metal oxide precursor with the surfactant from the mixture to form a mesoporous metal oxide. The mesoporous metal oxide is then deposited onto a surface of the graphene.03-03-2011
20110102972Chip-type electric double layer capacitor cell and method of manufacturing the same - There is provided a chip-type electric double layer capacitor comprising: a resin case having a housing space provided therein and formed of insulating resin and first and second external terminals inserted into the resin case by insert injection molding. Each of the external terminals has a first portion exposed to an outer surface of the resin case for external contact and a second portion exposed to an inner surface of the housing space for internal contact. a sealing portion includes a groove portion provided in the resin case along a circumference of at least one of the first and second external terminals and a resin filling the groove portion. An electric double layer capacitor cell is mounted in the housing space and electrically connected to the second portion of the first and second external terminals.05-05-2011
20090316336BIPOLAR MEMBRANE FOR ELECTROCHEMICAL SUPERCAPACITORS AND OTHER CAPACITORS - A supercapacitor having a bipolar membrane separator having a first side facing the negative electrode of the supercapacitor and having a plurality of cations and a second side facing the positive electrode and having a plurality of anions.12-24-2009
20090147442ELECTRIC DOUBLE-LAYER CAPACITOR AND METHOD OF PRODUCING SAME - The present invention relates to an electric double-layer capacitor and a method for producing same capable of evenly and rapidly doping a negative electrode layer with lithium ions. The electric double-layer capacitor comprises: a positive electrode including a positive electrode layer formed on one surface of a positive electrode current collector; a negative electrode including a negative electrode layer formed on one surface of a negative electrode current collector; a first separator disposed between the positive electrode layer and the negative electrode layer; and a second separator disposed between the positive electrode current collector and the negative electrode current collector, in which the negative electrode includes holes penetrating through the negative electrode current collector and reaching the negative electrode layer.06-11-2009
20100195269HYBRID SUPERCAPACITOR USING SURFACE-OXIDIZED TRANSITION METAL NITRIDE AEROGEL - It discloses a hybrid supercapacitor including a carbon aerogel cathode and a surface-oxidized transition metal nitride aerogel anode which is able to increase energy density and power density with increase of overall cell potential and at the same time lower internal resistance of the electrode and equivalent series resistance by using a monolithic electrode with no use of current collector and binder.08-05-2010
20090303658Electrode for Electric Double Layer Capacitor and Electric Double Layer Capacitor - Disclosed is an electric double layer capacitor that comprises: a polarizable electrode containing a carbon material having graphite-like microcrystalline carbon; and an electrolyte containing a spiro compound represented by the general formula12-10-2009
20110080689Ionic Liquids for Use in Ultracapacitor and Graphene-Based Ultracapacitor - One embodiment of the current disclosure provides an ultracapacitor including at least one graphene-based electrode, an electrolyte containing an ionic liquid, and a dielectric separator dividing the ultracapacitor into two chambers, each chamber containing an electrode and a portion of the electrolyte. In another embodiment, the graphene has been expanded by exposure to microwave radiation then chemically activated. Another embodiment of the current disclosure provides an electrochemical energy storage device containing such an ultracapacitor. Still other embodiments of the disclosure relate to ionic liquids, some of which may be suitable for use in an ultracapacitor, methods of synthesizing such liquids, and methods of designing such liquids. Further embodiments relate to methods of using ultracapacitors, for example in automobiles, power grids, high-temperature applications, and other applications.04-07-2011
20110286149Electric double layer capacitor package and method of manufacturing the same - There is provided an electric double layer capacitor package and a method of manufacturing the same. The electric double layer capacitor package includes an exterior case formed of insulating resin and having therein one or more partitions providing a plurality of housing spaces; a plurality of capacitor cells disposed in the plurality of housing spaces, respectively, each capacitor cell including first and second electrodes and a separator interposed between the first and second electrodes; and an internal series-connection terminal buried in each of the partitions and connecting the plurality of capacitor cells in series.11-24-2011
20110286150Ultracapacitors employing phase change materials - Implementations and techniques for employing phase change materials in ultracapacitor devices or systems are generally disclosed.11-24-2011
20110286148Electrochemical device and method for manufacturing the same - There is provided an electrochemical device and a method for manufacturing the same. The electrochemical device includes: a collector that includes first and second electrodes disposed opposite to each other and an ion transmittable separator disposed therebetween; and a fixing member that surrounds the external surface of the collector and fixes the collector by bending parts formed at both ends. The electrochemical device can minimize the movement of the collector and maximize the overlapping portion between the first and second electrodes, thereby having excellent capacity.11-24-2011
20120099244ELECTRODE OF HIGH-DENSITY SUPER CAPACITOR AND METHOD FOR MANUFACTURING SAME - Provided is a supercapacitor electrode that is coupled on one side or both sides of a collector, in which the supercapacitor electrode consists of a carbon material that forms an electric double layer, in which the carbon material consists of: a powder-shaped electrode active material; a powder-shaped conductive material; and a fibrous carbon material of a aspect ratio of 3-33. The supercapacitor electrode can be implemented into a high-capacitance or high-power supercapacitor together with low equivalent series resistance.04-26-2012
20110299223HYBRID SUPER CAPACITOR USING COMPOSITE ELECTRODE - Provided is a hybrid super capacitor using a composite electrode that may enhance equivalent series resistance (ESR) using a carbon nanotube chain. The hybrid super capacitor includes: an anode 12-08-2011
20090122466ELECTROCHEMICAL CAPACITORS - The present invention relates to the field of capacitors, and in particular electrochemical double layer capacitors which include separators comprising a porous layer of polymeric nanofibers and an antioxidant.05-14-2009
20110292571HALOGENATED ACTIVATED CARBON MATERIALS FOR HIGH ENERGY DENSITY ULTRACAPACITORS - A method for producing a halogenated activated carbon material includes heating a natural, non-lignocellulosic carbon precursor in an inert or reducing atmosphere to form a first carbon material, mixing the first carbon material with an inorganic compound to form a mixture, heating the mixture in an inert or reducing atmosphere to incorporate the inorganic compound into the first carbon material, removing the inorganic compound from the first carbon material to produce an activated carbon material, and treating the activated carbon material with a halogen source to form a halogenated activated carbon material. The halogenated activated carbon material is suitable to form improved carbon-based electrodes for use in high energy density devices.12-01-2011
20110292570PROCESS FOR ENCAPSULATING METALS AND METAL OXIDES WITH GRAPHENE AND THE USE OF THESE MATERIALS - The invention relates to a process for coating nanoparticles with graphene, comprising the steps of 12-01-2011
20110292569MULTI-LAYERED ELECTRODE FOR ULTRACAPACITORS - A multi-layer electrode includes a current collector having opposing first and second major surfaces, a fused carbon layer formed over one or both of the major surfaces, a conductive adhesion layer formed over each fused carbon layer, and an activated carbon layer formed over each conductive adhesive layer. The multi-layer electrode can be incorporated into a high energy density, high power density device such as an electric double layer capacitor.12-01-2011
20090103242Electrode with Reduced Resistance Grid and Hybrid Energy Storage Device Having Same - An energy storage device includes at least one positive electrode comprising a current collector comprising lead and having a plurality of raised and lowered portions with respect to a mean plane of the current collector and slots formed between the raised and lowered portions, wherein lead dioxide paste is adhered to and in electrical contact with the surfaces thereof; and a tab portion; and at least one negative electrode comprising a carbon material.04-23-2009
20100033901Dry-particle based adhesive electrode and methods of making same - A dry process based capacitor and method for making a self-supporting dry adhesive electrode film for use therein is disclosed.02-11-2010
20100033900CAPACITOR - The capacitor includes element (02-11-2010
20100033898Electrode for energy storage device - Particles of active electrode material are made by blending or mixing a mixture of activated carbon, optional conductive carbon, and binder. In selected implementations, the activated carbon particles have between about 70 and 98 percent microporous activated carbon particles and between about 2 and 30 percent mesaporous activated carbon particles by weight. Optionally, a small amount of conductive particles, such as conductive carbon particles may be used. In one implementation, the binder is inert. The electrode material may be attached to a current collector to obtain an electrode for use in various energy storage devices, including a double layer capacitor.02-11-2010
20100014215Recyclable dry particle based electrode and methods of making same - A dry process based capacitor and method for using one or more recyclable electrode structure is disclosed.01-21-2010
20090257171Coating Liquid for Manufacturing Electrode Plate, Undercoating Agent, and Use Therof - This invention relates to a coating formulation for manufacturing an electrode plate, which contains a solution of a hydroxyalkylchitosan and an organic acid and/or its derivative in an aprotic polar solvent, and an active material added to the solution and kneaded with the solution, the electrode plate, a manufacturing process of the electrode plate, a battery, a capacitor, and an undercoating formulation. According to this invention, a coating formulation for manufacturing an electrode plate for a nonaqueous electrolyte secondary battery or an electrode plate for an electric double layer capacitor having excellent adhesion and improved contact resistance between an active material layer and a collector, the electrode plate, its manufacturing process, the battery and the capacitor can be provided.10-15-2009
20090201630PHOSPHORUS COMPOUND-COMPLEXED ACTIVATED CARBON FOR ELECTRIC DOUBLE LAYER CAPACITOR AND METHOD FOR PRODUCING THE SAME - A phosphorus compound-complexed activated carbon capable of easily realizing an electric double layer capacitor having high capacitance per unit volume and excellent durability is provided. A phosphorus compound-complexed activated carbon for an electric double layer capacitor having a phosphorus atom content of 1,000 ppm or more, and 20,000 ppm or less, a BET specific surface area of 1,600 m08-13-2009
20110261502CHARGE STORAGE DEVICE ARCHITECTURE FOR INCREASING ENERGY AND POWER DENSITY - Provided is a new charge storage device structure, incorporating a double layer supercapacitor (DLS) material, electrochemical supercapacitor (ECS) material and/or battery material. More specifically, the DLS material, ECS material and/or battery material may form multilayer electrode structures. Additionally or alternatively, the DLS material, ECS material and/or battery material may form electrode structures in which the DLS material, ECS material and/or battery material are in contact with both a common current collector and electrolyte. The present invention can be generalized towards other energy storage devices, opening a new avenue for a large spectrum of device applications.10-27-2011
20090219672Microporous Film for Electric Storage Device Separator and Electric Storage Device Separator Using the Same - There are provided a microporous film for an electric storage device separator, which can increase energy density and power density when used in an electric storage device, and which is excellent in handling properties in a processing step to the electric storage device, as well as an electric storage device separator and an electric storage device, using the microporous film. Specifically, provided is a microporous film for an electric storage device separator, characterized by including a porosity of 70% or more, a strength of 40 MPa or more in a longitudinal direction, an average pore size of from 40 to 400 nm, anuclear pores, and exhibiting biaxial orientation.09-03-2009
20090147441Closed-Type Capacitor - A closed type capacitor (06-11-2009
20110170236SUPERCAPACITORS USING NANOTUBE FIBERS AND METHODS OF MAKING THE SAME - An electrochemical double layer capacitor utilizing nano-fibers in the electrodes for increased performance. The use of nano-fibers significantly increase the surface area of the opposing electrodes for greater levels of specific energy compared to traditional double layered capacitors using activated carbon.07-14-2011
20080266752THERMAL INTERCONNECTS FOR COUPLING ENERGY STORAGE DEVICES - A thermally fitted interconnect couples energy storage cells without the use of additional materials of fasteners. Variations of the interconnect can be used to facilitate fitting of multiple energy storage cell with multiple cell to cell spacings in a rapid and inexpensive manner.10-30-2008
20090310281WOUND ELECTRIC DOUBLE-LAYER CAPACITOR - A wound electric double-layer capacitor suppresses electrochemical reaction on polarized electrode layers, reduces characteristic degradation, and has high reliability. The capacitor has a capacitor element formed by winding positive and negative electrodes with a separator interposed between them, a metal case for storing the capacitor element and an electrolyte for driving, and a sealing member for sealing an opening of the metal case. In the positive and negative electrodes, positive and negative electrode lead wires are coupled to exposed parts of current collectors having polarized electrode layers on their both surfaces, respectively. The negative electrode is wound at least one extra turn from the winding end of the positive electrode of the capacitor element, and hence a part where the polarized electrode layers formed in the negative electrode face each other through the separator is formed on the outermost periphery of the capacitor element.12-17-2009
20090154059COMPOSITION COMPRISING A CONDUCTIVE POLYMER IN COLLOIDAL FORM AND CARBON - The present invention relates to compositions capable of forming a coating and comprising a mixture of a conductive polymer in colloidal form and carbon, methods for their manufacture and use for high-capacity electrical double layer capacitors to be utilized in various electronic apparatuses, power supplies and the like.06-18-2009
20120293911Graphene Integrated Energy Storage Devices Having Capacitive-Like Properties - Technologies and implementations for graphene integrated energy storage devices having capacitive-like properties are generally disclosed.11-22-2012
20120293914ACCUMULATOR DEVICE - Disclosed is an accumulator device that can prevent aluminum forming an outer container from forming an alloy with lithium even when fine lithium metal powder is isolated from a lithium ion supply source to adhere to the outer container.11-22-2012
20120293915HIGH ENERGY DENSITY STORAGE MATERIAL DEVICE USING NANOCHANNEL STRUCTURE - A capacitor includes a plurality of nanochannels formed in a dielectric material. A conductive film is formed over interior surfaces of the nanochannels, and a charge barrier is formed over the conductive film. An electrolytic solution is disposed in the nanochannels. An electrode is coupled to the electrolytic solution in the nanochannels to form the capacitor.11-22-2012
20120033347ELECTROCHEMICAL CAPACITORS - A method of manufacturing an electrode includes printing an electrode ink on a portion of a substrate using a rotary lithographic printer. The electrode ink is allowed to dry on the substrate. A separator material is printed on the portion of the substrate using the rotary lithographic printer. A sealant wall is printed around the portion of the substrate using the rotary lithographic printer. The substrates are then “stacked” and “folded” in appropriate configurations to obtain a desired capacitance and voltage standoff.02-09-2012
20090279230Electrode structure for the manufacture of an electric double layer capacitor - A method is provided of manufacturing an electrode for an electric double layer capacitor, including mixing an active material, a conductive material and a binder. In this method, Ketjen Black is used as the conductive material and a fluorosurfactant is an additive for enhancing fluidity of the slurry. Also, an electrode for an electric double layer capacitor and an electric double layer capacitor using the electrode are provided. Use of the electric double layer capacitor increases the amount of the active material, so that the electrical capacitance is increased, thus providing the electric double layer capacitor in which the amount of the conductive material is decreased and the electrical resistance is decreased.11-12-2009
20110170237LOW TEMPERATURE DOUBLE-LAYER CAPACITORS USING ASYMMETRIC AND SPIRO-TYPE QUATERNARY AMMONIUM SALTS - Double-layer capacitors capable of operating at extremely low temperatures (e.g., as low as −80° C.) are disclosed. Electrolyte solutions combining a base solvent (e.g., acetonitrile) and a cosolvent are employed to lower the melting point of the base electrolyte. Example cosolvents include methyl formate, ethyl acetate, methyl acetate, propionitrile, butyronitrile, and 1,3-dioxolane. A quaternary ammonium salt including at least one of triethylmethylammonium tetrafluoroborate (TEMATFB) and spiro-(1,1′)-bipyrrolidium tetrafluoroborate (SBPBF07-14-2011
20110170233Chip-type electric double layer capacitor cell and method of manufacturing the same - There is provided a chip-type electric double layer capacitor cell and a method of manufacturing the same. The chip-type electric double layer capacitor cell includes a separator folded to include first and second folded portions with first and second open portions formed in opposite directions by the first and second folded portions, and first and second electrodes inserted into the first and second open portions. The positions of the first and second electrodes are fixed by the first and second folded portions of the separator, and accordingly, the appropriate arrangement of the plurality of first and second electrodes is facilitated. A short circuit between the first and second electrodes is avoided to thereby increase the capacitance of the chip-type electric double layer capacitor cell.07-14-2011
20110170235Electric double layer capacitor and method of manufacturing the same - There is provided an electric double layer capacitor including: an exterior case having a housing space provided therein and formed of insulating resin; first and second external terminals buried in the exterior case, each having a first surface exposed to the housing space and a second surface exposed to an outside of the exterior case; and a chip-type electric double layer capacitor cell disposed in the housing space and electrically connected to the first surface. The chip-type electric double layer capacitor cell includes first and second electrodes facing each other and having electricity of opposite polarities applied thereto, at least one induction electrode layer disposed between the first and second electrodes and having no electricity applied thereto, and first and second separators disposed between the first electrode and the induction electrode layer and between the second electrode and the induction electrode layer, respectively.07-14-2011
20080212262Piezoelectric Ultracapacitor - A piezoelectric ultracapacitor is disclosed capable of converting the kinetic energy of ordinary motion into an electrical potential. Multiple piezoelectric ultracapacitors may be configured together to provide an increased output voltage and various materials may advantageously be used. The piezoelectric ultracapacitor of the present invention may be used in various contexts, including power generation, switching and control and memory. An elastomeric piezoelectric ultracapacitor, along with methods of making and operating such a device, is also disclosed. The elastomeric piezoelectric ultracapacitor utilizes the voltage generation capabilities of a piezoelectric ultracapacitor and the generator mode operation of an elastomer actuator, combined and cooperating in novel ways, to provide improved energy generation capabilities.09-04-2008
20090109601CARBONACEOUS MATERIAL FOR ELECTRIC DOUBLE LAYER CAPACITOR AND ELECTRIC DOUBLE LAYER CAPACITOR - An object of the present invention is to provide an electric double layer capacitor carbon material and an electric double layer capacitor which can exhibit excellent charge/discharge characteristics. The carbon material for electric double layer capacitors in accordance with the present invention is characterized in having the BET specific surface area in a range of 300-1000 m04-30-2009
20090262485ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor includes a case, an electrolyte solution accommodated in the case, and an electrode foil immersed in the electrolyte solution. The electrode foil includes a collector and an electrode layer covering the collector. The collector has a first surface and a second surface opposite to the first surface. The collector has apertures provided therein. The apertures communicate with the first surface and the second surface of the collector. The collector includes a projection provided at an edge of at least one aperture out of the apertures. The projection projects from the first surface of the collector and penetrates the electrode layer. The electric double layer capacitor provides a large contact area and a large joining strength between the collector and the electrode layer, and allows the collector to have a small thickness, hence having a large output density and a large energy density.10-22-2009
20090296315ELECTRODE FILM, ELECTRODE AND METHOD FOR ITS PRODUCTION, AND ELECTRIC DOUBLE LAYER CAPACITOR - An electrode film is provided which comprises carbon particles and inorganic particles having a particle diameter within the range of from 1 nm to 100 nm, wherein the carbon particles are bound together by the inorganic particles. In addition, an electrode is provided which has a current collector and an electrode film disposed on the current collector, wherein the electrode film is the aforesaid electrode film. This electrode can be produced by a method which has applying a dispersion liquid containing carbon particles and inorganic particles having a particle diameter within the range of from 1 nm to 100 nm dispersed in a liquid medium, to a current collector to form a dispersion liquid film, and removing the liquid medium from the dispersion liquid film to form an electrode film composed of the carbon particles and the inorganic particles. Furthermore, an electric double layer capacitor in which the aforesaid electrode has been incorporated is provided.12-03-2009
20110170234Electric double layer capacitor - There is provided an electric double layer capacitor including: a multilayer electric double layer capacitor cell including first and second electrodes facing each other with an ion-permeable separator interposed therebetween; and an insulating tape with which to enclose an outer surface of the multilayer electric double layer capacitor cell and having a plurality of pores. In the electric double layer capacitor, movements between the first and second electrodes and the ion-permeable separator are minimized so that the area of the facing surfaces of the first and second electrodes increases. Accordingly, high capacitance may be achieved. In addition, the pores formed in the insulating tape facilitate the path of an electrolyte so that the impregnation of the electrolyte into the multilayer electric double layer capacitor cell is thereby facilitated.07-14-2011
20120293912HYBRID CAPACITOR - Disclosed herein is a hybrid capacitor as a super capacitor including a positive electrode, a negative electrode, a separator, and an electrolyte solution, wherein the positive electrode includes a positive electrode active material including a material obtained by mixing a non-porous carbon material and a porous carbon material, and a positive electrode collector.11-22-2012
20080212261Energy storage devices and composite articles associated with the same - Embodiments of the invention relate to energy storage devices, e.g., capacitors and batteries, that may include a composite article of elongated conductive structures embedded in a polymer matrix. In some embodiments, a liquid containing ionic species may be dispersed within the polymer matrix of the article. The liquid may contact the elongated conductive structures within the polymer matrix. When the composite article is used as an energy storage device, the large surface area at the interface between the elongated conductive structures and the liquid can provide high energy storage. Embodiments of the invention enable storing energy using a composite article that exhibits both high and low temperature stability, high cyclic repeatability, and mechanical flexibility. The composite article can also be non-toxic, biocompatible and environmentally friendly. Thus, the composite article may be useful for a variety of energy storage applications, such as in the automotive, RFID, MEMS and medical fields.09-04-2008
20110199716ELECTRIC DOUBLE LAYER CAPACITANCE DEVICE - The present application is directed to electric double layer capacitance (EDLC) devices. In one aspect, the present application is directed to an electrode comprising an activated carbon cryogel having a tunable pore structure wherein: the surface area is at least 1500 m2/g as determined by nitrogen sorption at 77K and BET analysis; and the pore structure comprises a pore volume ranging from about 0.01 cc/g to about 0.25 cc/g for pores having a pore diameter of 0.6 to 1.0 nm. In another aspect, the present application is directed to an Electric Double Layer Capacitor (EDLC) device comprising an activated cryogel.08-18-2011
20100110613Ultracapacitor electrode with controlled iron content - Particles of active electrode material are made by blending or mixing a mixture of activated carbon, optional conductive carbon, and binder. In selected implementations, iron level in the activated carbon is relatively low, a small amount of conductive carbon with low impurity levels and high conductivity is used, and the binder is inert. For one example, iron content of the activated carbon and the resultant mixture is below 20 ppm. The electrode material may be attached to a current collector to obtain an electrode for use in various electrical devices, including a double layer capacitor. The electrode decreases current leakage of the capacitor.05-06-2010
20100110612Electrode for energy storage device - An energy storage device electrode product is provided. The product comprises: at least one current collector and at least one electrode film disposed adjacent to the at least one current collector. The at least one current collector comprises a plurality of voids extending through a thickness of the current collector, wherein the plurality of voids allow electrolyte to flow through the thickness of the current collector. The plurality of voids extending through the current collector is formed without reducing a surface area of a conductive material of the current collector disposed adjacent to the electrode by more than about fifty percent. A method of producing an electrode product and a double layer capacitor product are also disclosed.05-06-2010
20100110611Highly Porous Activated Carbon With Controlled Oxygen Content - Nanoporous activated carbon material having a high specific capacitance in EDLCs and controlled oxygen content, and methods for making such activated carbon material. Reduction of oxygen content is achieved by (a) curing a carbon precursor/additive mixture in an inert or reducing environment, and/or (b) refining (heating) activated carbon material after synthesis in an inert or reducing environment. The inert or reducing environment used for curing or refining is preferably substantially free of oxygen.05-06-2010
20090086408Electrolytic Solution - There is provided an electrolytic solution comprising a fluorine-containing cyclic carbonate (I) represented by the formula (I):04-02-2009
20080239629METHOD AND STRUCTURE FOR REDUCING CRACKS IN A DIELECTRIC LAYER IN CONTACT WITH METAL - A method and structure for reducing cracks in a dielectric in contact with a metal structure. The metal structure comprises a first metal layer; a second metal layer disposed on, and in contact with the first metal layer, the second metal layer being stiffer than the first metal layer; a third metal layer disposed on, and in contact with the second metal layer, the second metal layer being stiffer than the third metal layer. An additional metal is included wherein the dielectric layer is disposed between the metal structure and the additional metal.10-02-2008
20120170172ADDITIVES FOR ELECTROLYTE SOLUTION AND ELECTROLYTE SOLUTION - An additive of the formula (1) for use in electrolytic solutions07-05-2012
20120170171INKJET-PRINTED FLEXIBLE ELECTRONIC COMPONENTS FROM GRAPHENE OXIDE - An electrical component includes an inkjet-printed graphene electrode. Graphene oxide flakes are deposited on a substrate in a graphene oxide ink using an inkjet printer. The deposited graphene oxide is thermally reduced to graphene. The electrical properties of the electrode are comparable to those of electrodes made using activated carbon, carbon nanotubes or graphene made by other methods. The electrical properties of the graphene electrodes may be tailored by adding nanoparticles of other materials to the ink to serve as conductivity enhancers, spacers, or to confer pseudocapacitance. Inkjet-printing can be used to make graphene electrodes of a desired thickness in preselected patterns. Inkjet printing can be used to make highly-transparent graphene electrodes. Inkjet-printed graphene electrodes may be used to fabricate double-layer capacitors that store energy by nanoscale charge separation at the electrode-electrolyte interface (i.e., “supercapacitors”).07-05-2012
20100142122ACTIVE CARBON, PRODUCTION METHOD THEREOF AND POLARIZABLE ELECTRODE - The present invention relates to an active carbon containing an alkaline earth metal compound inside the particle and having a specific surface area of 10 to 2,000 m06-10-2010
20080266753DENSIFICATION OF COMPRESSIBLE LAYERS DURING ELECTRODE LAMINATION - A compressible and deformable layer is densified and laminated to a layer of a material that is relatively resistant to stretching. The densification and bonding take place in a single step. As used in fabrication of electrodes, for example, electrodes for double layer capacitors, a deformable and compressible active electrode film is manufactured from activated carbon, conductive carbon, and a polymer. The electrode film may be bonded directly to a collector. Alternatively, a collector may be coated with a wet adhesive layer. The adhesive layer is subsequently dried onto the foil. The dried adhesive and foil combination may be manufactured as a product for later sale or use, and may be stored as such on a storage roll or other storage device. The active electrode film is overlayed on the metal foil, and processed in a laminating device, such as a calender. Lamination both densifies the active electrode film and bonds the film to the metal foil. Spreading of the active electrode film in the plane parallel to the plane of the metal foil is reduced or eliminated during lamination, because of the adhesion between the film and the foil.10-30-2008
20080273290Electrochemical Double-Layer Capacitor Using Organosilicon Electrolytes - Disclosed are supercapacitors having organosilicon electrolytes, high surface area/porous electrodes, and optionally organosilicon separators. Electrodes are formed from high surface area material (such as porous carbon nanotubes or carbon nanofibers), which has been impregnated with the electrolyte. These type devices appear particularly suitable for use in electric and hybrid electric vehicles.11-06-2008
20080304207LOW TEMPERATURE DOUBLE-LAYER CAPACITORS - Double-layer capacitors capable of operating at extremely low temperatures (e.g., as low as −75° C.) are disclosed. Electrolyte solutions combining a base solvent (e.g., acetonitrile) and a cosolvent are employed to lower the melting point of the base electrolyte. Example cosolvents include methyl formate, ethyl acetate, methyl acetate, propionitrile, butyronitrile, and 1,3-dioxolane. An optimized concentration (e.g., 0.10 M to 0.75 M) of salt, such as tetraethylammonium tetrafluoroborate, is disolved into the electrolyte solution. In some cases (e.g., 1,3-dioxolane cosolvent) additives, such as 2% by volume triethylamine, may be included in the solvent mixture to prevent polymerization of the solution. Conventional device form factors and structural elements (e.g., porous carbon electrodes and a polyethylene separator) may be employed.12-11-2008
20120293913HYBRID CAPACITOR - Disclosed herein is a hybrid capacitor including: a first structure including a cathode containing activated carbon and an anode containing lithium; and a second structure including activated carbon layers formed on both surfaces of a current collector. With the hybrid capacitor, characteristics of an LIC and characteristics of an EDLC are implemented in a single cell, thereby making it possible to increase energy density and improve output characteristics.11-22-2012
20090109600Oblong electrochemical double layer capacitor - An oblong electrochemical double-layer capacitor is disclosed having a modified jelly roll design and having a plurality of fingers extending from each electrode in substantially the same direction. A packaged electrochemical double-layer capacitor is also disclosed comprising the oblong electrochemical double-layer capacitor having a modified jelly roll design. A method for manufacturing an oblong electrochemical double-layer capacitor having a modified jelly roll design is also disclosed.04-30-2009
20090109599High energy density ultracapacitor - The invention is directed to a carbon composition produced from a carbon precursor, a carbon precursor modifier, and an additive, wherein a mixture of the recited components is formed, the carbon precursor is cured, the resulting mixture carbonized to produce a porous carbon composition. Also disclosed are methods for preparing the carbon composition and for using the carbon composition to fabricate electrodes and electric double layer capacitors comprising the carbon composition.04-30-2009
20090097188Carbon Surface Modifications - Electrode material typically is made from treated carbons. The number of functional groups residing on the treated carbon is reduced before the treated carbon is integrated into an electrochemical double layer capacitor. In one implementation, the number of functional groups on a given treated carbon is reduced by over 80%.04-16-2009
20110205688Multilayer Carbon Nanotube Capacitor - Multilayer carbon nanotube capacitors, and methods and printable compositions for manufacturing multilayer carbon nanotubes (CNTs) are disclosed. A first capacitor embodiment comprises: a first conductor; a plurality of fixed CNTs in an ionic liquid, each fixed CNT comprising a magnetic catalyst nanoparticle coupled to a carbon nanotube and further coupled to the first conductor; and a first plurality of free CNTs dispersed and moveable in the ionic liquid. Another capacitor embodiment comprises: a first conductor; a conductive nanomesh coupled to the first conductor; a first plurality of fixed CNTs in an ionic liquid and further coupled to the conductive nanomesh; and a plurality of free CNTs dispersed and moveable in the ionic liquid. Various methods of printing the CNTs and other structures, and methods of aligning and moving the CNTs using applied electric and magnetic fields, are also disclosed.08-25-2011
20090190286Supercapacitor - The present invention provides a supercapacitor comprising: a) a positive electrode member comprising a solid material comprising pores and an electrically conductive current collector element bonded to said positive electrode member, wherein the pores comprise a non-flowing liquid comprising a first redox reagent; b) a negative electrode member comprising a solid material comprising pores and an electrically conductive current collector element bonded to said negative electrode member wherein the pores comprise a non-flowing liquid comprising a second redox reagent; and c) a separator member disposed between the positive electrode member and the negative electrode member, wherein the separator member comprising an ion exchange membrane, wherein the positive electrode member and the negative electrode member are bonded to opposite interface surfaces of the separator member.07-30-2009
20090027829Electric Double Layer Capacitor01-29-2009
20090027828Supercapacitor and manufacturing method thereof - A supercapacitor and a manufacturing method thereof are disclosed. With manufacturing method of Supercapacitor including: arranging a plurality of filters to be spaced at a designated interval apart, forming a first plating layer connecting one end of the filter, forming a second plating layer lengthened along the filter from the first plating layer, polymerizing to form a conductive polymer layer between the second plating layer, and removing the filter, capacitance (C), power (kw) and energy (E) can be increased as the space for absorbing electrons is widened, by making the surface area of an electrode wider than the a general film.01-29-2009
20130120907CELL DESIGN FOR HIGH ENERGY DENSITY ELECTROCHEMICAL DOUBLE LAYER CAPACITORS - A package for an electrochemical double layer capacitor comprises a housing defining an interior volume, the housing having an end wall, side walls, and an end cap configured to sealably engage with the side walls to enclose the interior volume, wherein the interior volume has a height (h05-16-2013
20130120908Preparation of Electrode Compositions - The invention relates to processes for the preparation of electrode compositions, especially those intended for use in supercapacitors. A process is provided for preparing lithium sulphite comprising the steps of:—a) introducing H05-16-2013
20090141428Electrical Isolator For Capacitive Device - Capacitive devices are described having electrical isolators for electrodes which possess efficient electrical contact between current collectors, electrical isolation of electrodes, and/or electrochemical stability, while minimizing the mechanical stress and strain applied to the electrodes. The capacitive devices are adaptable to a wide range of electrode diameters and electrode stack lengths.06-04-2009
20080316677ULTRACAPACITORS COMPRISED OF MINERAL MICROTUBULES - Disclosed is an ultracapacitor having electrodes containing mineral microtubules, an electrolyte between the electrodes, and a separator in the electrolyte to provide electrical insulation between the electrodes, while allowing ion flow within the electrolyte. The electrodes may be formed from a paste containing microtubules, a conductive polymer containing mineral microtubules, or an aerogel containing the mineral microtubules. The mineral microtubules may be filled with carbon, a pseudocapacitance material, or a magnetoresistive material. The mineral microtubules may also be coated with a photoconductive material.12-25-2008
20090052116ELECTRIC DOUBLE-LAYER CAPACITOR - A plurality of capacitor cells (02-26-2009
20090080142ACTIVATED CARBON AND PROCESS OF MAKING THE SAME - An activated carbon having the highest peak D within the range of 1.0 nm to 1.5 nm, in which the peak D is from 0.012 to 0.050 cm03-26-2009
20110228447HIGH PERFORMANCE ELECTRODES FOR EDLCS - An electric double layer capacitor composite electrode includes a current collector having opposing major surfaces, first and second conductive layers formed over respective ones of the major surfaces, and first and second carbon-based layers formed over the first and second conductive layers.09-22-2011
20090201629Multilayered Electrochemical Energy Storage Device and Method of Manufacture Thereof - An energy storage device comprising one or more cells, wherein each cell is defined by a pair of electrodes and a separator placed therebetween, wherein each cell is bounded by two current collectors, the geometric form and size of said separator being identical to the form and size of said current collectors, and wherein in each cell, one electrode is printed on one of said two current collectors and the other electrode is printed on one face of the separator, the two electrodes being electronically insulated by means of said separator, and wherein the peripheral region of the separator, which surrounds the electrode printed thereon, is sealed.08-13-2009
20110141661LARGE FORMAT ULTRACAPACITORS AND METHOD OF ASSEMBLY - A capacitor includes a plurality of electrode substrates, with each of the plurality of electrode substrates having a coated portion and an uncoated portion. The coated portion is coated with a coating material that includes a high surface area activated carbon material, a water soluble binder selected from the group consisting of: poly vinyl alcohol, poly acrylic acid, polymethacrylic acid, polyethylene oxide, polyacrylamide, poly-N-isopropylearylamide, poly-N,N-dimethylacrylamide, polyethyleneimine, polyoxyethylene, polyvinylsulfonic acid, poly (2-methoxyethoxyethoxyethylene), butadiene-acrylonitrile, and combinations thereof, and a water soluble thickener. A separator is inserted between adjacent substrates of the plurality of electrode substrates. The capacitor further includes an electrolyte. A method of manufacturing the capacitor is also provided.06-16-2011
20110141662METHOD OF PRODUCING A COIN-TYPE ELECTROCHEMICAL ELEMENT - A coin-type electrochemical element enables the external lead terminal portions to be accurately and reliably attached to a first lid portion and to a second lid portion of the coin-type electrochemical element, and a method of its production. A coin-type electric double layer capacitor includes a first lid portion and a second lid portion. External lead terminal portions, each having a nearly triangular shape, are separately connected to the outer surfaces of the lid portions. Upon providing the external lead terminal portions having the triangular shape, a welded portion is allowed to have an increased area enabling the coin-type electrochemical element of even a small size to be accurately and reliably welded and making it possible to provide the coin-type electrochemical element having excellent reliability.06-16-2011
20090086409SUPERCAPACITOR AND ELECTROCHEMICAL APPARATUS FOR WATER PURIFICATION - A supercapacitor which includes a cathode, an anode, a separator interposed between the cathode and the anode, and an electrolyte interposed between the cathode and the anode to allow current to flow. The cathode includes a catalyst having characteristics of a pseudo capacitor and a binder, and an electrochemical apparatus for water purification including the same.04-02-2009
20090128994Capacitor and manufacturing method thereof - A capacitor comprising an electrode made from an electroconductive material and activated carbon in combination with quaternary ammonium tosylate, and a method for manufacturing the same. The method enables the preparation of a high capacitance electrode without special facilities. The capacitor exhibits high specific capacitance and a high energy density.05-21-2009
20090213529Nanocellular high surface area material and methods for use and production thereof - Nanocellular high surface area materials of a carbon material with high surface area that is controllable and which exhibits high conductivity, controllable structure and a precisely controllable pore size and methods for production and use of these materials are provided.08-27-2009
20090103241Electric Double-Layer Capacitor - An activated carbon comprising a carbonized and activated compound represented by the formula (1):04-23-2009
20120106027Aqueous Electrolyte Solution for Electric Double-Layer Capacitor and Electric Double-Layer Capacitor Having the Same - A method for decreasing resistivity of an electrolyte for an electric double-layer capacitor is provided. In this method, an aqueous electrolyte solution comprising LiNO05-03-2012
20100002362DOUBLE LAYER CAPACITOR USING POLYMER ELECTROLYTE IN MULTILAYER CONSTRUCTION - A double layer capacitor (DLC) containing at least one double layer capacitor cell is provided. Each double layer capacitor cell contains two current collectors, each containing a metallized carrier film with upper and lower planar surfaces, two thin electrode layers in direct contact with the lower and upper planar surfaces of the metallized carrier films of the first and second current collectors, and a polymer electrolyte layer in direct contact with the first and the second thin electrode layers. The polymer electrolyte is applied as a liquid which impregnates and encases the electrode layers and then solidified to form the electrolyte layer. The resulting DLC is preferably no thicker than about 20 microns, and may be as thin as 5 microns. Methods of producing a DLC and for forming a cross-linked electrolyte are also provided.01-07-2010
20100259867ELECTRODE FOR ELECTRIC DOUBLE LAYER CAPACITOR AND METHOD FOR PRODUCING THE SAME - An electrical double-layer capacitor electrode with excellent capacitance characteristics is obtained together with a manufacturing method therefor.10-14-2010
20100014216Porous Coke and Method of Producing the Porous Coke - In a method of manufacturing a porous coke suitable as a charge-storing material in electrochemical capacitors, one manufactures or provides a non-calcined isotropic coke with spherical or onion-shaped morphology and low graphitizability as a starting material. The starting material is comingled with a caustic alkali to obtain a homogenous mixture. The homogenous mixture is heat treated at a temperature in a range between 650 and 950° C. to obtain the porous coke. The porous coke is washed and neutralized.01-21-2010
20100177462Platinum-Based Electrocatalysts Synthesized by Depositing Contiguous Adlayers on Carbon Nanostructures - High-surface-area carbon nanostructures coated with a smooth and conformal submonolayer-to-multilayer thin metal films and their method of manufacture are described. The preferred manufacturing process involves the initial oxidation of the carbon nanostructures followed by immersion in a solution with the desired pH to create negative surface dipoles. The nanostructures are subsequently immersed in an alkaline solution containing non-noble metal ions which adsorb at surface reaction sites. The metal ions are then reduced via chemical or electrical means and the nanostructures are exposed to a solution containing a salt of one or more noble metals which replace adsorbed non-noble surface metal atoms by galvanic displacement. Subsequent film growth may be performed via the initial quasi-underpotential deposition of a non-noble metal followed by immersion in a solution comprising a more noble metal. The resulting coated nanostructures may be used, for example, as high-performance electrodes in supercapacitors, batteries, or other electric storage devices.07-15-2010
20100214722PROCESS OF PRODUCING ACTIVATED CARBON FOR ELECTRIC DOUBLE LAYER CAPACITOR ELECTRODE - The present invention provides a process of producing an activated carbon for an electric double layer capacitor, which can produce easily and inexpensively an activated carbon free from fusing of carbon particles during activation and having a small diameter, a uniform particle diameter, and a relatively large specific surface area on a commercial scale. The process comprises the steps of calcining an easily graphitizable carbon material so that the reduction rates of the hydrogen/carbon atomic ratio (H/C) and the volatile components in the carbon material are 4 percent or more and 5 percent or more, respectively after calcination and activating the carbon material thereby producing an activated carbon for an electric double layer capacitor, having an average particle diameter of 0.5 to 7 μm and a BET specific surface area of 1500 to 3000 m08-26-2010
20130215554ELECTRIC DOUBLE LAYER CAPACITOR PACKAGE AND METHOD FOR MANUFACTURING THE SAME - An electric double layer capacitor and a method for manufacturing the same, in which one or more projections are formed on an inner bottom surface of a lower case, which is a concave container made of ceramic, in a the process of sequentially stacking a lower electrode, a separator, and an upper electrode in the lower case and covering the lower case with a sealing plate. It is possible to eliminate the process of injecting a bonding liquid and strongly connect the lower electrode and the upper electrode to the lower case and the sealing plate, respectively, by means of the projections, thus preventing the occurrence of a short circuit and reducing the equivalent series resistance.08-22-2013
20100149726Organosilicon Amine-Based Electrolytes - Disclosed are electrochemical double-layer capacitors having an electrode with a substrate and an electrolyte/quaternary ammonium salt capable of penetrating the substrate. Such salts have a moiety of the following formula:06-17-2010
20100238607ELECTRODE FOR SUPER-CAPACITOR, SUPER-CAPACITOR INCLUDING ELECTRODE, AND METHOD FOR PREPARING ELECTRODE - An electrode for a super-capacitor, a super-capacitor including the electrode, and a method of preparing the electrode in which the electrode includes a conductive substrate; metal nano structures formed on the conductive substrate; and a metal oxide coated on the metal nano structures. The electrode for the super-capacitor increases the capacitance of the super-capacitor.09-23-2010
20100226068ELECTRIC DOUBLE LAYER CAPACITOR AND METHOD FOR MANUFACTURING SAME - An electric double-layer capacitor includes a cylindrical case having a bottom, a side surface, and an opening, a capacitor element accommodated in the case, the capacitor element, a driving electrolyte accommodated in the case, and a terminal plate provided at the opening of the case. The capacitor element includes a first electrode and a second electrode extending in a direction opposite to the first electrode. The second electrode is joined to the bottom of the case. The first and second electrodes are tilted away from the center axis of the capacitor element. In this electric double-layer capacitor, electrodes of the capacitor element are connected to the case and sealing plate reliably.09-09-2010
20100238606Electric Double layer Capacitor - An electric double layer capacitor that contains at least one electrochemical cell is provided. The cell contains electrodes (e.g., two electrodes) that each contain a porous matrix of electrochemically-active particles (e.g., carbon). An aqueous-based electrolyte is disposed in contact with the porous matrix. In accordance with the present invention, the electrolyte is provided with an anionic polymer that serves as binding agent for the electrochemically active particles and thus reduces electrolyte loss, especially at higher temperatures. Because the polymer is anionic in nature, it is generally hydrophilic and thus can retain its binding properties in the presence of water. The anionic nature of the polymer also allows it to remain stable in the presence of a corrosive polyprotic acid, which is employed in the electrolyte to enhance charge density. Thus, as a result of the present invention, a capacitor may be formed that is capable of exhibiting good electrical performance (e.g., high capacitance and low ESR), even at high temperatures (e.g., 70° C. and above).09-23-2010
20110058306Chip-type electric double layer capacitor and package structure thereof - Disclosed is a package structure of a chip-type electric double layer capacitor which includes a lower package, which houses an electric double layer element and has a package terminal formed thereon to be electrically connected to the electric double layer element, and an upper package which is disposed on a top part of the lower package and seals the electric double layer element from the outside, wherein the package terminals are formed to be protruded from an internal bottom surface and an external bottom surface of the lower package, and the external bottom surface of the lower package has at least two pairs of protrusions formed thereon.03-10-2011
20100142121POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION ELECTRIC STORAGE DEVICE, AND LITHIUM ION ELECTRIC STORAGE DEVICE USING THE SAME - [Problem] The present invention aims to enhance a characteristic of a lithium ion electric storage device upon charging or discharging with high load, and increasing a working temperature range thereof.06-10-2010
20100220429Electric Double Layer Capacitor - Disclosed is an electric double layer capacitor comprising a polarizable electrode layer that contains an activated carbon, a conductive agent, and a binder, wherein an external specific surface area of the activated carbon (defined as a specific surface area calculated from a nitrogen absorption isotherm by a t-plot method by excluding micropores of pore diameter smaller than 20 angstroms), per unit volume of the polarizable electrode layer, lies within a range of 450 to 800 m09-02-2010
20100220430SUPERCAPACITOR ELECTRODE USING ION-EXCHANGER - It relates to a supercapacitor using an ion-exchanger, particularly to a supercapacitor which may optimize the capacity of current collection by employing an ion-exchanger instead of a binder in manufacturing of supercapacitor electrodes.09-02-2010
20080285207Supercapacitor Cover With Integrated Center - The invention relates to an electric energy storage component comprising a coil winding and at least one connector (11-20-2008
20090040689ELECTRODE AND CURRENT COLLECTOR FOR ELECTROCHEMICAL CAPACITOR HAVING DOUBLE ELECTRIC LAYER AND DOUBLE ELECTRIC LAYER ELECTROCHEMICAL CAPACITOR FORMED THEREWITH - An electrode and a DEL capacitor formed therewith. The electrode will typically be a polarizable electrode, and may be formed of an activated carbon material having a substantially zero ash percentage and a low percentage of transition metals. In constructing a DEL capacitor employing such an electrode, a non-polarizable electrode formed from a lead dioxide/lead sulfate compound is preferably also used. The DEL capacitor may utilize an acid-based electrolyte, such as an aqueous sulfuric acid electrolyte. Consequently, the present invention also includes a current collector that preferably comprises a base material formed from a lead or a lead compound and a protective coating material that is resistant to an acid-based electrolyte. Preferably, the protective coating material is formed from a polymer base and a conductive dope that may thereafter be applied to the current collector base material by a variety of methods.02-12-2009
20110235240HIERARCHICAL NANOWIRE COMPOSITES FOR ELECTROCHEMICAL ENERGY STORAGE - Provided is a new supercapacitor electrode material, comprising multiple interpenetrating networks of nanowires. More specifically, an interpenetrating network of metal oxide nanowires and an interpenetrating network of electrically conductive nanowires may form a composite film having a hierarchal porous structure. This hierarchically porous, interpenetrating network structure can provide the composite film with high capacitance, electrical conductivity and excellent rate performance. The present invention can be generalized towards other capacitor composites, opening a new avenue for a large spectrum of device applications.09-29-2011
20120033348MULTILAYER COMPOSITE GETTER - A multilayer composite getter, a method for its manufacturing and electrochemical devices for energy storage employing said multilayer composite getters are described.02-09-2012
20130128412ELECTRODE FOR ENERGY STORAGE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an electrode for an energy storage and a method for manufacturing the same and provides a useful effect of improving resistance characteristics of an electrode for an energy storage and strengthening adhesion by forming trenches of predetermined dimensions on a surface of a current collector, forming a conductive layer, which includes a conductive agent as much as possible, on the surface of the current collector, and forming a bonding layer including an active material, a conductive agent, and a binder and an electrode layer including an active material and a binder on the conductive layer.05-23-2013
20130128413HIGH ENERGY DENSITY STORAGE MATERIAL DEVICE USING NANOCHANNEL STRUCTURE - A capacitor includes a plurality of nanochannels formed in a dielectric material. A conductive film is formed over interior surfaces of the nanochannels, and a charge barrier is formed over the conductive film. An electrolytic solution is disposed in the nanochannels. An electrode is coupled to the electrolytic solution in the nanochannels to form the capacitor.05-23-2013
20110128673Chip-type electric double layer capacitor and method of manufacturing the same - There is provided a chip-type electric double layer capacitor including: an exterior case having a housing space provided therein and formed of insulation resin; first and second external terminals buried in the exterior case, each having a plurality of first surfaces exposed to the housing space and a second surface exposed to an outside of the exterior case; and an electric double layer cell electrically connected to the plurality of first surfaces of the first and second external terminals exposed to the housing space. The chip-type electric double layer capacitor may be reduced in size and weight and increased in capacity. Also, the chip-type electric double layer capacitor allows for surface mounting without any additional structure and has low equivalent series resistance (ESR).06-02-2011
20100302708BIPOLAR SUPERCAPACITORS AND METHODS FOR MAKING SAME - The present invention relates to a bipolar element for energy storage, which facilitates the manufacturing thereof with high working voltage. The bipolar element for energy storage includes two end electrodes with a dedicated means for connecting to a potential source; at least one intervening electrode disposed between the said end electrodes wherein the said intervening electrode has no connection to a potential source; and a separator disposed after each electrode for concentrically winding the said electrodes and separators into a jelly roll; or a separator disposed between every two electrode for stacking the said electrode and separator into a prismatic form; an organic electrolyte solution is added to the said separators for storing energy with a potential applied to the said end electrodes by the said power supply, wherein the bipolar element is partially sealed. The said assemblies of making high voltage supercapacitors in single units or modules can facilitate the usage of the devices as power managers in high power applications for automobiles, power tools, machineries and automatic system.12-02-2010
20110122542SUPERCAPACITOR COMPOSITIONS, DEVICES AND RELATED METHODS - Disclosed are supercapacitor materials comprising compositions having pores that are optimally sized to maximize capacitance. Also disclosed are related methods for fabricating such supercapacitors.05-26-2011
20100321864MULTIPLE-TRACK SUPERCAPACITOR - The invention relates to a supercapacitor that comprises at least two juxtaposed complexes (12-23-2010
20100321863ACTIVATED CARBON AND PROCESS FOR PRODUCING THE SAME - An activated carbon obtained by activating a carbide of a compound (1) with an alkali metal hydroxide, wherein the compound (1) is obtained, for example, by dehydration condensation of a resorcinol and an aldehyde using an acid catalyst.12-23-2010
20110002085Electrode for capacitor and electric double layer capacitor having the same - There are provided an electrode for a capacitor and an electric double layer capacitor having the same. The electrode for a capacitor may include: activated carbon; and 25 to 75 parts by weight of carbon aerogel per 100 parts by weight of the activated carbon. The electrode according to an aspect of the invention has excellent bonding strength between electrode materials and is free of defects such as aggregation and cracking. An electric double layer capacitor having this electrode has high capacitance and low internal resistance.01-06-2011
20110002084Chip-type electric double layer capacitor and method of manufacturing the same - A chip-type electric double layer capacitor includes: an exterior case including a housing space formed therein and formed of insulation resin; a first external terminal buried in the exterior case and including a first surface exposed to the housing space and a second surface exposed to the outside of the exterior case; a second external terminal buried in the exterior case and including a first surface exposed to the housing space and a second surface exposed to the outside of the exterior case; and an electric double layer cell disposed in the housing space so as to be electrically connected to the first surfaces of the first and second external terminals.01-06-2011
20100188800ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor has an element, a first terminal, a second terminal, a resin-made case, and a resin-made lid. A pair of electrodes are led out of the element. Each of the electrodes is connected to each of the first terminal and the second terminal. The element and an electrolyte are accommodated in the case having an opening top surface, and the lid is bonded to the top surface of the case. The joints of the first and second terminals are disposed at positions higher than the inner bottom of the case, and are exposed upward. The rims of the joints and intermediate conductive sections continuing from them are buried in the case, and the terminal sections continuing from the intermediate conductive sections are led from the side surface of the case to the outside.07-29-2010
20110110020Water-Based Electrolyte for Electric Double Layer Capacitor and Electric Double Layer Capacitor having the Same - Disclosed herein is a water-based electrolyte for an electric double layer capacitor. The water-based electrolyte includes a solution having a first salt and a second salt. The cation of the first salt may be Li05-12-2011
20120229954ELECTRICAL ENERGY STORAGE DEVICE AND MANUFACTURING METHOD THEREOF - Disclosed is an electrical energy storage device provided with a metallic casing to receive a bare cell and first and second terminals located outside of the metallic casing corresponding to each electrode of the bare cell, including a plate-like member provided on at least one of the first and second terminals, an inner terminal contacting the plate-like member to form the boundary between the inner terminal and the plate-like member, and a laser welded portion formed along the boundary between the inner terminal and the plate-like member to connect the plate-like member with the inner terminal.09-13-2012
20100002361POLARIZED ELECTRODE AND ELECTRIC DOUBLE-LAYER CAPACITOR - The present invention provides a polarized electrode 01-07-2010
20120033346Energy storage device - The present invention relates to an energy storage device. The energy storage device according to an exemplary embodiment of the present invention includes a case providing an internal space with a first space and a second space; an electrolyte solution filled in the internal space of the case; a positive electrode structure disposed on an interface between the first space and the second space and having a cathode active material layer including activated carbon; a first negative electrode disposed in the first space and having a first anode active material layer including graphite; and a second negative electrode disposed in the second space and having a second cathode active material layer including activated carbon.02-09-2012
20110043965Applying Optical Energy to Nanoparticles to Produce a Specified Nanostructure - The instant article of manufacture is made by applying optical energy to one or more layers of nanoparticulate materials under predetermined conditions to produce a nanostructure. The nanostructure has layers of optically fused nanoparticles including a predetermined pore density, a predetermined pore size, or both. The predetermined conditions for applying the optical energy may include a predetermined voltage, a predetermined duration, a predetermined power density, or combinations thereof.02-24-2011
20090034158Electric Double Layer Capacitor - An electric double layer capacitor containing a capacitor element comprised of electrodes including a pair of polarizable electrodes facing each other across a separator and an electrolytic solution, wherein at least one of the polarizable electrodes has a density of 0.40 to 0.59 g/cm02-05-2009
20110116211ELECTRIC DOUBLE-LAYER CAPACITOR - A high reliable electric double layer capacitor is provided by increasing a sealing ability and strength of given portions of collecting terminals. In an electric double layer capacitor including a capacitor proper 05-19-2011
20110085283Chip type electric double layer capacitor and method for manufacturing the same - The present invention provides a chip type electric double layer capacitor including: a lower case having an internal space of which an upper surface is opened and an external terminal of which portions exposed to a bottom of the internal space and the outside are connected to each other; an electric double layer capacitor cell disposed in the internal space of the lower case to be electrically connected to the portion of the external terminal, which is exposed to the bottom of the internal space; and an upper cap mounted on the lower case to cover the internal space, and a method for manufacturing the same.04-14-2011
20110128674SOLVENTS AND NOVEL ELECTROLYTIC COMPOSITIONS HAVING A LARGE RANGE OF STABILITY AND HIGH CONDUCTIVITY - The present invention is concerned with novel polar solvents and novel electrolytic compositions comprising such solvents, and having a high range of stability, as required for applications in the field of electrochemistry. The present solvents have a highly polar amide function, and preferably combine with a salt soluble in the solvent and having an anion with a delocalized charge, and at least one polymer, to form an electrolytic composition.06-02-2011
20110242732STORAGE BODY AND STORAGE DEVICE - A storage body comprises an electric energy storage unit and a case that houses the storage unit. The case comprises a frame-shaped outer shell body having two end surfaces that respectively include opening portions and a pair of laminate film pieces that are adhered to the respective end surfaces of the outer shell body so as to form a storage chamber inside the outer shell body. Each laminate film piece comprises an adhesion portion that is adhered to the outer shell body and a film portion that faces the storage chamber. The laminate film pieces, which are not formed by press-molding, are adhered to the outer shell body, and therefore structurally weak sites are not formed on the laminate film pieces.10-06-2011
20110085284Elastomeric Piezoelectric Ultracapacitor - An elastomeric piezoelectric ultracapacitor embodiment is also disclosed. A dielectric elastomer is a polymer that may be configured to operate in a “generator mode.” In generator mode the dielectric elastomer operates like a variable capacitor, and amplifies the energy of charge placed on a pair of compliant electrodes, formed on opposite sides of the elastomer, when the elastomer is in a compressed state. An elastomeric piezoelectric ultracapacitor employs generator mode techniques to further increase the power generation capabilities of an piezoelectric ultracapacitor.04-14-2011
20110242730SOLID STATE ENERGY STORAGE DEVICE AND METHOD - A solid state energy storage device has two electrodes, a membrane separator and a solid electrolyte having a substantially solid solvent, a salt and a mediator. The energy storage device stores electric charge by both Faradaic and non-Faradaic systems. The energy storage device may include activated carbon mixed with the electrolyte and sonicated to provide connection between the activated carbon and the mediator. The energy storage device is hot pressed to increase conductivity. The two electrodes may be asymmetric in amount of reduced and oxidized species of mediator.10-06-2011
20090251849Energy Storage Device Having Novel Energy Storage Means - Disclosed is an energy storage device having high energy density and excellent power density. For example, electric double layer capacitors, redox capacitors, lithium ion electrolyte type capacitors and devices applying any of them are greatly improved in the energy density without deteriorating their advantages such as high power density, high charge/discharge efficiency and long life. Specifically disclosed is an energy storage device containing a positive electrode, a negative electrode and an electrolyte solution, which device is characterized in that a compound capable of performing a doping/dedoping reaction is present in the electrolyte solution.10-08-2009
20100008021Porous Carbon Electrode With Conductive Polymer Coating - An extremely high-performance polyaniline electrode was prepared by potentiostatic deposition of aniline on hierarchically porous carbon monolith (HPCM), which was carbonized from mesophase pitch. A capacitance value of 2200 F g01-14-2010
20110176255METHOD FOR MANUFACTURING ELECTRODE FOR ELECTROCHEMICAL ELEMENT - Disclosed is a method for manufacturing an electrode for an electrochemical element, that is capable of forming an electrode active material layer on a current collector, particularly a perforated current collector having through-holes extended from the obverse surface to the reverse surface thereof, such as a punching metal or an expanded metal, simply, evenly and with good adhesion. The method is characterized by comprising the steps of (1) forming an electrode active material layer on a surface of a base material by using an electrode composition containing an electrode active material, an electroconductive material, and a binder, (2) laminating a current collector on the electrode active material layer formed on the surface of the base material, followed by hot pressing to bond the electrode active material layer and the current collector to each other, and (3) separating the base material from the electrode active material layer.07-21-2011
20110249373ACTIVE ELECTROLYTE ELECTROCHEMICAL CAPACITOR - The disclosure relates to electrochemical capacitors. In particular the disclosure relates to asymmetric electrochemical capacitors and methods to improve service life and energy density.10-13-2011
20110069426Electric double layer capacitor and method of manufacturing the same - An electric double layer capacitor (EDLC) includes an electric double layer cell and first and second external electrodes. The electric double layer cell includes a separator and at least one first polarizable electrode and at least one second polarizable electrode. The first and second external electrodes are formed at first and second side surfaces of the electric double layer cell facing each other, respectively. The first polarizable electrode includes a first current collection layer and a first active material layer formed on either surface of the first current collection layer facing the separator and the second polarizable electrode includes a second current collection layer and a second active material layer formed on either surface of the second current collection layer facing the separator.03-24-2011
20110149473ENERGY STORAGE IN EDLCS BY UTILIZING A DIELECTRIC LAYER - A composition comprising an electrode or an electrical double-layer capacitor with dielectric material is disclosed, along with methods of making the composition. The present invention improves upon state-of-the-art electrodes and capacitors by coating a material of high dielectric constant onto the surface of the electrode to produce improved electrical properties. The composition is particularly useful for design of novel electrical double-layer capacitors.06-23-2011
20110038100Porous Carbon Oxide Nanocomposite Electrodes for High Energy Density Supercapacitors - A high energy density supercapacitor is provided by using nanocomposite electrodes having an electrically conductive carbon network having a surface area greater than 2,000 m02-17-2011
20100296226ELECTRIC DOUBLE LAYER CAPACITOR - Disclosed is an electric double layer capacitor having a positive polarizable electrode and a negative polarizable electrode, each of the positive and negative polarizable electrodes having a polarizable electrode layer, the positive polarizable electrode layer containing carbon fibers P and activated carbon P, the negative polarizable electrode layer containing carbon fibers N and activated carbon N, wherein at least one of the carbon fibers P and carbon fibers N has at least one peak in the range of 11-25-2010
20100097741ULTRACAPACITOR ELECTRODE WITH CONTROLLED SULFUR CONTENT - Particles of active electrode material are made by blending mixing a mixture of activated carbon and binder. In selected implementations, sulfur level in the activated carbon is relatively low and the binder is inert. For example, sulfur content of the activated carbon and the resultant mixture is below 300 ppm and in other implementations, below 50 ppm. The electrode material may be attached to a current collector to obtain an electrode for use in various electrical devices, including a double layer capacitor. The electrode decreases current leakage of the capacitor.04-22-2010
20100265633POLARIZABLE ELECTRODE FOR ELECTRIC DOUBLE LAYER CAPACITOR AND ELECTRIC DOUBLE LAYER CAPACITOR USING THE SAME - The present invention provides a polarizable electrode for an electrical double layer capacitor which has good high-temperature storage characteristics and can prevent a decrease in electrostatic capacity and increase in internal resistance, and also provides an electrical double layer capacitor using the electrode. A polarizable electrode is formed by mixing Ketjen black, active charcoal and a polytetrafluoroethylene (PTFE) aqueous solution. An etched aluminum foil is used for the collector, and this etched aluminum foil is dipped in a phosphoric acid aqueous solution or an ammonium phosphate or other phosphate aqueous solution to thereby retain 15 to 115 mg/m10-21-2010
20080247118Nanoscale manganese oxide on ultraporous carbon nanoarchitecture - A composite comprising a porous carbon structure comprising a surface and pores and a coating on the surface comprising MnO10-09-2008
20080304206Raw Oil Composition for Carbon Material for Electric Double Layer Capacitor Electrode - The present invention provides a raw oil composition for manufacturing a carbon material for electric double layer capacitor electrodes, characterized in that the raw oil composition comprises 25 wt % or more of a saturated component and 16 wt % or less of an asphaltene component among the saturated component, an aromatic component, a resin component, and the asphaltene component obtained by developing of the raw oil composition by thin-layer chromatography; the raw oil composition has an average molecular weight of 960 or less; and the raw oil composition has an aromatic-carbon-fraction (fa) of 0.22 to 0.72. Use of the raw oil composition provides a carbon material for electric double layer capacitor electrodes that can exhibit high capacitance with high reproducibility without manufacturing synthetic pitch.12-11-2008
20090185328Cellular Honeycomb Ultracapacitors and Hybrid Capacitors With Separator-Supported Current Collectors - An ultracapacitor or hybrid capacitor includes an electrically non-conductive rigid or semi-rigid porous honeycomb separator structure having cells extending along a common direction and supporting current collector structure(s) thereon. The current collector structure may be porous and extend continuously on all inner surfaces of a cell of the honeycomb structure, or may extend along the common direction on separate portions of the inner surfaces of a cell. The honeycomb structure desirably formed of a material that is stable at temperatures of 300° or more, such that high temperature processing can be used to help ensure high purity of the final product. The material may desirably be an oxide or non-oxide ceramic, such as cordierite, silicon nitride, or aluminum titanate. The cells desirably have an average density per unit area within in a plane perpendicular to the common direction of more than 15.5 per square centimeter.07-23-2009
20080291604Electrolytic Capacitor - An electrolytic capacitor (A11-27-2008
20090021891ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor with shorter electrodes that can secure insulation within a container is provided. The electric double layer capacitor 01-22-2009
20090021890Cellular Honeycomb Ultracapacitors and Hybrid Capacitors and Methods for Producing - An ultracapacitor or hybrid capacitor includes an electrically non-conductive rigid or semi-rigid porous honeycomb structure (01-22-2009
20110255214CHARGE STORAGE DEVICE ARCHITECTURE FOR INCREASING ENERGY AND POWER DENSITY - The present invention relates generally to charge storage devices with at least one electrode having combined double layer supercapacitor, electrochemical supercapacitor and/or battery functionalities. In some embodiments, the electrode, may be composed of an ECS material, a highly-structured DLS material and a less-structured DLS material.10-20-2011
20110255213Electric Double Layer Capacitor and Method of Making - An electric double layer capacitor includes a container including electric insulating material for housing the capacitor. At least two electrodes including granular particulate store a charge. An aqueous electrolyte, having a generally neutral pH, floods the at least two electrodes. A separator material including a porous electrical insulating and ionic conducting material separates the at least two electrodes. At least two collectors including graphite each in contact with an electrode conduct current. An elastic compression material compressing the at least two electrodes flooded by the aqueous electrolyte maintains a firm contact of the at least two collectors with material in flooded electrodes. End caps including a high conductivity material joined to the at least two collectors make external electrical connections.10-20-2011
20090027827HIGH VOLTAGE ELECTROLYTES - A method for reducing pressure build-up in an electrochemical cell comprising: providing an anhydrous nonaqueous electrolyte solution comprising at least one quaternary ammonium salt and at least one anhydrous nonaqueous solvent; contacting said electrolyte solution with at least one acid scavenger; and loading said nonaqueous electrolyte solution into said electrochemical cell. Also, an electric double-layer capacitor (supercapacitor) comprising a free acid scavenger.01-29-2009
20080204973ULTRACAPACITOR ELECTRODE WITH CONTROLLED IRON CONTENT - Particles of active electrode material are made by blending or mixing a mixture of activated carbon, optional conductive carbon, and binder. In selected implementations, iron level in the activated carbon is relatively low, a small amount of conductive carbon with low impurity levels and high conductivity is used, and the binder is inert. For one example, iron content of the activated carbon and the resultant mixture is below 20 ppm. The electrode material may be attached to a current collector to obtain an electrode for use in various electrical devices, including a double layer capacitor. The electrode decreases current leakage of the capacitor.08-28-2008
20110164347Package for an Electrical Device - A generally prismatic package (07-07-2011
20120063057Methods and apparatus related to a purge valve for a capacitor - In some embodiments, an apparatus includes a housing and a purge valve. The housing defines a cavity and a lumen extending from a volume of the cavity to a volume outside the cavity. The purge valve is disposed within the lumen and includes an occlusion member. A portion of the occlusion member has a width substantially equal to a width of an end portion of the lumen such that the portion of the occlusion member is disposed within the end portion of the lumen when the purge valve is in a first configuration. The portion of the occlusion member being disposed outside the end portion of the lumen when the purge valve is in a second configuration.03-15-2012
20100284127ELECTRIC DOUBLE-LAYER CAPACITOR AND METHOD OF MANUFACTURING ELECTRIC DOUBLE-LAYER CAPACITOR - The electric double-layer capacitor has a portion where a thickness of a sealing member from a surface of an outer package to a surface of a lead in a laminating direction of electrode bodies on one side of the lead differs from that on the other side of the lead such that two leads connected to each electrode body are arranged within the same plane perpendicular to the laminating direction of the electrode bodies. The electrode bodies are laminated in the outer package such as to yield portions where only one of the planar leads of a first electrode body overlaps one of the planar leads of a second electrode body in the laminating direction of the electrode bodies in the opening part of the outer package.11-11-2010
20120147525ELECTRIC DOUBLE LAYER CAPACITOR - Disclosed herein is an electric double layer capacitor including electrode assemblies configured of current collectors having a positive electrode or a negative electrode formed on surfaces thereof and a separator, the electric double layer capacitor including a housing having both opposite sides opened so that the electrode assemblies are received therein and external terminals each provided on both opened sides of the housing and connected to the current collectors to reduce internal equivalent series resistance (ESR), thereby generating high output characteristics.06-14-2012
20110255212Carbon Nanotube Nanocomposites, Methods of Making Carbon Nanotube Nanocomposites, and Devices Comprising the Nanocomposites - The invention describes nanocomposites containing carbon nanotubes (CNTs), methods of making the nanocomposites and devices using the nanocomposite materials. Combining CNTs with capacitor materials such as VN provides composite materials having unique supercapacitor properties.10-20-2011
20110134585MESOPOROUS CARBON MATERIAL, FABRICATION METHOD THEREOF AND SUPERCAPACITOR - A mesoporous carbon material, a fabrication method thereof and a supercapacitor containing the mesoporous carbon material are provided. The mesoporous carbon material includes a plurality of carbon nanotubes (CNTs) and/or metal particles and/or metal oxide particles, and a carbon matrix. The mesoporous carbon material has a plurality of mesopores formed by the carbon matrix and the carbon nanotubes and/or the metal particles and/or the metal oxide particles. The plurality of carbon nanotubes, and/or the metal particles and/or the metal oxide particles are formed substantially adjacent to the plurality of mesopores.06-09-2011
20110096465CARBON NANOTUBE COMPOSITE, METHOD FOR MAKING THE SAME, AND ELECTROCHEMICAL CAPACITOR USING THE SAME - An electrochemical capacitor includes a first electrode, a second electrode, a membrane, and an electrolyte. The first electrode includes a carbon nanotube composite. The carbon nanotube composite includes a free-standing carbon nanotube structure, and a plurality of nano grains located on the carbon nanotube structure. The membrane is located between the first electrode and the second electrode, to separate the first electrode from the second electrode. The first electrode, the second electrode, and the membrane are disposed in the electrolyte.04-28-2011
20100067173ENERGY STORAGE APPARATUS AND ARTICLE OF MANUFACTURE - An energy storage apparatus and article of manufacture is disclosed. In one embodiment, the energy storage apparatus comprises a jelly roll, having a first and second sheet and a first and second separator member, and at least one terminal element. In another embodiment, an article of manufacture comprising forming a cylindrical housing and stamping a longitudinal indentation on an exterior surface of the cylindrical housing is disclosed. In one alternate embodiment, the longitudinal indentation is adapted to slowly fracture under pressure exerted on an interior surface of the cylindrical housing, thereby preventing catastrophic failure, such as for example an explosion.03-18-2010
20100195268HYBRID SUPERCAPACITOR USING TRANSITION METAL OXIDE AEROGEL - It discloses a hybrid supercapacitor including a carbon aerogel cathode and a transition metal oxide aerogel anode which is able to increase energy density and power density with increase of overall cell potential and at the same time lower internal resistance of the electrode and equivalent series resistance by using a monolithic electrode with no use of current collector and binder.08-05-2010
20100195270LAMINATE, SEPARATOR FOR CAPACITOR, AND CAPACITOR - Provided are a laminate excellent in heat resistance, and a separator for capacitors comprising the laminate.08-05-2010
20090316335Method for the Electrolytic Production of Self-Supporting Conductive Nanocomposite Elements - The invention relates to a self-supporting composite element and to a method of producing same. The composite element comprises a substrate of electronic conductive material which is covered with metal nanowires that are essentially oriented along a plane that is perpendicular to the substrate. The element is produced in a cell comprising a cathode which is formed by the substrate to be covered, one or more anodes and an electrolyte which is formed by a solution of a precursor of the metal material and optionally containing a conductive ionic salt, a flat porous membrane which is placed between the cathode and each of the anodes and a spacer element between each membrane and the anode adjacent thereto, the different constituent parts of the cell being maintained in contact.12-24-2009
20110261501Electrochemical Capacitor Having Lithium Containing Electrolyte - A device having a first electrode, a second electrode, a separator positioned between the first electrode and the second electrode, and an electrolyte incorporated throughout the first electrode, the second electrode, and the separator. The electrolyte includes one or more lithium salts and one or more solvents. The first electrode and second electrodes comprise a majority of activated carbon having a microporous pore size distribution.10-27-2011
20110188171Electric double layer capacitor and method of manufacturing the same - There is provided an electric double layer capacitor and a method of manufacturing the same. The electric double layer capacitor includes first and second electrodes facing each other; and an ion-permeable separator interleaved between the first and second electrodes, wherein at least one of the first and second electrodes includes a metallic fiber being compressed to have pores therein and an electrode material filling the pores. The electric double layer capacitor has low equivalent series resistance (ESR) and high output density. Also, since the electrodes are formed to be thin, the electric double layer capacitor can be miniaturized.08-04-2011
20100020471Electrode Device - Electrodes, electrode devices, and methods of producing electrodes and electrode devices are disclosed. An exemplary method may comprise positioning a current collector adjacent to a first electrode and, optionally, a second electrode. The method may also comprise coupling the first electrode and optional second electrode. The current collector comprises a plurality of conductive protrusions extending into the first electrode and optional second electrode to reduce the ESR of the electrode device. The first electrode and optional second electrode may, for example, comprise electrode films. The method may be used to produce electrodes and electrode devices including, but not limited to, double-layer capacitor devices, batteries, and other energy storage devices.01-28-2010
20110216477ELECTRICAL DOUBLE LAYER CAPACITOR - The present invention provides an electric double layer capacitor that has a high withstand voltage, is more resistant to degradation, and also has good cycle characteristics. The present invention relates to an electrolytic solution for an electric double layer capacitor, comprising: (I) a solvent for dissolving an electrolyte salt; and (II) an electrolyte salt, wherein the solvent (I) for dissolving an electrolyte salt includes propylene carbonate and at least one selected from the group consisting of a fluorine-containing chain carbonate and a fluorine-containing chain ether. The present invention also relates to an electric double layer capacitor comprising the electrolytic solution.09-08-2011
20110216476ELECTRICAL DEVICES CONTAINING CARBON NANOTUBE-INFUSED FIBERS AND METHODS FOR PRODUCTION THEREOF - Electrical devices containing continuous fibers that are infused with carbon nanotubes are described herein. The electrical devices contain at least a first electrode layer and a second electrode layer, where the first and second electrode layers each contain a plurality of continuous fibers that are infused with carbon nanotubes. In some embodiments, the electrical devices can be supercapacitors, further containing at least a base plate, a layer of separator material disposed between the first and second electrode layers, and an electrolyte in contact with the first and second electrode layers. The first and second electrode layers can be formed by conformal winding of the continuous fibers. The electrical devices can contain any number of additional electrode layers, each being separated from one another by a layer of separator material. Methods for producing the electrical devices are also described herein.09-08-2011
20110026189Single-wall Carbon Nanotube Supercapacitor - A supercapacitor comprising a cathode, an anode, a first single-walled carbon nanotube (SWNT) film electrode adjacent the cathode, a second SWNT film electrode adjacent the anode, and separator disposed between the first and second electrodes. The SWNT film electrodes may be manufactured by a non-filtration process comprising depositing the SWNT film on a foil via CVD; separating the SWNT film from the foil; heating the SWNT film; treating the SWNT film with an acid solution; washing the SWNT film; and excising the electrodes from the SWNT film.02-03-2011
20100208413INTRINSICALLY CONDUCTIVE POLYMERS - A method of doping an intrinsically conductive polymer film is provided. The method includes contacting the film with a first acid dopant to form a primary doped intrinsically conductive polymer film; cleaning the primary doped intrinsically conductive polymer film by contacting the primary doped intrinsically conductive polymer film with a vapor; dipping the vapor-cleaned primary doped intrinsically conductive polymer film into a solution including at least a second acid dopant and an organic solvent to form a secondary doped intrinsically conductive polymer film; and annealing the secondary doped intrinsically conductive polymer film to produce a tertiary doped intrinsically conductive polymer film.08-19-2010
20110304951ULTRACAPACITOR AND METHOD OF MANUFACTURING THE SAME - A method for producing an ultracapacitor comprises the steps of: providing a negative porous electrode in contact with a negative conducting plate; providing a positive porous electrode in contact with a positive conducting plate; providing an ultracapacitor separator being a microporous material that separates the negative porous electrode from the positive porous electrode; providing an electrolytic solution that impregnates the negative porous electrode, the positive porous electrode, and the ultracapacitor separator; and curing the ultracapacitor at a temperature of at least 200° C.12-15-2011
20110304950ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor includes a pair of collectors, a separator, a conductive coating film, a polarizable electrode, and an electrolyte solution. The separator is arranged between the collectors. The conductive coating film covers a surface of at least one of the collectors facing the separator. The polarizable electrode is formed as to be in contact with at least a surface of the conductive coating film facing the separator. Preferably, electrolyte solution has a fluorine-containing organic solvent, and is impregnated into the polarizable electrode. Preferably, the capacitor enables an operating voltage of 3.5 V or higher.12-15-2011
20110038101DEVICE TO PREVENT OVERPRESSURE IN A CAPACITOR OR ULTRACAPACITOR - The present invention relates to a device to prevent overpressure in a supercapacitor. In a supercapacitor comprising a closed chamber fitted with means for exchanging a gas with the external surroundings and in which there are positioned two electrodes with a high specific surface area, separated by a separator, the separator and the electrodes being impregnated with an electrolyte, the means for exchanging a gas comprise a metallic membrane that is permeable to hydrogen and its isotopes and impermeable to gaseous species which have an effective cross section of 0.3 nm or higher, at a temperature of between −50° C. and 100° C.02-17-2011
20100259866ENERGY STORAGE DEVICE - An energy storage device includes a supercapacitor having first and second electrodes, each including a composite of a mat of conducting fibers bound by an electrolytic resin. A method of fabricating a super capacitor includes constructing a mat of conducting fibers, binding the mat with an electrolytic resin, and forming a laminate of the electrodes spaced by an insulating spacer.10-14-2010
20100226069Electrode for Electric Double Layer Capacitor and Electric Double Layer Capacitor - The invention is directed to the provision of an electric double layer capacitor electrode that can fully utilize the electrode performance of a graphite-like carbon material by preventing degradation of the cycle characteristics. More specifically, the invention provides an electric double layer capacitor electrode constructed by laminating a polarizable electrode layer containing a carbon material having graphite-like microcrystalline carbon to at least one side of a sheet-like current collector, wherein the carbon material has a BET specific surface area of 800 m09-09-2010
20110063777METAL OXIDE ELECTRODE MATERIAL, AND ELECTROCHEMICAL CAPACITOR USING THE SAME AND MANUFACTURING PROCESS FOR PRODUCING THE SAME - The present invention relates to a metal oxide electrode material, an electrochemical capacitor using the same, and a method for producing the same. More particularly, the present invention relates to a metal oxide electrode material substituting a sublattice location of metal for one or more kinds of different metals, an electrochemical capacitor using the same, and a method for producing the same in metal oxides constituting an electrochemical capacitor electrode.03-17-2011
20110317332SUPER-CAPACITOR ELECTRODE - A super-capacitor electrode is provided, which comprises a metal foil as a current collector, an active material, a conductive agent, and an organic adhesive agent. The metal foil is an uncorroded smooth metal foil. The super-capacitor electrode further comprises a silane coupling agent for binding the organic adhesive agent and the uncorroded smooth metal foil, so that the active material is adhered to the uncorroded smooth metal foil. In comparison with a case that only organic adhesive agent is used in a super-capacitor electrode, since the silane coupling agent is used in the super-capacitor electrode of the present invention to bind the organic adhesive agent and the uncorroded smooth metal foil, the binding strength of the active material on the uncorroded smooth metal foil is improved without increasing the amount of the agent used for adhering, so that the super-capacitor electrode of the present invention attains perfect overall performance.12-29-2011
20120300367NEGATIVE ELECTRODE FOR ASYMMETRIC SUPERCAPACITOR HAVING A POSITIVE ELECTRODE BASED ON NICKEL HYDROXIDE AND AN ALKALINE ELECTROLYTE AND METHOD FOR MAKING SAME - The object of the invention is an electrode comprising a continuous current collector (11-29-2012
20120300366METHOD FOR PRE-DOPING ANODE AND LITHIUM ION CAPACITOR STORAGE DEVICE INCLUDING THE SAME - Disclosed herein are a method for pre-doping an anode and a lithium ion capacitor storage device including the same. The method of the present invention includes: disposing lithium metal films and anodes alternately; and charging the lithium metal films and the anodes to directly pre-dope lithium metal contained in the lithium metal films onto the anodes. The lithium ion capacitor storage device is manufactured by the method. According to the present invention, the lithium ion capacitor storage device including the anode can provide a high-capacitance capacitor capable of operating even at a high voltage range of up to 3.8V to 2.0V, and ensure high reliability even in a high-temperature (60° C.) cycle.11-29-2012
20120300365CATHODE ACTIVE MATERIAL, METHOD FOR PREPARING THE SAME, AND LITHIUM ION CAPACITOR INCLUDING THE SAME - A cathode active material, a method for preparing the same, and a lithium ion capacitor including the same. The cathode active material has a surface with a porous structure and an inside with an amorphous structure where crystalline phases are not present. The cathode active material according to the present invention has the inside having an amorphous structure where crystal lattices are not contained in a short range order, thereby preventing the lithium ions from being intercalated into the inside of the cathode active material while the anode is pre-doped. The lithium ion capacitor containing the cathode active material having the above structure can maintain a potential difference between the cathode and the anode constantly, thereby obtaining high withstand voltage, high energy density, and high input and output characteristics. Furthermore, a large-capacitance lithium ion capacitor device having excellent reliability of high-speed charging and discharging cycle can be manufactured.11-29-2012
20120300364HIERARCHIALLY POROUS CARBON PARTICLES FOR ELECTROCHEMICAL APPLICATIONS - Hierarchically porous graphitic carbon particles are prepared by an aerosol process using a aqueous solution of a carbon precursor compound in which different sized particles or clusters of silicon oxide species are dispersed. The aerosol is heated to evaporate the solvent. The solid residue is carbonized and non-carbon species removed to obtain small porous particles of graphitic carbon. The interconnected, different size pores in the small carbon particles make them very useful as electrode materials in electrochemical devices, such as supercapcitors, in which efficient ion transport through the pores or the particles is required.11-29-2012
20110317330ELECTROLYTE SOLUTION COMPOSITION AND ENERGY STORAGE DEVICE WITH THE SAME - Disclosed is an electrolyte solution composition including: a lithium salt including lithium ions; a non-lithium salt for reducing an amount of the lithium salt to be hydrolyzed; and a solvent for dissolving the lithium salt and the non-lithium salt.12-29-2011
20110317331ELECTROCHEMICAL CAPACITOR - The present invention provides an electrochemical capacitor, which includes: a cell electrode unit which includes cathodes, anodes, and separators interposed between the cathodes and the anodes which are alternately stacked in multiple layers; cathode terminals which are extended to one side of each of the cathodes and are stacked one above another; anode terminals which are extended to one side of each of the anodes and are stacked one above another with a separation space from the cathode terminals; a housing for receiving the cell electrode unit, the cathode terminals, and the anode terminals; and an output terminal unit which is insert-molded to penetrate from the inside to the outside of the housing, electrically connected to at least one of each of the stacked cathode and anode terminals, and immobilizes the cell electrode unit into the housing.12-29-2011
20110043966CONDUCTIVE ADHESIVE AND ELECTRODE FOR ELECTRIC DOUBLE LAYER CAPACITOR AND ELECTRIC DOUBLE LAYER CAPACITOR EMPLOYING IT - There is provided a conductive adhesive with increased thermoresistant adhesion, for bonding between polarizing electrode layers and sheet-like collectors.02-24-2011
20090073637POLARIZABLE ELECTRODE, CAPACITOR USING THE SAME, AND METHOD FOR MANUFACTURING POLARIZABLE ELECTRODE - A polarizable electrode includes a collector and a polarizable electrode layer having a thickness of 5 μm or more to 130 μm or less on the surface of the collector. The polarizable electrode layer includes a first binder composed of at least one of an ammonium salt of carboxymethyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, methylcellulose, and a hydroxylpropyl cellulose resin, and a second binder composed of at least one of a latex, a fluoride-based polymer, a urethane resin, and an olefin-based resin. The content of the first binder is 5% by weight or less with respect to the total weight of the solid part, and the content of the second binder is 1% by weight or more and 5% by weight or less.03-19-2009
20120044614ELECTROLYTIC SOLUTION FOR ELECTRIC DOUBLE LAYER CAPACITOR, ELECTRIC DOUBLE LAYER CAPACITOR USING THE SAME, AND MANUFACTURING METHOD THEREFOR - Provided are an electrolytic solution for an electric double layer capacitor capable of providing an electric double layer capacitor having stable quality, an electric double layer capacitor using the electrolytic solution, and a manufacturing method for the electric double layer capacitor. The electrolytic solution includes a supporting electrolyte, sulfolane, and a linear sulfone. It is preferred that the electrolytic solution further include an organic fluorine compound. Further, it is preferred that the supporting electrolyte contain 5-azoniaspiro[4.4]nonane tetrafluoroborate, and the content of 5-azoniaspiro[4.4]nonane tetrafluoroborate be 1.5 to 3.6 mol/dm02-23-2012
20120044613Electrolyte for lithium ion capacitor and lithium ion capacitor including the same - There are provided an electrolyte for a lithium ion capacitor, and a lithium ion capacitor including the same. The electrolyte includes a lithium salt having divalent anions. The lithium ion capacitor including the electrolyte may have high capacitance and stability, even at high temperatures.02-23-2012
20120063060ELECTRIC DOUBLE LAYER CAPACITOR - A collector for an electric double layer capacitor including a conductive sheet, and a film adhered on surface of the conductive sheet and including carbon fine particle and polysaccharide and/or cross-linked polysaccharide. An electrode for an electric double layer capacitor including a collector having a conductive sheet and a film adhered on surface of the conductive sheet, and a film including activated carbon and adhered on surface of the film of the collector. The film of the collector includes carbon fine particle and polysaccharide and/or cross-linked polysaccharide. An electric double layer capacitor including an electrode, a separator, and an electrolyte. The electrode includes a collector having a conductive sheet and a film adhered on surface of the conductive sheet, and a film including activated carbon and adhered on surface of the film of the collector. The film of the collector includes carbon fine particle and polysaccharide and/or cross-linked polysaccharide.03-15-2012
20120002349POWER STORAGE DEVICE, LITHIUM-ION SECONDARY BATTERY, ELECTRIC DOUBLE LAYER CAPACITOR AND LITHIUM-ION CAPACITOR - One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R01-05-2012
20120002348ELECTRIC DOUBLE LAYER CAPACITOR, LITHIUM ION CAPACITOR AND MANUFACTURING METHOD THEREOF - A thin energy storage device having high capacity is obtained. An energy storage device having high output is obtained. A current collector and an active material layer are formed in the same manufacturing step. The number of manufacturing steps of an energy storage device is reduced. The manufacturing cost of an energy storage device is suppressed. One embodiment of the present invention relates to an electric double layer capacitor which includes a pair of electrodes including a porous metal material, and an electrolyte provided between the pair of electrodes; or a lithium ion capacitor which includes a positive electrode that is a porous metal body functioning as a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte provided between the positive electrode and the negative electrode.01-05-2012
20090316334Electro-chemical element electrode - An electrochemical element electrode for obtaining electrochemical elements having both low internal resistance and high capacitance, and a secondary battery and an electric double layer capacitor using the electrode are provided.12-24-2009
20090168301Functionalized Nanotube Material for Supercapacitor Electrodes - The present teachings are directed towards supercapacitors including an electrode composed of a functionalized carbon nanotube-containing material, and also an organic electrolyte solution. The organic electrolyte solution can contain a non-aqueous solvent and an ionic salt, examples of non-aqueous solvent include propylene carbonate, ethylene carbonate, sulfolane and acetonitrile. The functional groups present on the carbon nanotubes can include hydroxyl groups, carboxyl groups, alkoxyl groups and mixtures thereof.07-02-2009
20090034159Method of Monitoring and/or Controlling or Automatically Controlling the Voltage of at Least One Group of Cells in a Compound of Cells of an Energy Storage Device - Thus, according to the invention, for monitoring and/or controlling or automatically controlling the voltage of at least one group of cells in a cell compound of an energy storage device, particularly an energy storage device in an onboard power supply system of a motor vehicle, a data communication is carried out between a central logic and a cell group logic by way of the rail line connecting the latter, in which case voltage levels exist between an idle level situated at or above a maximal voltage level, up to which the cell group logic exchanges energy with the rail line for charging or discharging the cell group, and a data level situated above the idle level.02-05-2009
20090290288Electrical energy storage devices with separator between electrodes and methods for fabricating the devices - Films of active electrode material, such as films made from carbon and fibrillized polymer, are attached to a porous separator. Outer surfaces of the films (i.e., surfaces opposite those adjoining the separator) are then covered with current collectors. The 5 resulting stack is usable in fabrication of electrical energy storage devices. The stack can be shaped as needed, connected to terminals, and immersed in an electrolytic solution to provide a double layer capacitor.11-26-2009
20120057274Lithium ion capacitor - Provided is a lithium ion capacitor. The lithium ion capacitor includes an electrode cell provided with cathodes and anodes alternately disposed with the separators interposed therebetween, a first electrolyte in a phase of gel arranged on at least one surface of the anode and a second electrolyte in a phase of liquid immerged into the electrode cell.03-08-2012
20120057273NANOSTRUCTURE ELECTRODE FOR PSEUDOCAPACITIVE ENERGY STORAGE - A nanoporous templating substrate, which is an anodically oxidized alumina (AAO) substrate, is employed to form a pseudocapacitor having high stored energy density. A pseudocapacitive material is deposited conformally along the sidewalls of the AAO substrate by atomic layer deposition, chemical vapor deposition), and/or electrochemical deposition employing a nucleation layer. The thickness of the pseudocapacitive material on the walls can be precisely controlled in the deposition process. The AAO is etched to form an array of nanotubes of the PC material that are cylindrical and structurally robust with cavities therein. Because the AAO substrate that acts as scaffolding is removed, only the active PC material is left behind, thereby maximizing the energy per mass. In addition, nanotubes may be de-anchored from a substrate so that free-standing nanotubes having randomized orientations may be deposited on a conductive substrate to form an electrode of a pseudocapacitor.03-08-2012
20120014037Two-Step Synthesis of Manganese Oxide Nanostructures on Carbon For Supercapacitor Applications - A process to deposit a conformal coating of manganese oxide nanocrystals within a high surface area connected pore structure of a carbon paper electrode. A two-step process is utilized. In the first step the carbon paper electrode is immersed in an alkaline manganese oxide solution to form a nanocrystal seed layer on the surface and within the pores of the carbon paper. In the second step the seeded carbon paper is immersed in an acidic manganese oxide solution. The result is a densely packed continuous conformal nanocrystal coating both on the surface of the carbon and deep within its pores. The carbon paper is highly suitable for use as an electrode in a supercapacitor.01-19-2012
20100053845COMPOSITE MEMBRANE FOR A CAPACITOR - A composite membrane for a capacitor, comprising: a carrier; a mixture of a catalytic material for catalyzing hydrogen and oxygen, and a dispersion resin. The catalytic material is selected from the group consisting of a precious metal in Group VIII of the periodic table of elements and their alloys, and a rare earth metal of the La group of rare earth metals and their alloys. The carrier is a film formed by at least one of the following: polypropylene, polyethylene, polytetrafluoroethylene and polyamide. The carrier can include asbestos fibers, polypropylene fibers, or their mixture. The dispersion resin can be one of the following: ethylene, Nafion™, polyvinyl alcohol, polyethylene, CMC, and the like. The present disclosure also provides a method for making a composite membrane, and a capacitor with the composite membrane.03-04-2010
20090009929SUPERCAPACITOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - A laminate electrode of a bendable supercapacitor has a carbon fabric element and an electrically conductive current collector element secured by staple-shaped metallic fasteners or metallic wires so as to prevent two elements from being taken apart when the laminate electrode is bent.01-08-2009
20120019984CAPACITOR - A capacitor has a capacitor element, an electrolyte, a cylindrical case made of metal and having a bottom, a metal terminal plate, and a sealing rubber. The terminal plate has a body portion and a flange portion projected from an outer peripheral surface of the body portion toward the case. The sealing rubber is abutted onto the flange portion of the terminal plate, and is interposed between the outer peripheral surface of the body portion of the terminal plate and a side surface of the case for sealing the case. The case has a drawn and grooved portion formed by being drawn and thus grooved from an outside of the side surface at a place so that the sealing rubber is compressed between the outer peripheral surface of the body portion of the terminal plate and the case. Then, a ring-like groove is provided on the outer peripheral surface of the body portion of the terminal plate at a portion, which is padded with the sealing rubber, the sealing rubber is projected into the groove.01-26-2012
20120154982CAPACITOR, AND METHOD FOR PRODUCING THE SAME - A capacitor has a positive electrode, a negative electrode, and a solid electrolyte layer arranged between the electrode layers. At least one of the electrode layers of this capacitor has an Al porous body, and an electrode body held in this Al porous body to polarize the electrolyte. The oxygen content in the surface of the Al porous body is 3.1% by mass or less. The matter that the oxygen content in the surface of the Al porous body is 3.1% by mass or less is equal to the matter that a high-resistance oxide film is hardly formed on the surface of the Al porous body. Thus, this Al porous body makes it possible to make the current collector area of the electrode layer large so that the capacitor can be improved in capacity.06-21-2012
20120026644MESOPOROUS NANOCRYSTALLINE FILM ARCHITECTURE FOR CAPACITIVE STORAGE DEVICES - A mesoporous, nanocrystalline, metal oxide construct particularly suited for capacitive energy storage that has an architecture with short diffusion path lengths and large surface areas and a method for production are provided. Energy density is substantially increased without compromising the capacitive charge storage kinetics and electrode demonstrates long term cycling stability. Charge storage devices with electrodes using the construct can use three different charge storage mechanisms immersed in an electrolyte: (1) cations can be stored in a thin double layer at the electrode/electrolyte interface (non-faradaic mechanism); (2) cations can interact with the bulk of an electroactive material which then undergoes a redox reaction or phase change, as in conventional batteries (faradaic mechanism); or (3) cations can electrochemically adsorb onto the surface of a material through charge transfer processes (faradaic mechanism).02-02-2012
20120026643Supercapacitor with a meso-porous nano graphene electrode - A supercapacitor comprising a two electrodes, a porous separator disposed between the two electrodes, and an ionic liquid electrolyte in physical contact with the two electrodes, wherein at least one of the two electrodes comprises a meso-porous structure being formed of a plurality of nano graphene platelets and multiple pores having a pore size in the range of 2 nm and 25 nm, wherein the graphene platelets are not spacer-modified or surface-modified platelets. Preferably, the graphene platelets are curved, not flat-shaped. The pores are accessible to ionic liquid molecules, enabling the formation of large amounts of electric double layer charges in a supercapacitor, which exhibits an exceptionally high specific capacitance and high energy density.02-02-2012
20120063059HYBRID SUPERCAPACITOR AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a hybrid supercapacitor manufactured according to a method of manufacturing a hybrid supercapacitor including: forming a lithium thin film on one surface of a separator; facing the lithium thin film and an active material layer of an anode each other; forming an electrode cell by alternately disposing the anode and the cathode, having the separator therebetween; and pre-doping the anode with lithium ions from the lithium thin film by receiving the electrode cell and an electrode solution in a housing.03-15-2012
20120063058COMPOSITE ELECTRODE ACTIVE MATERIAL HAVING M1-xRuxO3 (M=Sr, Ba, Mg), SUPERCAPACITOR USING THE SAME AND FABRICATION METHOD THEREOF - Disclosed are a composite electrode active material and a supercapacitor using the same, and more particularly, an electrode active material having M03-15-2012
20120154980CONDUCTIVE POLYMER COMPOSITES - The invention is directed, in an embodiment, to an inherently conductive polymer comprising a conductive polymer, carbon nanotubes, and dinonylnaphthalene sulfonic acid. The conductive polymer may comprise polyaniline. The invention is also directed to polymeric films and supercapacitors comprising the inherently conductive polymer.06-21-2012
20120154983Method of Fabrication of Carbon Nanofibers on Nickel Foam - A method for forming a novel composite of carbon nanofibers grown on a nickel foam is described wherein the composite, when used in a capacitor exhibits superior change retention and discharge capacities. Once the composite material has been obtained, it may be formed into electrodes which can be used to form supercapacitors of large per area capacitances in the order of 1.2 F/cm06-21-2012
20120154981HYBRID SOLID ELECTROLYTE MEMBRANE, METHOD OF MANUFACTURING THE SAME, AND LITHIUM ION CAPACITOR COMPRISING THE SAME - The present invention provides a hybrid solid electrolyte membrane including a lithium electrolyte salt, an organic polymer, and an inorganic material, and a lithium ion capacitor comprising the same. It is possible to overcome damage of a separator and failure of a capacitor due to deposition of lithium ions on a cathode by using a hybrid solid electrolyte membrane in accordance with the present invention in a lithium ion capacitor. Further, it is possible to simplify manufacturing processes without a pre-doping process. Further, the hybrid solid electrolyte membrane can also perform a role of a separator.06-21-2012
20120154979Electrochemical double-layer capacitor for high temperature applications - Methods and apparatus for an electrochemical double-layer capacitor for hostile environments. An electrochemical double-layer capacitor includes two electrodes wetted with an electrolyte, each electrode being attached to or in contact with or coated onto a current collector and separated from each other by a separator porous to the electrolyte, the electrodes, electrolyte and current collector containing less than 1,000 parts per million (ppm) of impurities, while exhibiting a leakage current less than 1 amp per liter of volume over a range of operating temperatures and at a voltage up to a rated voltage.06-21-2012
20090290287ASYMMETRIC ELECTROCHEMICAL SUPERCAPACITOR AND METHOD OF MANUFACTURE THEREOF - The disclosure relates to asymmetric supercapacitors containing: a positive electrode comprising a current collector and a first active material selected from a layered double hydroxide of formula [M11-26-2009
20120127630Solid State Supercapacitor and Method for Manufacturing the Same - A solid state supercapacitor and a method for manufacturing the same is provided, the solid state supercapacitor including two nanowire electrodes with their surface full of nanowire bundle and a dielectric material filled in a space between the two nanowire bundle electrodes and the nanowire bundle, wherein the nanowire bundle includes many nanowires to increase the surface area of electrodes; since the two nanowire bundle electrodes include the nanowire bundle, the surface area thereof is large; a dielectric layer is the original material of the dielectric material, directly reacted, deposited and cured in the space between the two nanowire bundle electrodes without causing pollutions due to additional processing; therefore, the dielectric layer is of high purity and density and has high permittivity to achieve the greatest permittivity of the dielectric material. As a result, the energy capacity of unit volume of the capacitor is effectively increased.05-24-2012
20090135548Positive Electrode for Electric Double Layer Capacitors, and Electric Double Layer Capacitors - The present invention provides a positive electrode for electric double layer capacitors which can improve basic characteristics, such as energy density, of electric double layer capacitors and also can improve electric double layer capacitors in useful life and stability under high temperatures. Provided is a positive electrode for electric double layer capacitors comprising as electrode active materials a carbonaceous material having a ratio of rhombohedral crystal structure to hexagonal crystal structure in crystal structure of carbon within the range of not less than 20%.05-28-2009
20090135547ELECTRIC DOUBLE-LAYERED CAPACITOR - The invention relates to a coin-type electric double-layered capacitor, including activated carbon electrode layers, an electrolytic solution, and a separator between a metal-made top vessel and a metal-made bottom vessel, and obtained by caulking and sealing the top vessel and the bottom vessel with a gasket and a sealing agent, wherein the edges of the top and bottom vessels overlap each other by 0.1 to 0.5 mm. Preferably, the injection amount of the electrolytic solution is in a range of 0.1 to 10% of the void volume in the electrode.05-28-2009
20090213528ADDITIVE FOR NON-AQUEOUS ELECTROLYTE OF ELECTRIC DOUBLE LAYER CAPACITOR, NON-AQUEOUS ELECTROLYTE FOR ELECTRIC DOUBLE LAYER CAPACITOR AND NON-AQUEOUS ELECTROLYTE ELECTRIC DOUBLE LAYER CAPACITOR - This invention relates to an additive for a non-aqueous electrolyte of an electric double layer capacitor comprising a combustion inhibiting substance releasing compound capable of releasing a combustion inhibiting substance having particularly excellent combustion inhibiting effect during combustion, and more particularly to an additive for a non-aqueous electrolyte of an electric double layer capacitor comprising a combustion inhibiting substance releasing compound which releases a combustion inhibiting substance during combustion, characterized in that the combustion inhibiting substance is a phosphine oxide compound having P—F bond and/or P—NH08-27-2009
20100091430Hybrid Energy Storage Device and Method of Making Same - A hybrid energy storage device includes at least one cell comprising at least one positive electrode, at least one negative electrode, a separator placed between said at least one positive and said at least one negative electrode, and an electrolyte. The at least one positive electrode comprises an active material comprising lead and a tab extending from a side of the at least one positive electrode. The at least one negative electrode comprises an activated carbon material, a tab extending from a side of the at least one negative electrode, and a lead lug encapsulating said tab. A first cast-on lead strap is on the tab extending from said at least one positive electrode. A second cast-on lead strap is on the lead lug of the at least one negative electrode.04-15-2010
20120120551ELECTRODE AND METHOD OF MANUFACTURING THE SAME - A method of fabricating a device is disclosed. The method comprises coating a solid structure by nanostructures selected from the group consisting of peptides and amino acids, under conditions that at least partially prevent assembly of the nanostructures into supramolecular structures.05-17-2012
20120250224POWER STORAGE MODULE FOR MICRO-HYBRID SYSTEM WITH ABSORPTION AND INDICATOR ELEMENTS - A power storage module for a hybrid system. The module includes internal absorption elements for absorbing electrolytes, and gasses thereof, that may have separated from a storage cell within the module owing to overvoltages. The module may further include external indicator(s) for indicating that such separated electrolytes are contained within the module case. It is possible to protect a user of the power storage module who wants to open the case of this module, in the event that the power storage cell has released electrolyte in gaseous and/or liquid form into the interior of the case.10-04-2012
20110002086ULTRAPURE SYNTHETIC CARBON MATERIALS - The present application is generally directed to ultrapure synthetic carbon materials having both high surface area and high porosity, ultrapure polymer gels and devices containing the same. The disclosed ultrapure synthetic carbon materials find utility in any number of devices, for example, in electric double layer capacitance devices and batteries. Methods for making ultrapure synthetic carbon materials and ultrapure polymer gels are also disclosed.01-06-2011
20100246095ELECTRIC DOUBLE LAYER CAPACITOR - An electric double layer capacitor comprising a plurality of electrode bodies comprising a positive electrode and a negative electrode laminated via a separator and being impregnated with an electrolyte solution, wherein the plurality of electrode bodies are electrically connected in series, the positive electrode and the negative electrode comprise an active material having pores, the electrolyte solution comprises an electrolyte having a cation and a counteranion of the cation, a ratio of an average pore diameter of the active material of the positive electrode to an ion diameter of the counteranion is in the range of 2.5 to 2.8, and a ratio of an average pore diameter of the active material of the negative electrode to an ion diameter of the cation is in the range of 1.65 to 1.85.09-30-2010
20110182001ACTIVATED CARBON MATERIAL, AND PRODUCTION METHOD AND USE THEREOF - An activated carbon material having a BET specific surface area of 10 to 1,000 m07-28-2011
20110182000MICROPOROUS ACTIVATED CARBON FOR EDLCS - An electric double layer capacitor electrode includes microporous carbon, wherein the microporous carbon includes pores having a size of 1 nm or less, which provide a combined pore volume of at least 0.3 cm07-28-2011
20120134072Electrodes having multi layered structure and supercapacitor including the same - Disclosed herein are electrodes having a multi-layered structure, including at least two active material layers formed on an electrode current collector or including at least two active material layers formed on an electrode current collector, wherein at least two active material layers are stacked thereon, and a supercapacitor comprising the same. The electrodes including at least two active material layers configured of the activated carbon layer having large specific surface area and the graphene layer having excellent electrical conductivity in order to reduce the internal resistance and stacked in a multi layered structure are manufactured and the supercapacitor includes the electrodes to increase capacitance due to the large specific surface area of the activated carbon and reduce the internal resistance due to excellent electrical conductivity of the graphene, thereby making it possible to improve the capacitance and electrical conductivity.05-31-2012
20120134070Porous Carbon for Electrochemical Double Layer Capacitors - An electrochemical double layer capacitor electrode comprising microporous carbon, wherein the microporous carbon comprises a median pore width of 1.2 nanometers or less, and a ratio of BET surface area to total pore volume greater than 2200 m05-31-2012
20120134071ELECTROCHEMICAL DOUBLE-LAYER CAPACITOR USING NANOTUBE ELECTRODE STRUCTURES - Methods and apparatus for an electrochemical double-layer capacitor using nanotube structures. An electrochemical double-layer capacitor includes a first carbon nanotube-based electrode and a second carbon nanotube-based electrode mixed with an electrolyte, the carbon nanotubes comprising multiwall carbon nanotubes (MWNT) fabricated on one of a plurality of substrates using chemical vapor deposition (CVD), and a separator disposed between the first carbon nanotube-based electrode and the second carbon nanotube-based electrode.05-31-2012
20120250225METHOD TO INCREASE THE CAPACITANCE OF ELECTROCHEMICAL CARBON NANOTUBE CAPACITORS BY CONFORMAL DEPOSITION OF NANOPARTICLES - A method of increasing the area of carbon nanotubes used in fabricating capacitors is described. The method involves reacting carbon nanotubes with electrically conductive ions, molecules or nanoparticles that increase the surface area of the nanotubes. The capacitance and the energy stored in the capacitor can be increased by such treatment. Devices constructed from such treated materials and their properties are described.10-04-2012
20120212879HIGH ENERGY HYBRID SUPERCAPACITORS USING LITHIUM METAL POWDERS - A hybrid supercapacitor comprises a negative electrode made of lithium-absorbing material, a positive electrode with high surface area carbon, and a separator inserted in between containing nonaqueous solvent solution of lithium salt as an electrolyte, wherein air-stable lithium metal powder is coated or added to the above negative electrode. The hybrid supercapacitor of the present invention shows a high capacity, high power, long durability, and is easy to manufacture.08-23-2012
20120236468ELECTRIC DOUBLE-LAYER CAPACITOR, AND CURRENT COLLECTOR FOR ELECTRIC DOUBLE-LAYER CAPACITOR - The electric double-layer capacitor of the present invention comprises an electrolyte solution comprising γ-butyrolactone as the solvent and a coated electrode. The coated electrode is produced by using water as the solvent, and prepared by coating a slurry onto a current collector, wherein the slurry consists of an electrode material which is the solute, an electrically conductive auxiliary agent, and an elastomer having an expansion rate of 50% or less in γ-butyrolactone at 85° C. after 100 hours as the binding agent. For example, a styrene-butadiene elastomer is employed as the elastomer. Because expansion rate in γ-butyrolactone is low, deterioration of internal resistance does not occur. Styrene-butadiene elastomer is easy to handle since water can be used as the solvent for the slurry.09-20-2012
20120236467ULTRACAPACITOR, METHODS OF MANUFACTURING AND APPLICATIONS OF THE SAME - In one aspect of the present invention, an ultracapacitor has a first plate, a second plate and a separator sandwiched between the first plate and the second plate. Each of the first plate and the second plate includes a substrate, first nanostructures formed on the substrate, and second nanostructures, being different from the first nanostructures, attached to the first nanostructures. The first nanostructures include carbon nanotubes (CNTs) or carbon fibers/nanofibers (CFs). The second nanostructures include nano-particles of an active material including MnO09-20-2012
20120176728ELECTROCHEMICAL CELL AND ELECTROCHEMICAL CAPACITOR - An electrochemical cell includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode and/or the negative electrode includes a penetrating portion that penetrates the electrodes in the thickness direction. Further, an electrochemical capacitor includes a positive electrode, a negative electrode, and an electrolyte solution. In a plane of projection in which a region carrying a negative electrode active material of the negative electrode is projected onto a region carrying a positive electrode active material of the positive electrode along a opposed direction, the ratio of an area carrying the positive electrode active material to an area carrying the negative electrode active material is less than 1.07-12-2012
20100214721Electric double layer capacitor package - An electric double layer capacitor package includes a package body including a groove region formed by removing a portion from a surface thereof, an electric double layer capacitor disposed in the groove region of the package body, and including first and second electrodes and an ion permeable separator disposed between the first and second electrodes, and first and second conductive vias each disposed in an inner portion of the package body and each having one end connected to one of the first and second electrodes, respectively and the other end extending from the one end toward a bottom surface of the package body in the case that the surface is defined as an upper region of the package body. The electric double layer capacitor package can be surface-mounted without using an additional structure. The use of the electric double layer capacitor package achieves a reduction in thickness and mounting area, thereby contributing to the production of lighter and smaller products.08-26-2010
20100033899ELECTRICAL DOUBLE LAYER CAPACITOR - The present invention provides an electrical double layer capacity comprising a non-aqueous electrolytic solution comprising (A) a solvent comprising a specific fluorine-containing cyclic carbonate and (B) an electrolyte salt comprising a cyclic quaternary onium salt comprising cyclic quaternary onium cation and PF02-11-2010
20120182666CONDUCTIVE POLYMER COMPOSITES - The invention is directed, in an embodiment, to an inherently conductive polymer comprising a conductive polymer, carbon nanotubes, and dinonylnaphthalene sulfonic acid. The conductive polymer may comprise polyaniline. The invention is also directed to polymeric films and supercapacitors comprising the inherently conductive polymer.07-19-2012
20090284900Electrode Material for Electric Double Layer Capacitor, Method for Producing the Same, Electrode for Electric Double Layer Capacitor and Electric Double Layer Capacitor - An electrode material for an electric double layer capacitor, where a moldability is good, a flexion resistance and a cohesiveness to a current collector after molding into an active material layer are high and an internal resistance can be reduced, an electrode for an electric double layer capacitor obtained using the electrode material, and a capacitor are provided. The electrode material for the electric double layer capacitor is composed of a mixture particle containing a binder and an electrode active material, and in said mixture particle, 50 area % or more of a surface of said mixture particle has been coated with the binder.11-19-2009
20120275082SUPERCAPACITOR AND METHOD FOR FORMING THE SAME - A supercapacitor including at least one first electrode substrate having a surface coated with an active material, and at least one second electrode substrate having a surface coated with the active material, wherein the at least one first electrode substrate has a polarity reverse to that of the at least one second electrode substrate. The at least one first and second electrode substrates are stacked in an alternating arrangement. A plurality of the first electrode substrate having the same polarity or a plurality of the second electrode substrate having the same polarity is connected in parallel. The at least one first and second electrode substrates include stacking portions each having opposite surfaces arranged with a frame-shaped insulating ring. An electrolyte is accommodated in spaces enclosed by the opposite surfaces of each stacking portion of the at least one first and second electrode substrates and each insulating ring.11-01-2012
20120262843HIGH-LOAD RATE SUPERCAPACITOR ELECTRODE AND METHOD FOR OBTAINING SAME BY EXTRUSION - An electrode or a supercondenser. The electrode paste is a mixture containing a polymer formed using a liquid softening agent and an active charge. The paste is in the form of gel having an elasticity module of between 1010-18-2012
20120262844METHOD FOR MANUFACTURING METAL ELECTRODE HAVING TRANSITION METALLIC COATING LAYER AND METAL ELECTRODE MANUFACTURED THEREBY - It is to provide a method for manufacturing a metal electrode having transition metal oxide coating layer and a metal electrode manufactured thereby, which eliminates a contact resistance problem and simultaneously improves electric conductivity of the electrode by using a one body electrode, which is not requiring separate current collector and binder, and further maintains pseudo-capacitance from the redox reaction by coating the metal surface with a transition metal oxide.10-18-2012
20120262842High Performance Transition Metal Carbide and Nitride and Boride Based Asymmetric Supercapacitors - In accordance with an embodiment of the disclosure, an asymmetric supercapacitor includes a first active material with a high hydrogen over-potential and a second active material with a high oxygen over-potential. The first active material is based on a nitride, an oxynitride, a carbide, an oxycarbide, a boride, or an oxyboride of a metal selected from Groups III, IV, V, VI, and VII of the Periodic Table.10-18-2012
20120081837Electrolyte System - An electrolyte system having a conductive salt dispersed in a solvent mixture, the solvent mixture having an organic nitrile solvent and a co-solvent. The concentration of the conductive salt in the electrolyte system is 1.25 molar to 3.0 molar.04-05-2012
20120081838ENHANCED PACKING OF ENERGY STORAGE PARTICLES - The present application is generally directed to energy storage materials such as activated carbon comprising enhanced particle packing properties and devices containing the same. The energy storage materials find utility in any number of devices, for example, in electric double layer capacitance devices and batteries. Methods for making the energy storage materials are also disclosed.04-05-2012
20120257326Ultracapacitor With Improved Aging Performance - An electric double layer capacitor comprises first and second electrodes, each comprising respective first and second carbon materials having distinct pore size distributions. A pore volume ratio of the first carbon material is greater than a pore volume ratio of the second carbon material. The pore volume ratio R is defined as R=V10-11-2012
20090015987CAPACITOR AND METHOD OF PRODUCING THE SAME - A capacitor includes a first electrode, a second electrode, a separator placed between the first and second electrodes, and an electrolyte. The first electrode includes a first collector made of metal foil, a first electrode layer containing carbon formed on the surface of the first collector, and a first protector covering the cross section of the first collector. The second electrode includes a second collector made of metal foil, a second electrode layer containing carbon formed on the surface of the second collector, and a second protector covering the cross section of the second collector.01-15-2009
20100328845Nano-structured flexible electrodes, and energy storage devices using the same - An electrical energy storage device structure comprises a first conductive sheet, a second conductive sheet and an electrolyte sheet placed between the first conductive sheet and the second conductive sheet. In the device, at least one of the first conductive sheet and the second conductive sheet comprises a layer of carbon nanoparticles. The carbon nanoparticle layer is arranged to be adjacent to the electrolyte sheet. The carbon nanoparticles may include both high aspect ratio carbon nanoparticles and low aspect ratio carbon nanoparticles. The device is flexible and at least partially transparent.12-30-2010
20080297980Layered carbon electrodes useful in electric double layer capacitors and capacitive deionization and methods of making the same - Carbon electrodes for use in, for example, Capacitive Deionization (CDI) of a fluid stream or, for example, an electric double layer capacitor (EDCL). Methods of making the carbon electrodes are also described. The carbon electrode comprises an electrically conductive porous carbon support and a carbon cover layer comprising carbon particles in contact with the electrically conductive porous carbon support. A carbonizable material is within the electrically conductive porous carbon support and provides a bond to the carbon particles at the interface of the electrically conductive porous carbon support and the carbon cover layer. The electrically conductive porous support in some embodiments is a layered structure, where one of the layers is a carbonizable paste layer having electrically conductive particles mixed therein.12-04-2008
20080297981Capacitor - The present invention is characterized by obtaining a high charge/discharge capacity upon high rate charging/discharging in a hybrid capacitor having characteristics of both an electric double layer capacitor and a lithium-ion secondary battery. Specifically, the present invention is a capacitor comprising: a positive electrode 12-04-2008
20120327560Energy Storage Device, an Inorganic Gelled Electrolyte and Methods Thereof - The present disclosure is related to hybrid capacitors specifically to PbO12-27-2012
20100033902COMPOSITE CONTAINING CARBONIZED BIOPOLYMERS AND CARBON NANOTUBES AND METHOD OF MAKING THE COMPOSITE - A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.02-11-2010
20110038099ULTRACAPACITOR POWER STORAGE DEVICE - The specification discloses a method of making an ultracapacitor including the steps of forming a first electrode by adhering CNT on a porous first substrate; placing a non conductive separator over the first electrode, forming a second electrode by adhering a second layer of CNT to a second substrate and placing over the first substrate, attaching a conductive tab to each electrode, rolling the combined electrodes, inserting the rolled electrodes into a metal can, attaching one conductive tab to the bottom of the can, adding an electrolyte to the can, attaching the second conductive tab to a lid of the can, and placing an insulator between the lid and the can.02-17-2011
20120127631ELECTROLYTE SYSTEM - The present invention relates to electrolyte systems and electrochemical cells comprising conductive salts having different anionic and/or cationic radii.05-24-2012
20110235241Flexible supercapacitor, method of manufacturing the same, and device including the flexible supercapacitor - A flexible supercapacitor, a method of manufacturing the same, and a device including the same are provided, the flexible supercapacitor includes a first flexible electrode assembly, a second flexible electrode assembly corresponding to the first flexible electrode assembly, a separator for preventing contact between the first flexible electrode assembly and the second flexible electrode assembly, and an electrolyte between the first flexible electrode assembly and the second flexible electrode assembly. The flexible supercapacitor may include a tube including the first flexible electrode assembly, the second flexible electrode assembly, the separator, and the electrolyte.09-29-2011
20110242731SPIRAL WOUND ELECTRICAL DEVICES CONTAINING CARBON NANOTUBE-INFUSED ELECTRODE MATERIALS AND METHODS AND APPARATUSES FOR PRODUCTION THEREOF - Electrical devices having electrodes containing carbon nanotubes infused to a substrate are described herein. The electrical devices contain at least a first electrode material containing a first plurality of carbon nanotubes infused to a first substrate and a second electrode material containing a second plurality of carbon nanotubes infused to a second substrate. The first electrode material and the second electrode material are wound in a spiral configuration about a central axis. The electrical devices can be supercapacitors, which also contain at least an electrolyte in contact with the first electrode material and the second electrode material, and a first separator material disposed between the first electrode material and the second electrode material. Methods and apparatuses for making the electrical devices are also disclosed herein.10-06-2011
20120087061Transition Metal Carbide or Nitride or Boride Based Supercapacitors with Metal Foam Electrode Substrate - In accordance with an embodiment of the disclosure, a method of making a supercapacitor includes impregnating a foam electrode substrate with an active material precursor, wherein the foam electrode substrate includes a plurality of pores and the active material precursor is dispersed into the pores. The method further includes reacting the active material precursor infiltrated foam substrate with a reductant under conditions sufficient to convert the active material precursor to an active material, wherein the active material is based on a nitride, an oxynitride, a carbide, or an oxycarbide of a metal selected from Groups III, IV, V, VI, or VII of the Periodic Table.04-12-2012
20120087060SUPERCAPACITOR MODULE - Disclosed herein is a supercapacitor module. The supercapacitor module includes: a plurality of supercapacitors; and a plurality of water cooling jackets having the plurality of supercapacitors inserted therebetween to be stacked and having cooling flow passages protrudedly connected to both sides thereof; wherein the supercapacitors and the cooling jackets are alternately stacked, each of fixing plates is combined with the water cooling jacket at an uppermost layer and the water cooling jacket at a bottommost layer, and the fixing plates are supported by a supporter.04-12-2012
20120327559ULTRACAPACITORS USING TRANSITION METAL NITRIDE-CONTAINING ELECTRODE AND TRANSITION METAL NITRIDE - The present invention discloses a new construction of ultracapacitor utilizing particles of transition metal nitride having negligible amount of halide impurities. The construction is expected to attain high specific energy density by using transition metal nitride particles and higher reliability by avoiding potential corrosion of metal components with halide impurities. The transition metal nitride particles are preferably synthesized by basic ammonothermal process, which utilizes supercritical ammonia with alkali metal mineralizers. Transition metal nitride such as vanadium nitride, molybdenum nitride, titanium nitride, nickel nitride, neodymium nitride, iron nitride, etc. can be synthesized in supercritical ammonia with reducing mineralizers such as potassium, sodium, lithium, magnesium, calcium, and aluminum. Since supercritical ammonia has characteristics of both gas and liquid, it can over complicated fine structure or fine particles. The new method is suitable for forming a protective coating on complicated structure or forming micro- to nano-sized particles.12-27-2012
20120092809ELECTRONIC COMPONENT AND ELECTRONIC DEVICE - An electric double-layer capacitor is provided in which an upper end portion of a recessed container is sealed by a sealing plate. An electrode and an electrode are accommodated in a hollow portion formed by a recessed portion and the sealing plate. One step portion is formed in the middle of one inner peripheral surface of the recessed portion, and another step portion is formed in the middle of the other opposing inner peripheral surface. The one step portion and said another step portion are formed at the same height, and upper surfaces of those step portions exist on the same plane.04-19-2012
20120092808HIGH VOLTAGE ELECTRIC DOUBLE LAYER CAPACITOR DEVICE AND METHODS OF MANUFACTURE - Electric double layer capacitor (EDLC) devices include sealing conductor establishing a series connection between multiple storage cells in a single package, which may be operable at higher voltages than conventional EDLC devices.04-19-2012
20100134954ELECTRODES FOR ELECTROCHEMICAL CELLS - A hybrid supercapacitor comprises a double layer electrode and a redox electrode, in which the ratio of the volumes, and hence the thicknesses, of the two electrodes is significantly higher than previously considered optimum, specifically from 9:1 to 100:1.06-03-2010
20130016450Supercapacitor Cell and Supercapacitive Module Incorporating a Plurality of these CellsAANM Voillequin; BaptisteAACI AvonAACO FRAAGP Voillequin; Baptiste Avon FRAANM Dieudonne; MarieAACI LaguioleAACO FRAAGP Dieudonne; Marie Laguiole FRAANM Tavin; GerardAACI AngersAACO FRAAGP Tavin; Gerard Angers FRAANM Violon; EricAACI AmillyAACO FRAAGP Violon; Eric Amilly FR - A supercapacitor cell is provided having unit cells arranged in series and encapsulated in a flexible and leak-tight packaging, and a supercapacitor module having at least one stack of several of these cells. The cell includes n unit cells (n≧2) arranged side by side in series and encapsulated in the packaging, each unit cell having two upper and lower electrodes, a membrane separating them and an ionic electrolyte, the cell having inside of the packaging a plurality of current collectors, two upper and lower collector parts of which respectively cover the upper and lower electrodes. A pair of adjacent unit cells is covered with an upper or lower collector common to this pair, two truncated upper and/or lower collectors formed at two ends of the cell, two adjacent collectors respectively terminated by facing edge sections electrically insulated from one another by an insulating adhesive material covering them.01-17-2013
20130016451DOUBLE-LAYER CAPACITORAANM Kaskel; StefanAACI DresdenAACO DEAAGP Kaskel; Stefan Dresden DEAANM Rose; MarcusAACI AachenAACO DEAAGP Rose; Marcus Aachen DEAANM Borchardt; LarsAACI DresdenAACO DEAAGP Borchardt; Lars Dresden DE - The invention relates to double layer capacitors with which a storage of electric energy with high energy density and specific electric capacitance is possible. In the double layer capacitor, two electrodes are arranged at a spacing from one another. They are formed from porous carbon and provided with electric connector contacts. The double layer capacitor is arranged in an electrolyte or the electrodes are wetted with an electrolyte. In this respect, the carbon forming the electrode(s) was obtained from a carbide by chemical reaction for at least one electrode. A specific surface of at least 2000 m01-17-2013
20130016452CHARGE STORAGE DEVICE, METHOD OF MAKING SAME, METHOD OF MAKING AN ELECTRICALLY CONDUCTIVE STRUCTURE FOR SAME, MOBILE ELECTRONIC DEVICE USING SAME, AND MICROELECTRONIC DEVICE CONTAINING SAMEAANM Gardner; Donald S.AACI Mountain ViewAAST CAAACO USAAGP Gardner; Donald S. Mountain View CA USAANM Hannah; Eric C.AACI Pebble BeachAAST CAAACO USAAGP Hannah; Eric C. Pebble Beach CA USAANM Chen; RongAACI SunnyvaleAAST CAAACO USAAGP Chen; Rong Sunnyvale CA USAANM Gustafson; John L.AACI PleasantonAAST CAAACO USAAGP Gustafson; John L. Pleasanton CA US - In one embodiment a charge storage device includes first (01-17-2013
20110157774Package for an Electrical Device - A supercapacitor (06-30-2011
20110157773ELECTRODE FOR LITHIUM ION CAPACITOR AND LITHIUM ION CAPACITOR - [Problem] To provide an electrode for lithium ion capacitor having excellent electrode strength, a lithium ion capacitor wherein the internal resistance can be decreased and the power density can be increased.06-30-2011
20110157772Spacer-modified nano graphene electrodes for supercapacitors - A surface-modified nano graphene platelet (NGP), comprising: (a) a nano graphene platelet having a thickness smaller than 10 nm; and (b) discrete, non-continuous, and non-metallic bumps or nodules bonded to a surface of the graphene platelet to serve as a spacer. When multiple surface-modified NGP sheets are stacked together to form an electrode, large numbers of electrolyte-accessible pores are formed, enabling the formation of large amounts of double layer charges in a supercapacitor, which exhibits an exceptionally high specific capacitance.06-30-2011
20130021718CHEMICAL VAPOR DEPOSITION GRAPHENE FOAM ELECTRODES FOR PSEUDO-CAPACITORS - Technologies are generally described for a porous graphene electrode material is described herein that may incorporate a three-dimensional open-cell graphene structure fabricated via chemical vapor deposition onto a metal foam. After the graphene is deposited, the metal foam may be dissolved, leaving a three-dimensional open-cell graphene structure that may include single or few layer graphene. Pseudo-capacitive materials, such as RuO01-24-2013
20130021719MICROPOROUS SEPARATOR-FILM FOR DOUBLE-LAYER CAPACITORS - The invention relates to a biaxially orientated, single or multi-layered porous film made of propylene homopolymer and/or propylene blockcopolymer and ss-nucleation agent. Said film has a Gurley value of between 50 to <400 s and shrinkage in the longitudinal direction of <5% at 100 DEG C./1 hour, and a transverse shrinkage of <10% at 100 DEG C./1 hour.01-24-2013
20120243145ELECTRIC DOUBLE LAYER CAPACITOR - An object of the present invention is to provide an electric double layer capacitor which has a high withstand voltage, and is resistant to degradation and excellent in long term reliability. Disclosed is an electrolytic solution for an electric double layer capacitor including a solvent (I) for dissolving an electrolyte salt and an electrolyte salt (II), wherein the solvent (I) for dissolving an electrolyte salt includes a sulfolane compound and a fluorine-containing chain ether. Also disclosed is an electric double layer capacitor using the electrolytic solution.09-27-2012
20080232028Supercapacitor using carbon nanosheets as electrode - A supercapacitor comprising a first electrode, a second electrode, and a separator. The electrodes are created with carbon nanosheets in various configurations. The electrodes are impregnated with an electrolyte.09-25-2008
20100085683ELECTROLYTE, ELECTROLYTIC SOLUTION, AND ELECTROCHEMICAL DEVICE USING THE SAME - Disclosed herein is an electrolyte having excellent long-term reliability, a high withstanding voltage (a wide potential window), and high conductivity.04-08-2010
20080225464Supercapacitors and Methods of Manufacturing Same - A capacitor is provided. The capacitor includes opposing electrodes fabricated from a non-woven carbon nanotube sheet bonded to opposing noble metal foils. The capacitor also includes a non-porous casing within which the opposing electrodes are placed. The capacitor further includes electrically conductive contacts extending from the noble metal foils through an opening in the casing. The capacitor can be a portable capacitor. A method of manufacturing the capacitor is also provided.09-18-2008
20130176659ELECTRIC DOUBLE-LAYER CAPACITOR - An electric double-layer capacitor comprises a first polarizing electrode and a second polarizing electrode including a carbon nanotube aggregate formed by aggregating a plurality of carbon nanotubes and an electrolyte solution being immersed between the plurality of carbon nanotubes, the first polarizing electrode and the second polarizing electrode are provided with a conductivity of 0.5 S/cm; an electrode partially connected to the first polarizing electrode and the second polarizing electrode; and a separator arranged between the first polarizing electrode and the second polarizing electrodes; wherein the carbon nanotube aggregate has a relative surface area of 800 m07-11-2013
20130176660Carbonaceous Composition for Supercapacitor Cell Electrode, Electrode, Process for the Manufacture Thereof and Cell Incorporating Same - A carbonaceous composition usable to constitute a supercapacitor cell electrode, a porous electrode usable to equip such a cell, a process for manufacturing this electrode and one such cell incorporating at least one such electrode, for example in order to equip an electric vehicle. This composition is usable to be in contact with an aqueous ionic electrolyte, is based on a carbonaceous powder and comprises a hydrophilic binder-forming system. The system may include between 3% and 10% by weight a first crosslinked polymer having a number-average molecular weight Mn of greater than 1000 g/mol and having alcohol groups, and between 0.3% and 3% by weight a second polymer of at least one acid and which has a pKa of between 0 and 6 and a number-average molecular weight Mn of greater than 500 g/mol, the first polymer being crosslinked thermally in the presence of the second polymer.07-11-2013
20130176661Apparatus and Associated Methods - An apparatus, the apparatus including first and second circuit boards, and an electrolyte, the first and second circuit boards each including a capacitive element, wherein the apparatus is configured such that a chamber is defined between the first and second circuit boards with the capacitive elements contained therein and facing one another, the chamber including the electrolyte, and wherein the apparatus is configured to store electrical charge when a potential difference is applied between the capacitive elements.07-11-2013
20130170097YTTRIA-STABILIZED ZIRCONIA BASED CAPACITOR - Devices and methods for storing energy at a high density are described. In some embodiments, the devices include a first electrode and a second electrode containing a transition metal oxide. A solid electrolyte having yttria-stabilized zirconia (YSZ) is located between the first and second electrode. The thickness of the electrolyte located between the two electrodes is less than one micrometer.07-04-2013
20130170098ASYMMETRIC HYBRID SUPERCAPACITORS BASED ON NANOTUBE NANOWIRE COMPOSITES - An asymmetric supercapacitor includes a first structure and a second structure spaced apart from said second structure. One of the structures comprises an anode, and the other of the first and second structures comprises a cathode, wherein the first structure comprises an activated carbon electrode, and the second structure comprises a nanocomposite electrode. The nanocomposite electrode comprises a first network of nanowires that are interpenetrating with a second network of carbon nanotubes.07-04-2013
20130170099ELECTRODE OF ENERGY STORAGE AND METHOD FOR MANUFACTURING THE SAME - Disclosed herein are an electrode of an energy storage and a method for manufacturing the same. The electrode includes: a current collector; a first electrode layer provided on one surface or both surfaces of the current collector; and a second electrode layer bonded to an outer surface of the first electrode layer, wherein in each of the first and second electrode layers, content ratios of an active material, a conductive material, and a binder, and materials thereof are different. Therefore, reliability of the energy storage may be increased and resistance thereof may be decreased.07-04-2013
20130170100ELECTRODE, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL CAPACITOR INCLUDING THE SAME - Disclosed herein are an electrode including a plurality of electrode active material layers formed above an electrode current collector, each of the electrode active material layers including different structures of binders; a method for manufacturing the same; and an electrochemical capacitor. 07-04-2013
20080218938NEGATIVE ELECTRODE CURRENT COLLECTOR FOR HETEROGENEOUS ELECTROCHEMICAL CAPACITOR AND METHOD OF MANUFACTURE THEREOF - A current collector for use in an electric double layer electrochemical capacitor having a sulfuric acid electrolyte. The current collector uses a conducting carbon (e.g., graphite foil) basis with p-type conductivity. A protective film covers at least a portion of the graphite foil basis. The protective film is comprised of a conducting composite material made with a conducting carbon and a conducting organic polymer with p-type conductivity. The protective film is grown on the current collector basis such that it preferably fills the pores of the current collector basis. A lug portion of the current collector basis may be protected with an insulating polymer material.09-11-2008
20130100583Polarizable Electrode Material For Electric Double Layer Capacitor Having Improved Withstand Voltage and Electric Double Layer Capacitor Using The Same - The object of the invention is to provide a polarizing electrode material for a high withstand voltage-type electric double layer capacitor with high energy density and also with little time-dependent deterioration in capacitance or resistance, namely having excellent long-term reliability, as well as an electric double layer capacitor using the same.04-25-2013
20130100582ELECTRIC DOUBLE LAYER CAPACITOR - The present invention relates to an electric double layer capacitor in which particle sizes of a cathode active material and an anode active material are different from each other, and a difference in the particle size between the cathode active material and the anode active material is 3 to 10 μm; or conductive agent contents in electrode active material compositions of a cathode and an anode are different from each other, and a difference in the conductive agent content between the electrode active material compositions of the cathode and the anode is 5 to 25 wt %.04-25-2013
20130100581ELECTRIC DOUBLE LAYER CAPACITOR - The present invention relates to an electric double layer capacitor including: an anode formed by applying a conductive layer and an anode active material layer on an anode current collector; and a cathode including a cathode active material layer on a cathode current collector.04-25-2013
20130100580ELECTRIC DOUBLE LAYER CAPACITOR - The present invention relates to an electric double layer capacitor including electrodes using a cathode current collector and an anode current collector with different thicknesses.04-25-2013
20110267740PACKAGING FOR ELECTROCHEMICALLY ACTIVE MATERIALS, DEVICES MADE THEREFROM, AND METHODS OF MAKING THE SAME - The disclosure relates to packaging for electrochemically active materials comprising a housing comprising at least one active coating, devices made therefrom, and methods of making the same.11-03-2011
20130141839CHARGE STORAGE DEVICE AND METHOD OF MANUFACTURING IT - The present invention provides a charge storage device, comprising a pair of electrodes, each electrode being operable to store electric charge and having a respective capacitance C06-06-2013
20080212260Supercapacitor with Reduced Internal Resistance - There is provided a supercapacitor with a significantly reduced internal resistance. The supercapacitor comprises two electrodes in which each of the two electrodes is comprised of a current collector and an electrode active material adhered to the current collector, a separator positioned between the two electrodes, an electrolyte and a package, wherein the current collector is a metal thin plate having a conductive metal oxide layer thereon and the electrode active material is adhered on a surface of the conductive metal oxide layer. The supercapacitor according to the present invention has a significantly reduced internal resistance and a highly enhanced charge capacitance.09-04-2008
20130148265ELECTRODE FOR ELECTRIC STORAGE DEVICE, ELECTRIC STORAGE DEVICE AND MANUFACTURING METHOD OF ELECTRODE FOR ELECTRIC STORAGE DEVICE - An electrode for an electric storage device includes at least an active material selected from the group consisting of a carbon nanotube, activated carbon, hard carbon, graphite, graphene and a carbon nanohorn; an ionic liquid; and a three-dimensional network metal porous body.06-13-2013
20080204972Electric Double Layer Capacitor - Disclosed is an electric double layer capacitor which is excellent in rate characteristics and low-temperature characteristics while having a high capacitance even when an electrolyte solution containing a high-concentration ionic liquid is used. Specifically disclosed is an electric double layer capacitor comprising a pair of polarizable electrodes and an electrolyte solution. As the polarizable electrodes, there is used one mainly composed of an activated carbon which has the peak in the micropore radius distribution determined by the MP method within a range from 5.0×1008-28-2008
20130155577CAPACITOR CELL WITH HIGH-SPECIFIC-ENERGY ORGANIC SYSTEM - The present invention relates to an organic capacitor battery with high specific energy and high specific power. It is composed of an anode, a cathode, a separator in-between the cathode and anode, and an organic electrolyte. The characteristics of the capacitor battery are that the anode is a mixture of porous carbon materials with a lithium-ion intercalation compound, the cathode is hard carbon, and the electrolyte is an organic solvent electrolyte containing lithium ions. The super capacitor battery prepared according to this invention has high energy density (up to 20-90 W/Kg) and high power density (>4500 W/Kg, and it can be widely used in electric vehicles, power tools, solar energy storage, wind energy storage, portable appliances and other fields.06-20-2013
20130155578CAPACITOR AND MANUFACTURING METHOD THEREOF - A capacitor and a manufacturing method thereof are provided. Two electrodes are disposed opposite to each other. Two electrode protection layers are respectively disposed on inner sides of the electrodes and include carbon particles each covered and bonded with a polymer shell. Active carbon layers are disposed on opposite inner sides of the electrode protection layers. The separator is disposed between the active carbon layers. The electrolyte fills between the electrode protection layers. The polymer shells of each electrode protection layer are bonded to the surface of the corresponding electrode by first and second functional groups. The first functional groups include thiol groups. The second functional groups include epoxy groups or carboxylic groups. The electrode protection layers serve as adhesion layers between the active carbon layers and the electrodes, and protect the electrodes from being corroded by the acid electrolyte solution.06-20-2013
20130155579FLEXIBLE CONDUCTING POLYMER ENERGY STORAGE DEVICE - Electrochemical redox supercapacitor. The supercapacitor includes two thin films of electrically conducting polymer separated by an ion-permeable membrane and including an electrolyte disposed between the two thin films. Electrical contacts are disposed on outer surfaces of the two thin films. The supercapacitor is flexible and may be rolled, folded on itself, or kept substantially flat. A suitable conducting polymer is polypyrrole. In another aspect, the invention is a method for making a redox supercapacitor.06-20-2013
20130182373FILM-TYPE SUPERCAPACITOR AND MANUFACTURING METHOD THEREOF - The present invention relates to a film-type micro-supercapacitor and a manufacturing method thereof including a method for manufacturing an electrode film by using graphene or graphene oxide, a method for forming a two-dimensional electrode by separating a graphene or graphene oxide electrode film into two independent electrodes through patterning, a method for forming an in-plane structure of the two-dimensional electrode, a method for forming a current collector on an electrode, and a method for manufacturing a supercapacitor with a micrometer thickness by supplying an electrolyte to the two-dimensional electrode. The film-type micro-supercapacitor can efficiently replace or support the battery in the field of very small electronic devices such as microelectromechanical systems (MEMS), paper-like displays, or smartcards requiring a very small power supply.07-18-2013
20130120906CELL DESIGN FOR HIGH ENERGY DENSITY ELECTROCHEMICAL DOUBLE LAYER CAPACITORS - A package for an electrochemical double layer capacitor comprises a housing defining an interior volume, the housing having an end wall, side walls, and an end cap configured to sealably engage with the side walls to enclose the interior volume, wherein the interior volume has a height (h05-16-2013
20110310529Electrochemical capacitor and method for manufacturing the same - There are provided an electrochemical capacitor and a method for manufacturing the same. The electrochemical capacitor according to the present invention includes: a plurality of first and second electrodes disposed to be opposite to each other; a separator disposed between the first and second electrodes; wherein at least one of the plurality of first electrodes is made of an electrode material doped with lithium ions and a lithium layer having the dendrite is formed on the surface of the electrode material.12-22-2011
20130188294CATHODE ACTIVE MATERIAL FOR A LITHIUM ION CAPACITOR, AND METHOD FOR PRODUCING THE CATHODE ACTIVE MATERIAL - The present invention relates to a lithium ion capacitor having excellent capacitance characteristics and high energy density. More particularly, the present invention relates to a cathode active material for a lithium ion capacitor, which utilizes a lithium composite metal oxide having a large initial irreversible capacitance as a specific cathode additive in addition to a carbon-based material applied as a cathode active material, and a production method thereof, and a lithium ion capacitor including the same.07-25-2013
20120008253POROUS ELECTRODES, DEVICES INCLUDING THE POROUS ELECTRODES, AND METHODS FOR THEIR PRODUCTION - Disclosed is a porous electrode comprising a porous film (A) with through pores and an electrically conducting material selected from the group consisting of conductor and semiconductor, the porous film (A) having an average pore size d1 of from 0.02 to 3 μm and a porosity of from 40 to 90%, the electrically conducting material being filled in the through pores of the porous film (A). A dye-sensitized solar cell and an electric double layer capacitor including the porous electrode as a constituent are also disclosed.01-12-2012
20120014038CARBON NANOTUBE BASED SUPERCAPACITOR - A supercapacitor includes a first electrode, a second electrode, and a solid-state polymer electrolyte. The first electrode and the second electrode are spaced from each other and immersed in the solid-state polymer electrolyte. The first and second electrode includes a carbon nanotube structure and an electrically conductive polymer layer. The carbon nanotube structure includes a number of carbon nanotubes and a number of micropores defined between adjacent two carbon nanotubes. The electrically conductive polymer layer coats surfaces of the number of carbon nanotubes.01-19-2012
20120019983ELECTRONIC COMPONENT, ELECTRONIC DEVICE, AND MANUFACTURING METHOD FOR THE ELECTRONIC COMPONENT - Provided is an electric double-layer capacitor and the like, which may be easily manufactured. In a recessed container (01-26-2012
20130194722SUPERCAPACITOR MODULE AND FABRICATION METHOD THEREOF - A supercapacitor module includes: two main substrates each including an insulator plate, at least one electrical conductive unit formed on a surface of the insulator plate facing toward the other one of the two main substrates, and a circuit unit electrically connecting the electrical conductive unit to an external power; a separator film unit including a liquid-permeable insulating film disposed between the two main substrates; and an electrolyte filled between the two main substrates and cooperating with the liquid-permeable insulating film and the electrical conductive units of the two main substrates to form at least one supercapacitor between the two main substrates.08-01-2013
20130194720DOUBLE LAYER CAPACITORS - Activated carbons having improved volumetric capacitance and double layer capacitors including these activated carbons are described herein.08-01-2013
20130194721ACTIVATED CARBON FOR LITHIUM ION CAPACITOR, ELECTRODE INCLUDING THE ACTIVATED CARBON AS ACTIVE MATERIAL, AND LITHIUM ION CAPACITOR USING THE ELECTRODE - Disclosed herein are an activated carbon for a lithium ion capacitor, including mesopores with a pore size of 2˜50 nm in a content of 20˜30% based on all pores therein, an electrode including the activated carbon as an active material, and a lithium ion capacitor using the electrode. Accordingly, there can be provided an activated carbon having appropriate mesopores for allowing an increase in capacitance by free adsorption and desorption of the lithium ions, and a lithium ion capacitor storage device having a long lifespan and high input and output characteristics and further having reliability on high-rate charging and discharging cycles by including the activated carbon as an active material.08-01-2013
20130194724ELECTRODE, METHOD FOR FABRICATING THE SAME, AND ELECTROCHEMICAL CAPACITOR INCLUDING THE SAME - Disclosed herein are an electrode, a method for fabricating the same, and an electrochemical capacitor including the same, the electrode including an electrode current collector; a plurality of first active material layers made of a complex of graphene and carbon nanotubes (CNT) above the electrode current collector; and a plurality of second active material layers made of carbon nanofibers (CNF), each of the second active material layers being interposed between the first active material layers. According to the present invention, an electrochemical device having high capacitance and output can be provided by using materials such as graphene, carbon nanotubes (CNT), and carbon nanofibers (CNF), which have excellent specific surface area and electric conductivity, as an electrode active material, and thereby to fabricate an electrode having a multilayer structure.08-01-2013
20130194723USE OF ORGANIC AND ORGANOMETALLIC HIGH DIELECTRIC CONSTANT MATERIAL FOR IMPROVED ENERGY STORAGE DEVICES AND ASSOCIATED METHODS - A dielectric material is provided. The dielectric material includes at least one layer of a substantially continuous phase material. The material is selected from the group consisting of an organic, organometallic, or combination thereof in which the substantially continuous phase material has delocalized electrons.08-01-2013

Patent applications in class Double layer electrolytic capacitor