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429 - Chemistry: electrical current producing apparatus, product, and process

429122000 - CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS

429129000 - Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers)

429142000 - Having plural distinct components

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
429145000 Having defined porosity either functional or by size (i.e., semipermeable, permselective, ionpermeable, microporous, etc.) 100
Entries
DocumentTitleDate
20100015515LAMINATED POROUS FILM AND SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a laminated porous film formed by laminating a heat-resistant resin layer on a porous film made from a polyolefin-based resin containing an ethylene-α-olefin copolymer including a structural unit derived from ethylene and a structural unit derived from one or more kinds of monomers selected from α-olefins having 4 to 10 carbon atoms, wherein a shutdown temperature is 125° C. or lower and a thermal film breakage temperature is 155° C. or higher.01-21-2010
20110195294METHOD FOR MANUFACTURING SEPARATORS, SEPARATORS MANUFACTURED BY THE METHOD AND ELECTROCHEMICAL DEVICES INCLUDING THE SEPARATORS - A method for manufacturing separators includes (S08-11-2011
20100119930Alkaline cell with improved separator - An alkaline cell with improved separator. The separator is formed of two sheets. The two sheets are wound into a tube shape and the bottom edge of the wound separator is folded and heat sealed. The facing surfaces of the two sheets forming the separator body are not glued or bonded together. The two separator sheets may overlap laterally so that a portion of each sheet forms a different portion of the separator outside surface. Alternatively, the separator may be formed of two sheets wherein the first sheet forms an outer layer which completely covers the second sheet. One sheet is preferably composed of a blend of polyvinylalcohol fibers and rayon fibers and the other sheet composed of polyvinylalcohol fibers and wood pulp fibers.05-13-2010
20100075215THIN BATTERY AND A METHOD OF MANUFACTURING A THIN BATTERY - The thin battery of the invention comprises an anode material, a cathode material, two or more separator paper layers there between, and electrolyte. One of the outer separator paper layers has an anode material applied thereon, another separator paper layer being an outer layer on the opposite side having a cathode material applied thereon. The method of the invention for manufacturing such a thin battery is mainly characterized by the steps of wetting a separator paper with an electrolyte solution, applying an anode material on a first separator paper and applying a cathode material on a second separator paper. The separator papers are then combined by pressing them together so that the anode and cathode materials are outmost, respectively in order to form a layered structure. The combined layers are then cut in desired sizes.03-25-2010
20120244413METHOD FOR PRODUCING LITHIUM COMPOSITE METAL OXIDE, LITHIUM COMPOSITE METAL OXIDE, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a method of producing a lithium mixed metal oxide, a lithium mixed metal oxide and a nonaqueous electrolyte secondary battery. The method includes a step of calcining a mixture of one or more compounds of M wherein M is one or more elements selected from the group consisting of nickel, cobalt and manganese, and a lithium compound, in the presence of one or more inactive fluxes selected from the group consisting of a fluoride of A, a chloride of A, a carbonate of A, a sulfate of A, a nitrate of A, a phosphate of A, a hydroxide of A, a molybdate of A and a tungstate of A, wherein A is one or more elements selected from the group consisting of Na, K, Rb, Cs, Ca, Mg, Sr and Ba. The lithium mixed metal oxide contains nickel, cobalt and manganese, has a BET specific surface area of from 3 m09-27-2012
20120244412PERFORATED FILM - The invention relates to a perforated film that has a thickness of less than 20 μm, a tensile strength of 2 N/cm to 40 N/cm, and a perforated surface area of 10% to 90%.09-27-2012
20120244411LITHIUM-CONTAINING METAL OXIDE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a lithium mixed metal oxide, an electrode and a nonaqueous electrolyte secondary battery. The lithium mixed metal oxide is represented by the following formula (A):09-27-2012
20120244410SECONDARY BATTERY, ELECTRONIC DEVICE, ELECTRIC POWER TOOL, ELECTRICAL VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - A secondary battery capable of suppressing resistance rise even after repeated charge and discharge is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode contains titanium-containing lithium composite as an anode active material, and the electrolytic solution contains cyclic disulfonic acid anhydride.09-27-2012
20130040184HIGHLY POROUS SEPARATOR FOIL - The invention relates to a biaxially oriented single- or multilayer porous foil, the porosity of which is generated by transformation of ss-crystalline polypropylene during orientation of the foil. The Gurley value of the foil is <250 s. The invention also relates to a process for producing the foil by using a low transverse stretching velocity for the transverse orientation process.02-14-2013
20130034769LAMINATED POROUS FILM, SEPARATOR FOR NON-AQUEOUS ELECTROLYTE BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a laminated porous film that simultaneously satisfies communication, heat resistance and workability and has excellent properties as a separator for non-aqueous electrolyte secondary batteries. The laminated porous film is characterized in that a heat-resistant layer comprising a filler (a), a resin binder(b), and an extending agent(c) is laminated on at least one side of a porous polyolefin resin film, and in that the air permeability is no more than 2,000 s/100 ml.02-07-2013
20130209860NON-AQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery in which formation of a flame retardant layer formed on the surface of an electrode or the like hardly affects the discharge characteristics is provided. A non-aqueous electrolyte battery 08-15-2013
20130040183ELECTROCHEMICAL CELLS - The present invention relates to electrochemical cells comprising 02-14-2013
20120164513BATTERY SEPARATOR AND METHOD FOR MANUFACTURING THE SAME - The present discloser provides a battery separator, including: a porous hyper-branched polymer which undergoes a closed-pore mechanism at a field effect condition, wherein the field effect condition includes at least one of a temperature being above 150° C., a voltage being 20V, or a current being 6 A; and a porous structure material. The invention also provides a method for manufacturing the battery separator and a secondary battery having the battery separator.06-28-2012
20120164511LITHIUM BATTERY AND ELECTRODE PLATE STRUCTURE - A lithium battery is provided. The lithium battery comprises an positive electrode plate having a first surface, a negative electrode plate having a second surface, a first thermal insulating layer and a separator. The first surface is opposite to the second surface. The thermal insulating layer is disposed on one of the first surface and the second surface. The thermal insulating layer is comprised of an inorganic material, a thermal activation material and a binder. The separator is disposed between the positive electrode plate and the negative electrode plate.06-28-2012
20090123826METHOD OF MAKING A THIN LAYER ELECTROCHEMICAL CELL WITH SELF-FORMED SEPARATOR - A method of forming an electrochemical cell is disclosed. The method comprises contacting a negative pole layer and a positive pole layer one with the other or with an optional layer interposed therebetween. The pole layers and the optional layer therebetween are selected so as to self-form an interfacial separator layer between the pole layers upon such contacting.05-14-2009
20120189897POROUS MEMBRANE FOR SECONDARY BATTERY AND SECONDARY BATTERY - Disclosed is a porous membrane for a secondary battery, which has further improved output characteristics and long-term cycle characteristics when compared with conventional porous membranes. The porous membrane for a secondary battery is used for a lithium ion secondary battery or the like. Specifically disclosed is a porous membrane for a secondary battery, which contains polymer particles A that have a number average particle diameter of 0.4 μm or more but less than 10 μm and a glass transition temperature of 65° C. or more and polymer particles B that have a number average particle diameter of 0.04 μm or more but less than 0.3 μm and a glass transition temperature of 15° C. or less. It is preferable that the polymer particles B have a crystallization degree of 40% or less and a main chain structure that is composed of a saturated structure.07-26-2012
20130065104Bipolar Battery and Plate - A bipolar battery plate is utilized for production of a bipolar battery. The bipolar battery plate includes a frame, a substrate, a conductor, a filler, first and second lead layers, and positive and negative active materials. The substrate is positioned within the frame and includes a plurality of perforations that are sealed by a filler, with the conductor positioned in the perforation and held by the filler. The conductor connects to the plurality of perforations. The first lead layer positioned on one side of the substrate, while the second lead layer positioned on another side of the substrate. The first and second lead layers electrically connected to each other through the filler. The positive active material (PAM) positioned on a surface of the first lead layer, while the negative active material (NAM) positioned on a surface of the second lead layer.03-14-2013
20110229751NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolytic solution. The separator is constituted of a polyolefin microporous membrane constituted of two or more layers of stacked film containing polyethylene and polypropylene, one or both of the surface layers has a polypropylene mixture proportion exceeding 50% by mass and contains inorganic particles, and the nonaqueous electrolytic solution contains a dinitrile compound expressed by CN—(CH09-22-2011
20110135989BATTERY SEPARATOR AND BATTERY USING THE SAME - The present invention relates to a battery separator including: a porous substrate; and a layer of a crosslinked polymer supported on at least one surface of the porous substrate, in which the crosslinked polymer is obtained by reacting (a) a reactive polymer having, in the molecule thereof, a reactive group containing active hydrogen with (b) a polycarbonate urethane prepolymer terminated by an isocyanate group.06-09-2011
20120015230MIXED METAL OXIDE, ELECTRODE, AND SODIUM SECONDARY BATTERY - Disclosed is a mixed metal oxide comprising Na, M01-19-2012
20100248001MIXED METAL OXIDE AND SODIUM SECONDARY BATTERY - Disclosed is a mixed metal oxide which is extremely useful as a positive electrode active material for secondary batteries, while being reduced in the amount of a scarce metal used therein. Also disclosed are a positive electrode for sodium secondary batteries, and a sodium secondary battery. Specifically disclosed is a mixed metal oxide having an α-NaFeO09-30-2010
20110300430SEPARATOR FOR BATTERY, AND NON-AQUEOUS LITHIUM BATTERY - Disclosed is a separator for a battery, which comprises a porous film mainly composed of a polyolefin film, has heat resistance, and can improve battery properties. Specifically disclosed is a separator for a battery, which is characterized by having a layer mainly composed of a polyolefin resin, wherein at least one surface of the separator has an arithmetic average roughness (Ra) of 0.3 μm or more.12-08-2011
20110281150ORGANIC/INORGANIC COMPOSITE POROUS FILM AND ELECTROCHEMICAL DEVICE PREPARED THEREBY - Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.11-17-2011
20090155678SEPARATOR FOR ELECTROCHEMICAL CELL AND METHOD FOR ITS MANUFACTURE - An electrode/separator assembly for use in an electrochemical cell includes a current collector; a porous composite electrode layer adhered to the current collector, said electrode layer comprising at least electroactive particles and a binder; and a porous composite separator layer comprising inorganic particles substantially uniformly distributed in a polymer matrix to form nanopores and having a pore volume fraction of at least 25%, wherein the separator layer is secured to the electrode layer by a solvent weld at the interface between the two layers, said weld comprising a mixture of the binder and the polymer. Methods of making and using the assembly are also described.06-18-2009
20100323233ELECTRIC SEPARATOR, METHOD FOR THE PRODUCTION AND USE THEREOF - The present invention relates to electrical separators and to a process for making them. An electrical separator is a separator used in batteries and other arrangements in which electrodes have to be separated from each other while maintaining ion conductivity for example. The separator is preferably a thin porous insulating material possessing high ion permeability, good mechanical strength and long-term stability to the chemicals and solvents used in the system, for example in the electrolyte of the battery. In batteries, the separator should fully electrically insulate the cathode from the anode. Moreover, the separator has to be permanently elastic and to follow movements in the system, for example in the electrode pack in the course of charging and discharging. This object is achieved by an electrical separator according to the invention, comprising a sheetlike flexible substrate having a multiplicity of openings and having a coating on and in said substrate, said substrate being a polymeric nonwoven and said coating being a porous electrically insulting ceramic coating, said separator being characterized by a thickness of less than 80 μm.12-23-2010
20110293988LEAD-OXIDE BATTERY PLATE WITH NONWOVEN GLASS MAT - Provided is a lead-oxide pasted battery plate comprising a lead alloy grid, lead oxide paste and a nonwoven glass fiber mat. The nonwoven glass mat is comprised of glass fibers having a diameter greater than 10 microns, a binder for the glass fibers, and a third component. The third component can comprise cellulosic fibers, glass micro-fibers, polymeric fibers, fillers or mixtures thereof. The presence of the third component restricts the penetration of the lead oxide paste through the thickness of the mat during the plate pasting operation, thereby keeping the process equipment free from the accumulation of lead oxide paste. The component can then dissolve in the battery acid solution, or work synergistically with the battery separator to deliver electrolyte to the lead oxide plate during the operation of the battery.12-01-2011
20110293989RESIN COMPOSITION, SHEET AND POROUS FILM - Disclosed is a resin composition containing a filler, a high molecular weight polyolefin, and a polyolefin wax having a weight average molecular weight of 700 to 6,000, wherein the resin composition satisfies the following formula (1), assuming that the weight of the ultrahigh molecular weight polyolefin contained in the resin composition is W1, the weight of the polyolefin wax having a weight average molecular weight of 700 to 6,000 is W2, and the intrinsic viscosity of the ultrahigh molecular weight polyolefin is [η]:12-01-2011
20120141858MULTILAYER BATTERY SEPARATOR AND METHOD FOR MANUFACTURING THE SAME - A multilayer battery separator is provided. The multilayer battery separator includes a porous polyethylene (PE) film, and a porous thermal resistant film selected from a group consisting of: a weight ratio of polyvinylidene fluoride (PVDF) and cellulose of 90/10-40/60; a weight ratio of polyvinylidene fluoride and polyethylene glycol (PEG) of 99/1-85/15; and polyimide (PI), and combinations thereof. A method for manufacturing the multilayer battery separator is also provided.06-07-2012
20110143183SEPARATOR FOR BATTERY AND NONAQUEOUS ELECTROLYTE BATTERY USING SAME - A separator for batteries according to the present invention includes a multilayer porous film having a resin porous film containing a thermoplastic resin as a main component and a heat resistant porous layer containing heat resistant particles as a main component, and the heat resistant porous layer has a thickness of 1 to 15 μm, and the 180° peel strength between the resin porous film and the heat resistant porous layer is 0.6 N/cm or more.06-16-2011
20110217584LAMINATED POROUS FILM, SEPARATOR FOR LITHIUM CELL, AND CELL - Provided is a laminated porous film having excellent shutdown characteristics and breakdown characteristics, good tearing strength and dimensional stability, and B activity. The laminated porous film comprises layer A, the main component of which is a polypropylene resin, and layer B which contains a polyethylene resin, and the ratio of the rearing strength (H09-08-2011
20120088145POWDER AND LITHIUM NICKEL MIXED METAL OXIDE - Disclosed is a powder comprising a lithium-containing compound and a nickel-containing mixed metal compound, and satisfying the following requirements of (1) and (2) when the powder is analyzed by plasma emission spectrometry of particles: 04-12-2012
20100112432SEPARATOR - Provided is a separator made of a laminated porous film in which a heat-resistant layer that comprises a heat-resistant resin and a shut-down layer that comprises a thermoplastic resin are laminated, wherein the heat-resistant layer further comprises two or more fillers, and the value of D05-06-2010
20110262796LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY - A lithium secondary battery positive electrode according to the present invention is a lithium secondary battery positive electrode including a positive electrode material mixture layer containing a positive electrode active material and a conductivity enhancing agent on one or both sides of a current collector, wherein the positive electrode active material contains a lithium-containing composite oxide, the conductivity enhancing agent contains carbon fibers having an average fiber length of 10 nm or more and less than 1000 nm and an average fiber diameter of 1 nm or more and 100 nm or less, and the content of the carbon fibers in the positive electrode material mixture layer is 0.25 mass % or more and 1.5 mass % or less.10-27-2011
20090148760BATTERY SEPARATOR STRUCTURES - A multilayer composite sheet for use in a lead-acid battery includes 06-11-2009
20110171513SODIUM SECONDARY BATTERY - The present invention provides a sodium secondary battery. The sodium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution, the separator is composed of a porous laminate film in which a heat resistant porous layer and a porous film are stacked each other, and the heat resistant porous layer is disposed on the negative electrode side.07-14-2011
20100124700ELECTRODE AND SEPARATOR MATERIAL FOR LITHIUM-ION CELLS AND METHODS OF PREPARING THE SAME - A negative electrode for an electrochemical device comprises an active layer which forms a porous outer surface, the outer surface of the active layer being at least partially coated with nanoparticles, and/or an active layer which is at least partially covered by a porous functional layer at least an outer surface whereof is at least partially covered with nanoparticles. Also disclosed is a separator composite material for separating electrodes in an electrochemical device, comprising an essentially self-supporting support layer and a porous functional layer on at least one side of the support layer. An outer surface of the support layer is at least partially coated with nanoparticles on at least one side thereof. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.05-20-2010
20100099022SEPARATOR - A separator having a laminated porous film in which a heat-resistant layer containing a heat-resistant resin and a shut-down layer containing a thermoplastic resin are laminated, in which the heat-resistant layer has a thickness of not less than 1 μm and not more than 10 μm, and the heat-resistant layer further contains a filler containing substantially spherical particles.04-22-2010
20110200863LITHIUM-ION BATTERIES WITH COATED SEPARATORS - A porous polymer sheet or membrane is provided with a thin coating of an electrically non-conductive ceramic composition and the coating conforms to all surfaces, including the pore surfaces, of the membrane. Such a coated membrane serves well, for example, as an intra-cell separator in a lithium ion battery. The coating increases the mechanical properties and thermal stability of the separator in battery operation and retains electrolyte. The coating may be formed by a two-step vapor-phase process in which atoms of one or more metals such as aluminum, calcium, magnesium, titanium, silicon and/or zirconium are deposited in a conformal layer on a workpiece surface. The metal atoms may then be reacted with ammonia, carbon dioxide, and or water to form their respective non-conductive nitrides, carbides, and/or oxides on the surface. The two-step process is repeated as necessary to obtain a ceramic material coating of desired thickness.08-18-2011
20120270090LAMINATED FILM, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a laminated film and a non-aqueous electrolyte secondary battery. The laminated film has a structure in which a porous film having a shutdown function, a heat resistant porous layer containing plate-like inorganic particles and a binder, and a protective porous layer are stacked on each other in this order. The non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and an electrolyte, wherein the separator is the above-mentioned laminated film.10-25-2012
20110171514SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NONAQUEOUS SECONDARY BATTERY - The present invention is to provide a separator that is excellent in heat resistance, shutdown function, flame retardancy and handling property. The separator for a nonaqueous secondary battery of the invention is a separator for a nonaqueous secondary battery that has a polyolefin microporous membrane at least one surface of which is laminated with a heat resistant porous layer containing a heat resistant resin, and is characterized by containing an inorganic filler containing a metallic hydroxide that undergoes dehydration reaction at a temperature of 200 to 400° C.07-14-2011
20130216891LITHIUM BATTERY - A lithium battery including a positive electrode; a negative electrode including a negative active material layer including a first aqueous binder and a second aqueous binder, the first aqueous binder including a monomer unit; and a separator between the positive electrode and the negative electrode, the separator including a base material layer and a polymer layer formed on at least one surface of the base material layer, and the polymer layer including a non-aqueous binder including a monomer unit identical to the monomer unit of the first aqueous binder is disclosed.08-22-2013
20090274955MULTI-LAYER MICROPOROUS POLYOLEFIN MEMBRANE AND BATTERY SEPARATOR - A multi-layer, microporous polyolefin membrane having at least three layers, which comprises first microporous layers made of a polyethylene resin for constituting at least both surface layers, and at least one second microporous layer comprising a polyethylene resin and polypropylene and disposed between both surface layers, the heat of fusion (ΔH11-05-2009
20100136412METHOD FOR PRODUCING LITHIUM-CONTAINING COMPOSITE OXIDE AND NON-AQUEOUS SECONDARY BATTERY - A method for producing a lithium-containing composite oxide represented by General Formula (1):06-03-2010
20120295148ELECTROLYTIC SOLUTION FOR SECONDARY BATTERY, SECONDARY BATTERY, ELECTRONIC APPLIANCE, POWER TOOL, ELECTRIC VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - A secondary battery includes: a positive electrode, a negative electrode, and an electrolytic solution containing a nitrogen-containing aromatic compound, wherein the nitrogen-containing compound contains an aromatic skeleton containing one or two or more aromatic rings and one or two or more nitrogen-containing functional groups bonded to the one or two or more aromatic rings and represented by the following formula (1)11-22-2012
20100136411Prismatic Cell With Outer Electrode Layers Coated On A Single Side - Embodiments of the present invention provide an electrochemical cell including a stack of electrode layers and separator layers. The electrode layers include anode layers and cathode layers disposed in an alternating manner and separated by the separator layers. The two outer electrode layers of the stack are of the same type and are coated with an active material on an inward-facing surface only. The electrochemical cell may include two or more insulating layers disposed at the two ends of the electrode stack, and a pouch enclosing the electrode stack and the insulating layers.06-03-2010
20090169986NON-AQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - In a non-aqueous secondary battery that includes a strip-shaped positive electrode, a strip-shaped negative electrode, a first insulating layer interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, the width of the positive electrode is smaller than the width of the negative electrode, both longitudinal end faces of the positive electrode are coated with a second insulating layer, and the first insulating layer and the second insulating layer are both porous.07-02-2009
20080261107ROBUST METAL FILM ENCAPSULATION - The present invention relates to metal film encapsulation of an electrochemical device. The metal film encapsulation may provide contact tabs for the electrochemical device. The present invention may also include a selectively conductive bonding layer between a contact and a cell structure. The present invention may further include ways of providing heat and pressure resilience to the bonding layer and improving the robustness of the protection for the cell structure.10-23-2008
20110269010SEPARATOR, BATTERY USING THE SAME, METHOD FOR PRODUCING SEPARATOR, MICROPOROUS MEMBRANE, AND METHOD FOR PRODUCING A MICROPOROUS MEMBRANE - A separator includes a porous body, and a particle membrane that is formed on at least one principal surface of the porous body. The particle membrane is made of inorganic particles, and has a void formed therein by the inorganic particles. The particle membrane has a porosity that is non-uniform in the thickness direction thereof.11-03-2011
20110217583SEPARATOR FOR VALVE REGULATED LEAD-ACID BATTERY, AND VALVE REGULATED LEAD-ACID BATTERY - It is an object of the present invention to provide a separator which can improve the valve regulated lead-acid battery both in the pressure lowering prevention effect and the electrolyte stratification prevention effect, and a valve regulated lead-acid battery using the same.09-08-2011
20110206971CERAMIC, FLEXIBLE MEMBRANE PROVIDING IMPROVED ADHESION TO THE SUPPORT FLEECE - The present invention relates to flexible ceramic membranes which, depending on embodiment, are useful as separators for batteries, especially lithium batteries, and also a process for their production.08-25-2011
20090297935IONICALLY CONDUCTIVE MEMBRANES FOR PROTECTION OF ACTIVE METAL ANODES AND BATTERY CELLS - Disclosed are ionically conductive membranes for protection of active metal anodes and methods for their fabrication. The membranes may be incorporated in active metal negative electrode (anode) structures and battery cells. In accordance with the invention, the membrane has the desired properties of high overall ionic conductivity and chemical stability towards the anode, the cathode and ambient conditions encountered in battery manufacturing. The membrane is capable of protecting an active metal anode from deleterious reaction with other battery components or ambient conditions while providing a high level of ionic conductivity to facilitate manufacture and/or enhance performance of a battery cell in which the membrane is incorporated.12-03-2009
20130216892SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND HEAT-SEALABLE INSULATING FILM FOR SECONDARY BATTERY. - A secondary battery includes an outer housing and an electrode body including a positive electrode member, separator member and a negative electrode member stacked in this order wherein the positive electrode member and the negative electrode member are formed from a collector and an active material layer formed to cover one end on the collector, an insulating body in which an insulating material that does not exhibit adhesiveness at room temperature is adhered with an adhesive strength of 1 N/15 mm or greater onto the collector constituting the positive electrode member or the negative electrode member, and a peripheral edge of the positive electrode member or the negative electrode member has a cross-sectional surface including the collector and the insulating body.08-22-2013
20110143182Battery Separator - A battery includes a separator with a trapping layer that traps dissolved metal ions.06-16-2011
20110229750Polyolefin Fibers for Use as Battery Separators and Methods of Making and Using the Same - The present invention is directed to battery separators comprising layers of non-woven, melt-blown polyolefin fibers, and methods of making and using the same.09-22-2011
20110229752BATTERY SEPARATOR AND SECONDARY BATTERY - A polyethylene resin surface is formed on a surface of a nonwoven fabric, which is made of polypropylene resin as a main component material and structured with bonded pieces of the polypropylene resin. The polyethylene resin surface is then subjected to a hydrophilization treatment, such as a radical reaction treatment or a sulfonation treatment. As a result, a secondary battery separator having a high mechanical strength along with a high hydrophilic nature, and a secondary battery using that secondary battery separator are provided.09-22-2011
20100003590ELECTROCHEMICAL DEVICE AND ITS MANUFACTURING METHOD - An electrochemical includes an electrode structure provided with a composite separator having a porous substrate with a plurality of pores and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of electrode active material particles and a binder polymer. The porous coating layer of the composite separator improves thermal stability of the porous substrate and plays a function of electrode active material layer of the electrochemical device. Accordingly, this electrochemical device has excellent stability and good economical efficiency since the electrode structure does not need coating of an electrode active material layer on a surface of a current collector.01-07-2010
20110143181SEPARATOR, METHOD OF MANUFACTURING SEPARATOR, AND LITHIUM SECONDARY BATTERY INCLUDING SEPARATOR - A lithium secondary battery includes a positive electrode plate, a negative electrode plate, and a separator disposed between the positive electrode plate and the negative electrode plate. The separator includes a first porous base material layer, a second porous base material layer and a ceramic layer disposed between the first base material layer and the second base material layer. Since the lithium secondary battery includes the separator having the interposed ceramic layer, the melting and contraction of the separator due to heat are inhibited, thus preventing a short circuit between the positive electrode plate and the negative electrode plate.06-16-2011
20090246612Electrochemical Device - An electrochemical device having an electrode matrix including a multilayer structure laminating positive and negative electrodes with a separator interposed therebetween; wherein at least one of the positive and negative electrodes has a resistance control layer at least at an edge part exposed when the separator thermally shrinks on a surface on the separator side; and wherein the resistance control layer has a resistance value as a total resistance value of the electrode matrix falling in such a range that an estimated internal short circuit current between the positive and negative electrodes is equivalent to 0.09 C to 1 C.10-01-2009
20100261047ELECTROCHEMICAL DEVICE HAVING DIFFERENT KINDS OF SEPARATORS - An electrochemical device includes a plurality of unit cells, each having a first separator and a cathode and an anode positioned at both sides of the first separator, and a continuous single second separator interposed between adjacent unit cells in correspondence with each other in a laminated pattern and arranged to surround each unit cell. The first separator includes a heat-resisting porous substrate having a melt point of 200° C. or above and a first porous coating layer formed on at least one surface of the heat-resisting porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer. The second separator includes a polyolefin porous substrate and a second porous coating layer formed on at least one surface of the polyolefin porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer.10-14-2010
20110117415NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte secondary battery comprises a positive electrode containing a positive electrode active material capable of being doped and dedoped with alkali metal ions and represented by formula A05-19-2011
20100239900BATTERY SEPARATOR AND NONAQUEOUS LITHIUM ION SECONDARY BATTERY HAVING THE SAME - The invention provides a battery separator comprising a porous resin film and a crosslinked polymer supported thereon and having iminodiacetic acid groups in side chains of the polymer chains. The iminodiacetic acid group is preferably represented by the formula09-23-2010
20120141859MULTILAYER POROUS FILM - A multilayer porous film, comprising a porous layer including inorganic particles and a resin binder on at least one surface of a porous film containing a polyolefin resin as a main component, wherein the inorganic particles contain an aluminum silicate compound as a main component.06-07-2012
20100310921SEPARATOR FOR ALKALINE BATTERY, METHOD FOR PRODUCING THE SAME, AND BATTERY - Provided is a separator for alkaline batteries which can not only prevent batteries from internal short circuit by inhibiting the dendrite formation at anode, but also enables to have a low electrical resistance. The separator for alkaline batteries comprises a composite sheet in which a base layer comprising a wet-type nonwoven material formed from alkaline resistant fibers is covered with a nanofiber layer comprising a modified polyvinyl alcohol fiber which has a fiber diameter of 10 to 1000 nm and a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH.12-09-2010
20110008668POWDER FOR POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ACTIVE ELECTRODE ACTIVE MATERIAL, AND SODIUM SECONDARY BATTERY - The present invention provides a positive electrode active material that can suppress the necessity of performing sieving and is suitable for use in secondary batteries, particularly sodium secondary batteries. Also provided is a powder for a positive electrode active material as a raw material for the positive electrode active material. The powder for a positive electrode active material of the present invention comprises Mn-containing particles. In the cumulative particle size distribution on the volume basis of particles constituting the powder, D50, which is the particle diameter at a 50% cumulation measured from the smallest particle, is in the range of from 0.1 μm to 10 μm, and 90 vol % or more of the particles constituting the powder are in the range of from 0.3 times to 3 times D50. The powder for a positive electrode active material comprises Mn-containing particles, and 90 vol % or more of the particles constituting the powder are in the range of from 0.6 μm to 6 μm. The positive electrode active material is a powdery positive electrode active material obtained by calcining a mixture of the powder for positive electrode active material and a sodium compound. The positive electrode for sodium rechargeable batteries comprises the positive electrode active material.01-13-2011
20110111280LITHIUM-ION SECONDARY BATTERY - A lithium-ion secondary battery includes a negative electrode having a negative electrode mixture layer containing a negative electrode active material and a separator. The negative electrode active material contains a carbon material having an R value of Raman spectrum of 0.2 to 0.8 and having an interplanar spacing d05-12-2011
20120034508Battery Separator - A battery includes a separator with a trapping layer that traps dissolved metal ions.02-09-2012
20110244305ELECTROCHEMICAL DEVICES FOR USE IN EXTREME CONDITIONS - An electrochemical device, such as a battery or power source, provides improved performance under stringent or extreme conditions. Such an electrochemical device for use in high temperature conditions may include at least a cathode, a lithium-based anode, a separator, and an ionic liquid electrolyte. This device also may include a current collector and housing that are electrochemically inert with respect to other components of the device. This electrochemical device may operate at temperatures ranging from 0 to 180, 200, 220, 240, and 260° C.10-06-2011
20110123849Rechargeable lithium battery - Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.05-26-2011
20110212357BATTERY, VEHICLE, AND BATTERY-MOUNTING EQUIPMENT - This invention provides a battery comprising a separator, which has a shutdown function and, at the same time, can suppress a lowering in output of the battery, a vehicle with the battery mounted thereon, and a battery mounted equipment. A battery (09-01-2011
20110135988BATTERY SEPARATOR AND BATTERY USING THE SAME - The present invention relates to a battery separator including: a porous substrate; and a layer of a crosslinked polymer supported on at least one surface of the porous substrate, in which the crosslinked polymer is obtained by reacting (a) a reactive polymer having, in the molecule thereof, a first reactive group containing active hydrogen and a second reactive group having cationic polymerizability with (b) a polycarbonate urethane prepolymer terminated by an isocyanate group.06-09-2011
20120189895ELECTRODE STACK FOR A GALVANIC CELL - An electrode stack according to the invention comprises at least a cathode, an anode, and a separator with electrolyte. The cathode, the anode, and the separator are each plate-shaped, respectively. The surface area of the separator is at least as large, as the surface area of the cathode and/or of the anode. The plate-shaped elements of the electrode stack are at least partially connected with each other, by fixation means.07-26-2012
20100055554POSITIVE ELECTRODE ACTIVE MATERIAL POWDER AND POSITIVE ELECTRODE ACTIVE MATERIAL - The present invention provides a powder for a positive electrode active material containing particles containing two or more elements selected from transition metal elements and in the cumulative particle size distribution on the basis of volume of the particles composing the powder, the particle diameter (D50) observed from the finer particle side at 50% accumulation is in the range of 0.1 μm or larger and 10 μm or smaller, and 95% by volume or more of the particles composing the powder exit in the range of 0.3 time or more and 3 times or less as large as D50.03-04-2010
20110076545STACK TYPE BATTERY AND BATTERY MODULE - A plurality of positive electrode plates (03-31-2011
20120202103BATTERY SEPARATOR, METHOD OF MANUFACTURING A BATTERY SEPARATOR, BATTERY, BATTERY PACK, AND ELECTRONIC APPARATUS - A battery separator includes a porous base material and a heat-resistant layer. The porous base material includes a first surface, a second surface opposed to the first surface, and a hole. The hole is formed in the porous base material and causes the first surface and the second surface to communicate with each other. The heat-resistant layer is configured to cover at least the first surface and a surface of the hole. The heat-resistant layer is formed of an inorganic material and deposited by an atomic layer deposition method.08-09-2012
20110256442ELECTRODE MIXTURE, ELECTRODE, AND NONAQUEOUS ELECTROLYTE SECONDARY CELL - The present invention provides an electrode mixture, an electrode and a nonaqueous electrolyte secondary battery. The electrode mixture includes a lithium mixed metal oxide represented by formula (1):10-20-2011
20110052962POROUS FILM, MULTILAYER POROUS FILM COMPRISING THE SAME, AND SEPARATOR - Disclosed is a porous film containing a polyolefin resin and not less than 0.001% by mass but not more than 2% by mass of a fatty acid component having not less than 12 but not more than 24 carbon atoms, which is composed of one or more fatty acids selected from the group consisting of saturated fatty acids, unsaturated fatty acids and metal salts of saturated or unsaturated fatty acids.03-03-2011
20110003191SODIUM SECONDARY BATTERY - The present invention provides a sodium secondary battery having a superior cycling performance as compared with conventional techniques. A sodium secondary battery of the present invention comprises a positive electrode comprising a mixed metal oxide which comprises Na and M01-06-2011
20110135987LITHIUM SECONDARY BATTERY - A lithium secondary battery including: a positive electrode including a positive electrode active material layer; a negative electrode including a negative electrode active material layer; an electrolyte; and an inorganic insulating separator coating layer coated on at least one of the active material layers. The sizes and shapes of the positive electrode active material layer and the negative electrode active material layer are substantially the same, in order to facilitate an arrangement of the positive and negative electrodes.06-09-2011
20100183908CROSSLINKING POLYMER-SUPPORTED POROUS FILM FOR BATTERY SEPARATOR AND USE THEREOF - The present invention relates to a crosslinking polymer-supported porous film for battery separator, including: a porous film; and a crosslinking polymer supported on the porous film, the crosslinking polymer having a plurality of cation-polymerizable functional groups in the molecule thereof and having oxyalkylene groups represented by general formula (I):07-22-2010
20110086257METHOD FOR PRODUCING LITHIUM COMPLEX METAL OXIDE - A method for producing a layered lithium mixed metal oxide according to the present invention comprises a step of calcining, in the presence of an inert flux composed of a chloride, a lithium mixed metal oxide raw material containing a transition metal element and a lithium element so that the molar ratio of the lithium element to the transition metal element may fall within a range of 1 or more and 2 or less.04-14-2011
20100323232MIXED METAL OXIDE AND SODIUM SECONDARY BATTERY - The present invention provides a sodium secondary battery capable of reducing the amount of lithium used, and ensuring a larger discharge capacity maintenance rate when having repeated a charge and discharge, as compared with conventional techniques; and a mixed metal oxide usable as the positive electrode active material therefor. A mixed metal oxide of the present invention comprises Na and M12-23-2010
20100323231POSITIVE ELECTRODE ACTIVE MATERIAL, SODIUM SECONDARY BATTERY, AND PRODUCTION METHOD OF OLIVINE-TYPE PHOSPHATE - Disclosed are a positive electrode active material and a method for producing an olivine-type phosphate. The positive electrode active material comprises an olivine-type phosphate represented by the following formula (I), wherein the maximum peak in an X-ray diffraction pattern obtained using a CuKα ray is the peak of the (031) plane of the olivine-type phosphate and the half-value width of the peak is 1.5° or less: A12-23-2010
20110135990SODIUM SECONDARY BATTERY - Disclosed is a sodium secondary battery. The sodium secondary battery comprises a first electrode and a second electrode comprising a carbonaceous material. The carbonaceous material satisfies one or more requirements selected from the group consisting of requirements 1, 2, 3 and 4. Requirement 1: R value (=ID/IG) obtained by Raman spectroscopic measurement is 1.07 to 3. Requirement 2: A value and σ06-09-2011
20090202898Reactive polymer-carrying porous film and processing for producing the same - It is intended to provide a reactive polymer-supported porous film that is capable of achieving sufficient adhesion between the electrode and the separator; reduced in internal resistance; and excellent in high rate characteristics, the porous film being useful as a battery separator which, after production of the battery, is not melted or broken under a high temperature and functions as a separator having a small heat shrinkage ratio as well as to provide a process for producing batteries using the reactive polymer-supported porous film.08-13-2009
20090197158NONAQUEOUS ELECTROLYTE BATTERY - A nonaqueous electrolyte battery includes a cathode that is placed opposite an anode via a separator, an open circuit voltage in the full charge state is within a range of 4.25 to 6.00 V per a pair of the cathode and the anode, the separator includes a base material layer which includes a polyolefin resin material and a surface layer which is provided at least on the surface at the side of the cathode of the base material layer and includes at least one selected from the group including polyvinylidene fluoride, polytetrafluoroethylene, and polypropylene, and at least one selected from the group including aramid, polyimide, and ceramics is present on the outermost surface of the surface layer.08-06-2009
20090176152MANGANESE DRY BATTERY - A manganese dry battery of the invention includes a positive electrode material mixture including manganese dioxide, a negative electrode zinc can with a lead content equal to or less than 0.03% by weight, and a separator comprising a paper with a paste material applied thereto. The separator contains 0.005 to 0.05 part by weight of bismuth in the form of BiCl07-09-2009
20110189530NONAQUEOUS SECONDARY BATTERY - A nonaqueous secondary battery comprising a pair of electrodes consisting of a positive electrode and a negative electrode, and a separator interposed between the pair of electrodes, wherein the separator is a laminate formed by stacking in sequence a metal layer, a first resin layer and a second resin layer having a thermal shrinkage percentage smaller than a thermal shrinkage percentage of the first resin layer, and the metal layer is opposed to one of the pair of electrodes.08-04-2011
20110189529SODIUM SECONDARY BATTERY - The present invention provides a sodium secondary battery. The sodium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution, the separator is composed of a porous laminate film in which a heat resistant porous layer and a porous film are stacked each other, and the heat resistant porous layer is disposed on the positive electrode side.08-04-2011
20120308871PRODUCTION AND USE OF CERAMIC COMPOSITE MATERIALS BASED ON A POLYMERIC CARRIER FILM - The invention relates to a ceramic composite material (12-06-2012
20100028768POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE USING THE SAME AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A positive electrode active material includes: a complex oxide particle containing at least lithium and one or plural transition metals; and a coating layer provided in at least a part of the complex oxide particle, wherein the coating layer contains at least one element M which is different from the principal transition metal constituting the complex oxide particle and which is selected among elements belonging to the Groups 2 to 13, and at least one element X selected among phosphorus (P), silicon (Si) and germanium (Ge), and the element M and the element X show different distribution from each other in the coating layer.02-04-2010
20120148896MULTI-LAYER ARTICLE OF POLYIMIDE NANOWEB WITH AMIDIZED SURFACE - The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a method comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.06-14-2012
20120148899ELECTROCHEMICAL CELL HAVING A SEPARATOR - Electrochemical cell comprising a positive and a negative elecrode and a layer of an inorganic substance arranged between the electrodes, characterized in that the layer is coated with a polyetherimide on one or both sides.06-14-2012
20100304205HEAT RESISTING SEPARATOR HAVING ULTRAFINE FIBROUS LAYER AND SECONDARY BATTERY HAVING THE SAME - A polyolefin separator having an heat-resistant ultrafine fibrous layer and a secondary battery using the same, in which the separator has a shutdown function, low thermal contraction characteristics, thermal endurance, excellent ionic conductivity, excellent cycling characteristics at the time of battery construction, and excellent adhesion with an electrode. The present N invention adopts a very simple and easy process to form an ultrafine fibrous layer through an electrospinning process, and at the same time, to remove solvent and to form pores. Accordingly, the separator of the present invention is useful particularly for electrochemical devices used in a hybrid electric automobile, an electric automobile, and a fuel cell automobile, requiring high thermal endurance and thermal stability.12-02-2010
20110117414Secondary Battery - A secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed therebetween, a case in which the electrode assembly and an electrolyte are accommodated, and a core member provided at a center portion of the electrode assembly and impregnating an electrolyte to maintain an external shape of the electrode assembly.05-19-2011
20110305940METHOD FOR PRODUCING POROUS LAMINATE AND POROUS LAMINATE - A process for producing a porous laminate having many micropores interconnected in the thickness direction, which comprises: a step in which a laminate is produced which comprises at least three layers comprising an interlayer made of a thermoplastic resin having a hard segment and a soft segment and two nonporous outer layers made of a filler-containing resin and located as outer layers respectively on both sides of the interlayer; a step in which the laminate obtained is impregnated with a supercritical or subcritical fluid and this state is relieved to vaporize the fluid and thereby make the interlayer porous; and a step in which the two nonporous outer layers located respectively on both sides are made porous by stretching.12-15-2011
20110305939LITHIUM COMPOSITE METAL OXIDE AND POSITIVE ELECTRODE ACTIVE MATERIAL - Disclosed is a lithium mixed metal oxide which is useful for a positive electrode active material that is capable of providing a nonaqueous electrolyte secondary battery having more excellent cycle characteristics, in particular, more excellent cycle characteristics during high-temperature operation at 60 DEG C. or the like. Specifically disclosed is a lithium mixed metal oxide represented by the following formula (A). Li12-15-2011
20110305938Electrode layered product for cell and method for making the same - An electrode layered product for a cell includes a first electrode plate having a shape of a strip, a first separator having a shape of a strip, a second separator having a shape of a strip, a second electrode plate having a pectinate, tooth shape, and a third electrode plate having a pectinate, tooth shape. The first separator is stacked on one surface of the first plate. The second separator is stacked on the other surface of the first plate. The second plate is stacked on an opposite side of the first separator from the first plate. The second plate includes tooth sections and a joining section. The third plate is stacked on an opposite side of the second separator from the first plate. The third plate includes tooth sections and a joining section. The first and second separators and the first, second and third plates are bent in a zigzag manner.12-15-2011
20110305937METHOD FOR MANUFACTURING POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY USING SAME - A method for preparing a positive active material for a rechargeable lithium battery includes: a) providing a furnace and a crucible that is included in the furnace; b) putting a mixture of a composite metal precursor and a lithium compound into the crucible; and c) preparing a positive active material for a rechargeable lithium battery by firing the mixture in the crucible, wherein during the process b), the mixture in the crucible is positioned so that a minimum distance from a predetermined position inside the mixture to an exterior of the mixture in the crucible is about 5 cm or less. A rechargeable lithium made by this method is disclosed.12-15-2011
20120148898BATTERY - An exemplary battery is provided in the present invention. The battery includes a current collector, a positive-electrode structure, a separation structure, a negative-electrode structure and a housing. The positive-electrode structure, the separation structure, the negative-electrode structure are encircled in sequence inside of the housing. At least one of the negative-electrode structure and the positive-electrode structure comprises chlorophyll. The battery of the present invention could store hydrogen by the chlorophyll of the positive-electrode structure and/or the negative-electrode structure to generate electricity.06-14-2012
20120148897ELECTROCHEMICAL CELL COMPRISING A MULTI-LAYER ARTICLE OF POLYIMIDE NANOWEB WITH AMIDIZED SURFACE - The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a method comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article.06-14-2012
20120301774INORGANIC/ORGANIC COMPOSITE POROUS SEPARATOR AND ELECTROCHEMICAL DEVICE USING THE SAME - Provided is an inorganic/organic composite porous separator including a porous substrate having pores and an active layer formed on the porous substrate. The active layer contains mixture of binder and inorganic particles. The inorganic/organic composite porous separator of the present invention has desirable anti-oxidation performance, and can prevent the separator from being oxidized in the lithium secondary battery using high voltage anode material. Also provided is a method for manufacturing the inorganic/organic composite porous separator and an electrochemical device using the same.11-29-2012
20100124701LITHIUM-ION SECONDARY BATTERY SEPARATOR AND LITHIUM-ION SECONDARY BATTERY - A lithium-ion secondary battery separator having a porous structure formed by laminating a second polymer layer, a first polymer layer, and a second polymer layer in sequence. The second polymer layer has a melting point higher than that of the first polymer layer. The second polymer layer has a higher molecular part formed on a side in contact with the first polymer layer and a lower molecular part formed on a side farther from the first polymer layer than is the higher molecular part. The higher and lower molecular parts have a weight-average molecular weight ratio (higher molecular part/lower molecular part) of 4 to 19 therebetween.05-20-2010
20110064988LITHIUM SECONDARY BATTERY - A lithium secondary battery includes a cathode, an anode, a separator interposed between the cathode and the anode, and a non-aqueous electrolytic solution obtained by dissolving lithium salt to a non-aqueous solvent. The separator includes a porous substrate having pores; and a porous coating layer located on at least one surface of the porous substrate and having inorganic particles and a binder polymer, the inorganic particles being connected and fixed to each other by means of the binder polymer, the porous coating layer having pores therein formed by interstitial volumes among the inorganic particles. The non-aqueous solvent is a high-viscous non-aqueous solvent having a viscosity of 1.4 cP or above at 25° C. This lithium secondary battery gives improved safety and excellent charging/discharging characteristics since it has the high-viscous non-aqueous solvent and the separator with good wettability against the solvent.03-17-2011
20110318629SEPARATOR FOR LEAD ACID BATTERY - Separators for lead-acid batteries, and lead-acid batteries including the same are provided. The separator includes a first layer made of a rubber material and a second layer made of a polymer material.12-29-2011
20110318630SEPARATOR FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY - The invention intends to provide a separator for lithium ion secondary battery wherein the separator with porous film used for lithium ion secondary battery include binder, which is capable to contribute for improving film smoothness property of the separator and long term cycle property.12-29-2011
20110318631ELECTROCHEMICAL DEVICE - The electrochemical device of the present invention comprises a positive electrode (12-29-2011
20120003525SEPARATOR FOR AN ELECTRICITY STORAGE DEVICE AND METHOD OF MANUFACTURING SAME - The present invention provides a separator for an electricity storage device that is formed by superimposing two or more fiber layers, wherein at least one or more of the fiber layers is a synthetic fiber layer that contains synthetic fibers and a synthetic resin binding agent, and also provides a method of manufacturing the same. Moreover, the present invention provides a separator for an electricity storage device that contains thermoplastic synthetic fibers A, heat-resistant synthetic fibers B, natural fibers C, and a synthetic resin-based binding agent, and also provides a method of manufacturing the same.01-05-2012
20120003524METAL OXIDE ULTRAFINE FIBER-BASED COMPOSITE SEPARATOR WITH HEAT RESISTANCE AND SECONDARY BATTERY USING SAME - An ultrafine fiber-based composite separator comprising a fibrous porous body which comprises ultrafine metal oxide/polymer composite fibers, or ultrafine metal oxide fibers and a polymer resin coating layer formed on the surface thereof, the ultrafine fibers being continuously randomly arranged and layered, and obtained by electrospinning a metal oxide precursor sol-gel solution or a mixture of a metal oxide precursor sol-gel solution and a polymer resin solution, wherein the surface of the metal oxide/polymer composite fibers has a uniform mixing composition of the metal oxide and the polymer resin, in which the separator has a heat shrinkage rate at 150˜250° C. of 10% or less and does not break down due to melting at a temperature of 200° C. or lower, has low heat shrinkage rate, and superior heat resistance and ionic conductivity, being capable of providing improved cycle and power properties when used in manufacturing a battery.01-05-2012
20120009459PROCESS FOR PRODUCING LITHIUM COMPOSITE METAL OXIDE HAVING LAYERED STRUCTURE - A method of producing a layered structure lithium mixed metal oxide, including a step of calcining a lithium mixed metal oxide raw material containing a transition metal element and a lithium element in a molar ratio of the lithium element to the transition metal element of 1 or more and 2 or less, in the presence of an inactive flux containing one or more compounds selected from the group consisting of a carbonate of M, a sulfate of M, a nitrate of M, a phosphate of M, a hydroxide of M, a molybdate of M, and a tungstate of M, wherein M represents one or more elements selected from the group consisting of Na, K, Rb, Cs, Ca, Mg, Sr and Ba.01-12-2012
20120015231LITHIUM COMPOSITE METAL OXIDE AND POSITIVE ELECTRODE ACTIVE MATERIAL - A lithium mixed metal oxide, shown by the following formula (A): Lix(Mn1-y-z-dNiyFezMd)O2 (A) wherein M is one or more elements selected from the group consisting of Al, Mg, Ti, Ca, Cu, Zn, Co, Cr, Mo, Si, Sn, Nb and V; x is 0.9 or more and 1.3 or less; y is 0.3 or more and 0.7 or less; z is more than 0 and 0.1 or less, and d is more than 0 and 0.1 or less. A positive electrode active material, including the lithium mixed metal oxide. A positive electrode, including the positive electrode active material. A nonaqueous electrolyte secondary battery, including the positive electrode.01-19-2012
20120015228SEPARATOR INCLUDING POROUS COATING LAYER, METHOD FOR MANUFACTURING THE SEPARATOR AND ELECTROCHEMICAL DEVICE INCLUDING THE SEPARATOR - A separator includes a non-woven fabric substrate having pores, fine thermoplastic powder located inside the pores of the non-woven fabric substrate, and a porous coating layer disposed on at least one surface of the non-woven fabric substrate. The fine thermoplastic powder has an average diameter smaller than that of the pores and a melting point lower than the melting or decomposition point of the non-woven fabric substrate. The porous coating layer includes a mixture of inorganic particles and a binder polymer whose melting point is higher than the melting or decomposition point of the fine thermoplastic powder. In the porous coating layer, the inorganic particles are fixedly connected to each other by the binder polymer and the pores are formed by interstitial volumes between the inorganic particles. Previous filling of the large pores of the non-woven fabric substrate with the fine thermoplastic powder makes the porous coating layer uniform.01-19-2012
20120015229LAMINATED SEPARATOR, POLYOLEFIN MICROPOROUS MEMBRANE, AND SEPARATOR FOR ELECTRICITY STORAGE DEVICE - Disclosed is a laminated separator including a first polyolefin microporous layer and a second polyolefin microporous layer which is laminated on the first polyolefin microporous layer and which is different from the first polyolefin microporous layer, wherein at least one of the first microporous layer and the second microporous layer includes an inorganic particle having a primary particle size of 1 nm or more and 80 nm or less.01-19-2012
20120115008POLYOLEFIN MICROPOROUS MEMBRANE, SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, NON-AQUEOUS SECONDARY BATTERY AND METHOD OF PRODUCING POLYOLEFIN MICROPOROUS MEMBRANE - A polyolefin microporous membrane, the membrane having, when measured by DSC, a degree of crystallinity of from 65 to 85%, a lamellar crystal/crystal ratio of from 30 to 85%, a crystal length of from 5 nm to 50 nm and an amorphous length of from 3 nm to 30 nm, and a polyolefin microporous membrane, the membrane having, when measured by X-ray diffractometry, crystal size of from 12.5 nm to 13.5 nm and a degree of crystallinity of from 64 to 68%.05-10-2012
20110165449BATTERY SEPARATOR AND METHOD FOR PRODUCING THE SAME, AND LITHIUM ION SECONDARY BATTERY AND METHOD OF PRODUCING THE SAME - A battery separator (07-07-2011
20110020692SEPARATOR FOR METAL HALIDE BATTERY - It is an object of the present invention to provide a separator for a metal halide battery which can maintain a low bromine permeability for a long duration and can maintain battery performance for a long duration. The present invention provides a separator for a metal halide battery having a bromine diffusion coefficient after 240 hours of less than 4.2×1001-27-2011
20120156545High energy storage capacitor by embedding tunneling nano-structures - In an All-Electron Battery (AEB), inclusions embedded in an active region between two electrodes of a capacitor provide enhanced energy storage. Electrons can tunnel to/from and/or between the inclusions, thereby increasing the charge storage density relative to a conventional capacitor. One or more barrier layers is present in an AEB to block DC current flow through the device. The AEB effect can be enhanced by using multi-layer active regions having inclusion layers with the inclusions separated by spacer layers that don't have the inclusions. The use of cylindrical geometry or wrap around electrodes and/or barrier layers in a planar geometry can enhance the basic AEB effect. Other physical effects that can be employed in connection with the AEB effect are excited state energy storage, and formation of a Bose-Einstein condensate (BEC).06-21-2012
20110091762ELECTRODE ASSEMBLY FOR SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME AND SECONDARY BATTERY WITH THE SAME - An electrode assembly for a secondary battery, a method of manufacturing the electrode assembly and a secondary battery having the electrode assembly. The electrode assembly includes a plurality of electrode members arranged in a stacked shape along a baseline extending in one direction and a separation unit separating two adjacent electrode members. The separation unit includes three or more separators having a same winding center.04-21-2011
20120251869ELECTROCHEMICAL DEVICE WITH IMPROVED CYCLE CHARACTERISTICS - Disclosed is an electrochemical device. The electrochemical device includes: (a) a composite separator including a porous substrate, a first porous coating layer coated on one surface of the porous substrate, and a second porous coating layer coated on the other surface of the porous substrate; (b) an anode disposed to face the first porous coating layer; and (c) a cathode disposed to face the second porous coating layer. The first and second porous coating layers are each independently composed of a mixture including inorganic particles and a binder polymer. The first porous coating layer is thicker than the second porous coating layer. The electrochemical device has good thermal stability and improved cycle characteristics.10-04-2012
20120251868LAMINATED FILM AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a laminated film and a non-aqueous electrolyte secondary battery. The laminated film is a laminated film in which a porous film having a shutdown function, a heat resistant porous layer consisting of an inorganic filler and a binder, and a protective porous layer are stacked on each other in this order. The non-aqueous electrolyte secondary battery is a non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and an electrolyte, wherein the separator is the above-mentioned laminated film.10-04-2012
20120164512LITHIUM BATTERY AND ELECTRODE PLATE STRUCTURE - A lithium battery is provided. The lithium battery comprises a first plate, a second plate and a separator. The first plate is composed of a plurality of electrode material layers stacked on one another. At least one of the electrode material layers comprises a thermal activation material. The separator is disposed between the first plate and the second plate.06-28-2012
20120164514SEPARATOR FOR NON-AQUEOUS BATTERIES, NON-AQUEOUS BATTERY USING SAME, AND PRODUCTION METHOD FOR SEPARATOR FOR NON-AQUEOUS BATTERIES - Provided is a separator for non-aqueous batteries not only having shutdown property but also achieving both higher output and short-circuit resistance. The separator comprising a laminate comprising: a low melting-point polymer fiber layer (A) having a melting point of 100 to 200° C., the low melting-point polymer fiber layer (A) comprising nanofibers having a fiber diameter of 1000 nm or smaller and formed from the low melting-point polymer; and a heat-resistant polymer fiber layer (B) positioned on the low melting-point polymer fiber layer (A) and comprising a high melting-point polymer having a melting point over 200° C. or a heat infusible polymer, the heat-resistant polymer fiber layer (B) comprising a mixture of nanofibers having a fiber diameter of 1000 nm or smaller and non-nanofibers having a fiber diameter over 1000 nm and both formed from heat-resistant polymer.06-28-2012
20100248002Microporous Multilayer Membrane, System And Process For Producing Such Membrane, And The Use Of Such Membrane - The invention relates to a multilayer microporous membrane comprising polyethylene and polypropylene and having an improved balance of properties including improved thickness variation in at least one planar direction. The invention also relates to a system and method for producing such a membrane, the use of such a membrane as a battery separator film, and batteries containing such a membrane.09-30-2010
20120129032THERMALLY BOUND NON-WOVEN MATERIAL - The invention relates to a thermally bound non-woven material containing a low-shrinkage dual-component core-sheath fiber consisting of a crystalline polyester core and a crystalline polyester sheath which has a melting point at least 10° C. lower than the core, the heat-shrinkage characteristic of said fiber being less than 10% at 170° C.05-24-2012
20120129034POROUS FILM, BATTERY SEPARATOR, AND BATTERY - A porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, in which the number of branches per 1000 carbon atoms that constitute the main chain of the polyolefin wax is 15 or less; a porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, and which does not substantially contain a component that melts at a temperature of 60° C. or lower; a laminated porous film which comprises one of the porous films and a heat-resistance porous layer laminated on at least one surface of the porous film; and a separator for batteries, which comprises the porous film or the laminated porous film.05-24-2012
20120129033POWDERY MATERIAL AND POSITIVE ELECTRODE MIXTURE - In accordance with the present invention, a powdery material and a positive electrode mixture for providing a nonaqueous electrolyte secondary battery capable of exhibiting a higher output under high current rate conditions are provided. The powdery material according to the present invention comprises a positive electrode active material powder having an average particle diameter of from 0.05 μm to 1 μm and two or more types of graphite powder wherein the average particle diameters of the two or more types of the graphite powder are different from each other and each graphite powder has an average particle diameter of from 0.01 μm to 20 μm. The positive electrode mixture according to the present invention comprises the powdery material, a binder, and a solvent.05-24-2012
20100209757NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a nonaqueous electrolyte, and a separator. The positive electrode includes a lithium composite oxide having an average composition represented by the following formula (1)08-19-2010
20120219841LITHIUM ION CELL DESIGN APPARATUS AND METHOD - A spray module for depositing an electro-active material over a flexible conductive substrate is provided. The spray module comprises a first heated roller for heating and transferring the flexible conductive substrate, a second heated roller for heating and transferring the flexible conductive substrate, a first spray dispenser positioned adjacent to the first heated roller for depositing electro-active material onto the flexible conductive substrate as the flexible conductive substrate is heated by the first heated roller, and a second spray dispenser positioned adjacent to the second heated roller for depositing electro-active material over the flexible conductive substrate as the flexible conductive substrate is heated by the second heated roller.08-30-2012
20120219842PROTECTED LITHIUM ELECTRODES HAVING TAPE CAST CERAMIC AND GLASS-CERAMIC MEMBRANES - Alkali (or other active) metal battery and other electrochemical cells incorporating active metal anodes together with aqueous cathode/electrolyte systems. The battery cells have a highly ionically conductive protective membrane adjacent to the alkali metal anode that effectively isolates (de-couples) the alkali metal electrode from solvent, electrolyte processing and/or cathode environments, and at the same time allows ion transport in and out of these environments. Isolation of the anode from other components of a battery cell or other electrochemical cell in this way allows the use of virtually any solvent, electrolyte and/or cathode material in conjunction with the anode. Also, optimization of electrolytes or cathode-side solvent systems may be done without impacting anode stability or performance. In particular, Li/water, Li/air and Li/metal hydride cells, components, configurations and fabrication techniques are provided.08-30-2012
20120214043Lithium sulfur battery - A lithium sulfur battery comprising an electrolyte solvent which comprises at least one fluorosubstituted compound is described. Preferred fluorosubstituted compounds which are predominantly solvents are notably selected from the group consisting of fluorosubstituted carboxylic acid esters, fluorosubstituted carboxylic acid amides, fluorosubstituted fluorinated ethers, fluorosubstituted carbamates, fluorosubstituted cyclic carbonates, fluorosubstituted acyclic carbonates, fluorosubstituted ethers, perfluoroalkyl phosphoranes, fluorosubstituted phosphites, fluorosubstituted phosphates, fluorosubstituted phosphonates, and fluorosubstituted heterocycles. Monofluoroethylene carbonate, cis-difluoroethylene carbonate, trans-difluoroethylene carbonate, 4,4-difluoroethylene carbonate, trifluoroethylene carbonate, tetrafluoroethylene carbonate, 4-fluoro-4-methyl-1,3-dioxolane-2-one, 4-fluoro-4-ethyl-1,3-dioxolane-2-one, 2,2,2-trifluoroethyl-methyl carbonate, 2,2,2-trifluoroethyl-fluoromethyl carbonate are preferred. The solvent may further comprise a non-fluorinated solvent, e.g., ethylene carbonate, a dialkyl carbonate, or propylene carbonate. Use of such fluorinated compound as additive for such batteries and specific electrolyte solutions.08-23-2012
20120315530ELECTRODE MIXTURE, ELECTRODE, AND LITHIUM SECONDARY BATTERY - An electrode mixture containing a lithium mixed metal oxide having a BET specific surface area of 2 to 30 m12-13-2012
20120135290OLIVINE-BASED POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY USING SAME - Disclosed is an olivine-based positive active material for a rechargeable lithium battery and a rechargeable lithium battery using the same, wherein the olivine-based positive active material for a rechargeable lithium battery is represented the following Formula 1.05-31-2012
20120135289POLYOLEFIN MICROPOROUS MEMBRANE AND SEPARATOR FOR LITHIUM ION BATTERY - A polyolefin microporous membrane that may serve as a separator for a lithium ion battery is a single-layer or laminated structure and includes a film that forms a surface layer and contains organosilicone particles.05-31-2012
20090274954POROUS FILM AND LAMINATED POROUS FILM - There is provided a porous film, comprising a polymer having a thermal decomposition initiation temperature of 200° C. or more and a raw material monomer thereof, wherein a ratio of the raw material monomer is 0.05% by weight or more and 5% by weight or less based on the total weight of the polymer and the raw material monomer; and a laminated porous film, wherein the porous film and a porous film containing a thermoplastic resin are laminated.11-05-2009
20110206972POWER STORAGE DEVICE SEPARATOR - Provided is a power storage device separator that is realized in the form of a heat-resistant, solvent-resistant, and dimensionally stable thin film. Also provided is a power storage device separator that can be realized in the form of a thin film which has excellent ion permeability and low resistance, which makes short-circuiting between electrodes and self-discharging difficult to occur, and in addition, which has excellent durability even after long periods of use under high temperature environments in the presence of organic solvents and ionic solutions.08-25-2011
20120177975STACKED BATTERY AND METHOD OF PRODUCING THE SAME - A stacked battery includes a square battery element in which a tabular positive electrode, a separator and a tabular negative electrode are laminated, wherein: one side of the battery element is a terminal connection section pulled-out surface, which is provided on both the positive and negative electrodes and where a plate-like positive-electrode terminal connection section and a plate-like negative-electrode terminal connection are both pulled out; projection surfaces, which are generated by vertically projecting the positive-electrode terminal connection section and the negative-electrode terminal connection section onto surfaces extending from the positive and negative electrodes, do not cross each other; a surface of the positive electrode and a surface of the negative electrode, which are facing each other, are different in area; each electrode is disposed so that an entire projection portion, which is generated by projecting the small-area electrode onto a surface of a large-area electrode that faces the small-area electrode, is positioned on the large-area electrode; on a separator, a bumping section is provided to limit movements of positive and negative electrodes as a positive-electrode end surface and a negative-electrode end surface hit the bumping section; and as for the bumping section, separators are joined by a crease or joining section of adjacent separators among separators disposed on electrode surfaces.07-12-2012
20120177974NON-AQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery according to the present invention is a non-aqueous electrolyte battery including a positive electrode, a negative electrode, a separator and a non-aqueous electrolyte, wherein aluminum silicate or a derivative thereof is contained in a location that can come into contact with the non-aqueous electrolyte in the battery. In the non-aqueous electrolyte battery, it is preferable that at least one of the separator, the positive electrode, the negative electrode and the non-aqueous electrolyte contains aluminum silicate or a derivative thereof.07-12-2012
20120282513CATHODIC ELECTRODE AND ELECTROCHEMICAL CELL - A cathodic electrode includes at least one carrier having at least one active material applied or deposited thereon, wherein the active material includes a mixture made of a lithium/nickel/manganese/cobalt mixed oxide (NMC), which is not present in a spinel structure, and a lithium manganese oxide (LMO) in a spinel structure. An electrochemical cell includes said cathodic electrode and a separator includes at least one porous ceramic material.11-08-2012
20130183569ALKALINE BATTERY SEPARATOR AND ALKALINE BATTERY USING SEPARATOR - Provided are an alkaline battery separator and an alkaline battery including the separator. The separator includes at least a coarse layer and a dense layer denser than the coarse layer. The coarse layer contains an alkaline-resistant cellulose fiber having a freeness value of 350 to 650 ml as a whole in the proportion of 25 to 65% by weight. The alkaline-resistant cellulose fiber includes at least two kinds of alkaline-resistant cellulose fibers having different freeness with each other. The difference in freeness value between the alkaline-resistant cellulose fibers having the highest and lowest freeness values is 300 to 700 ml. The dense layer contains an alkaline-resistant cellulose fiber which as a whole has a freeness value of 0 to 400 ml. The separator has a maximum pore size of 65 μm or smaller, and a liquid absorption capacity of 5 g/g or higher.07-18-2013
20120082883ELECTRODE MIX, ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode mixture comprising a lithium nickel manganese composite metal oxide having an average particle diameter of 1 μm or less, an electrically conductive material and an overcharge inhibition material. The electrode mixture in which the overcharge inhibition material is an aromatic compound. The electrode mixture in which the overcharge inhibition material is one or more members selected from the group consisting of an aramid, a polyether, a polysulfone and a polyethersulfone. An electrode comprising the electrode mixture. A nonaqueous electrolyte secondary battery comprising a positive electrode, a negative electrode capable of being doped and dedoped with lithium ions, a separator and a nonaqueous electrolytic solution, wherein the positive electrode is the electrode described above.04-05-2012
20120189896ELECTRODE SEPARATOR - The present invention provides a separator for use in an alkaline electrochemical cell comprising a QA polymer material, wherein the separator is substantially resistant to oxidation by silver oxide.07-26-2012
20120189898POROUS MEMBRANE FOR A SECONDARY BATTERY AND A SECONDARY BATTERY - Disclosed is a porous membrane used for a secondary battery, such as lithium-ion secondary battery, wherein strength is improved and break is difficult to occur while maintaining lithium-ion conductivity. The porous membrane for a secondary battery comprising a binder for the porous membrane and a nonconductive particle, wherein the binder for the porous membrane is a polymer particle having a hetero phase structure, in which internal layer is a polymer wherein vinyl monomer components are polymerized and outer layer is a polymer wherein monomer components containing a hydrophilic functional group are polymerized. The hydrophilic functional group is at least one selected from the group consisting sulfonic acid group, carboxyl group, hydroxyl group and epoxy group.07-26-2012
20120258351ELECTRODE ACTIVE MATERIAL, ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides an electrode active material, an electrode and a non-aqueous electrolyte secondary battery. The electrode active material contains the following powder (A) and powder (B):10-11-2012
20120258350Binder for Separator of Non-Aqueous Electrolyte Battery Comprising 2-Cyanoethyl Group-Containing Polymer and Separator and Battery Using the Same - Object of the invention is to provide a binder for a separator which can be comprised by a non-aqueous electrolyte battery with improved battery properties and heat resistance; the separator comprising the binder; and the non-aqueous electrolyte battery comprising the separator. More specifically, provided is a binder for a separator of a non-aqueous electrolyte battery, the separator comprising a 2-cyanoethyl group-containing polymer having bis-cyanoethyl ether content of 0.5% by weight or less as an impurity.10-11-2012
20120258349Binder for Separator of Non-Aqueous Electrolyte Battery Comprising 2-Cyanoethyl Group-Containing Polymer and Separator and Battery Using the Same - An object of the invention is to provide a binder for a separator which can be comprised by a non-aqueous electrolyte battery with improved heat resistance, a separator comprising the binder, and a non-aqueous electrolyte battery comprising the separator. More specifically, provided are a binder for a separator of a non-aqueous electrolyte battery comprising at least a 2-cyanoethyl group-containing polymer having a molecular weight distribution (Mw/Mn), which is a ratio of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn), of 6 or less, the weight-average molecular weight (Mw) of 50,000 to 1,000,000, and 30% by weight or less of a low molecular weight portion having a molecular weight of 30,000 or less.10-11-2012
20120231323LAMINATED POROUS FILM, SEPARATOR FOR BATTERY, AND BATTERY - Disclosed is a laminated porous film which has both gas permeability and heat resistance and can exhibit excellent smoothness and excellent pin extraction properties when used as a separator for a battery. The laminated porous film is characterized by having a heat-resistant layer laminated on at least one surface of a polyolefin resin porous film, wherein the heat-resistant layer comprises a filler and a resin binder, and wherein the surface of the heat-resistant layer has a static friction coefficient of 0.45 or less, a gas permeability degree of 2000 sec/100 ml or less and a tensile elastic modulus of 400 to 1000 MPa when the film is stretched in the lengthwise direction at a stretching rate of 3%.09-13-2012
20120231322Positive active material for rechargeable lithium battery, method of manufacturing the same and rechargeable lithium battery using the same - A positive active material for a rechargeable lithium battery, a method of manufacturing the same, and a rechargeable lithium battery using the same, the positive active material including a secondary particle formed of a plurality of primary particles, the primary particles being made of a metal compound capable of intercalating/deintercalating lithium; and a coating layer on a surface of the secondary particle in an island arrangement, the coating layer including a metal oxide, wherein the secondary particle includes pores formed by the primary particles, the pores including a surface pore on the surface of the secondary particle and an internal pore inside the secondary particle, and the metal oxide of the coating layer fills a portion of the surface pore of the secondary particle.09-13-2012
20120231321INTEGRAL BI-LAYER SEPARATOR-ELECTRODE CONSTRUCTION FOR LITHIUM-ION BATTERIES - A porous bi-layer separator composed of a first layer with a contacting array of non-conducting particles overlaid with a second layer of a microporous polymer layer, may be fabricated on the electrode surface of the anode of a lithium-ion battery to form an integral electrode-separator construction. The bi-layer separator may prevent development of a direct electronic path between the anode and cathode of the battery while accommodating electrolyte solution and enabling passage of lithium ions. Such an integral separator should be mechanically robust and tolerant of elevated temperatures. Exemplary bi-layer separators may be fabricated by sequential deposition of solvent-containing slurries and polymer solutions with subsequent controlled evaporation of solvent. The elevated temperature performance of lithium-ion battery cells incorporating such integral electrode-bi-layer separators was demonstrated to exceed the performance of similar cells using commercial and experimental single layer polymer separators.09-13-2012
20120328929SEPARATOR FOR ELECTROCHEMICAL DEVICE, ELECTROCHEMICAL DEVICE USING SAME, AND METHOD FOR PRODUCING THE SEPARATOR FOR ELECTROCHEMICAL DEVICE - A separator for an electrochemical device of the present invention includes, on at least one side of a resin porous film including a thermoplastic resin as a main component, a heat-resistant porous layer including heat-resistant fine particles as a main component. The resin porous film has a surface tension (wetting index) A of 35 mN/m or less, the heat-resistant porous layer is made from a heat-resistant porous layer forming composition containing a water-based solvent and having a surface tension B of less than 29 mN/m, and a relationship between the surface tension (wetting index) A and the surface tension B satisfies A>B.12-27-2012
20110003192MIXED METAL OXIDE AND SODIUM SECONDARY BATTERY - The present invention provides a sodium secondary battery capable of reducing the amount used of a scarce metal element such as lithium and cobalt and moreover, ensuring a larger discharge capacity after repeating charge/discharge as compared with conventional techniques, and a mixed metal oxide usable as the positive electrode active material therefor. The mixed metal oxide of the present invention comprises Na, Mn and M01-06-2011
20120263994LITHIUM ION SECONDARY BATTERY, ELECTRONIC DEVICE, ELECTRIC POWER TOOL, ELECTRICAL VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - A lithium ion secondary battery includes a cathode and an anode being opposed to each other with a separator in between, and an electrolytic solution. One or more of the cathode, the anode, and the separator contain an organic silicon compound including a compound having a polysilsesquioxane skeleton.10-18-2012
20120321930ELECTRODE ASSEMBLY AND SECONDARY BATTERY USING THE SAME - There are provided an electrode assembly and a secondary battery using the same, in which a stack-type secondary battery includes an edge portion of at least one of the electrode plates to be adhered to a corresponding edge portion of the separator, so that it is possible to inhibit contraction of the separator. An electrode assembly comprises a first electrode plate; a second electrode plate; and a separator interposed between the first and second electrode plates. In the electrode assembly, the first and second electrode plates and the separator are stacked such that an edge portion of at least one of the first and second electrode plates is adhered to an edge portion of the separator.12-20-2012
20110039145POROUS FILM FOR SEPARATOR, BATTERY SEPARATOR, BATTERY ELECTRODE, AND MANUFACTURING METHODS THEREFOR, AND LITHIUM SECONDARY BATTERY - The present invention provides a lithium secondary battery using a separator including a porous film formed by binding inorganic oxide particles together with a binder. The inorganic oxide particles are treated so that an amount of alkali metal elements eluted therefrom when they are immersed in ion exchange water is reduced to 1000 ppm or less. As a result, it is possible to provide a lithium secondary battery with a high degree of reliability, whose characteristics deteriorate less when it is used or stored for an extended period.02-17-2011
20110045338SEPARATOR HAVING POROUS COATING LAYER AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME - A separator includes a porous substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer, wherein the binder polymer includes a first polyvinylidene fluoride-based copolymer having solubility of 25 weight % or more with respect to acetone at 350 C; a second polyvinylidene fluoride-based copolymer having solubility of 10 weight % or less with respect to acetone at 350 C; and a polymer having a cyano group. This separator decelerates deterioration of life span of an electrochemical device, and prevents disintercalation of inorganic particles in the porous coating layer, thereby improving safety of the electrochemical device.02-24-2011
20110236744FIBROUS SEPARATION MEMBRANE FOR SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF - Disclosed herein is a fibrous separation membrane for secondary batteries, comprising: a support layer containing cellulose fiber; and a first heat-resistant resin layer applied on one side of the support layer.09-29-2011
20110236743ELECTROLYTE SEPARATOR AND METHOD OF MAKING THE ELECTROLYTE SEPARATOR - An electrolyte separator structure is provided. The electrolyte separator structure comprises a graded integral structure, wherein the structure comprises an ion-conducting first ceramic at a first end and an electrically insulating second ceramic at a second end, wherein the difference in the coefficient of thermal expansion of the ion-conducting first ceramic and the electrically insulating second ceramic is less than or equal to about 5 parts per million per degrees Centigrade, and wherein at least one of the first ceramic or the second ceramic comprises a strengthening agent. Method of making the ion-separator structure is provided. Electrochemical cells comprising the ion-separator structure and method of making the electrochemical cell using the ion-separator structure are also provided.09-29-2011
20100233523HEAT RESISTING ULTRAFINE FIBROUS SEPARATOR AND SECONDARY BATTERY USING THE SAME - A heat-resisting ultrafine fibrous separator of the present invention is prepared by an electrospinning process, formed of ultrafine fibers of heat-resisting polymer resin having a melting point more than 1800 C or not having the melting point, or ultrafine fibers of polymer resin capable of swelling in an electrolyte, together with the ultrafine fibers of heat-resisting polymer resin. Also, polyolefine fine particles providing a shutdown function are dispersed in the heat-resisting resin or the polymer resin capable of swelling in the electrolyte. The heat-resisting ultrafine fibrous separator of the present invention has the shutdown function, low thermal contraction, thermal endurance, excellent ionic conductivity and excellent adhesive property with an electrode, so a battery having excellent cycling characteristics, and having high-energy density and high capacity can be prepared.09-16-2010
20120276438TRANSITION METAL PHOSPHATE, PRODUCTION PROCESS THEREOF, POSITIVE ELECTRODE, AND SODIUM SECONDARY BATTERY - The present invention provides a transition metal phosphate and a production process thereof, a positive electrode, and a sodium secondary battery. The transition metal phosphate contains sodium (Na), phosphorus (P) and a transition metal element and having a BET specific surface area of 1 m11-01-2012
20120321933SECONDARY BATTERY WITH IMPROVED STORAGE CHARACTERISTICS AND METHOD FOR MANUFACTURING THE SAME - Provided is a secondary battery comprising a separator having an inorganic layer wherein active sites of inorganic particles in the inorganic layer are modified into non-reactive sites. Use of the separator leads to improvements in wettability of an electrolyte and thermoelectric stability and storage characteristics of the secondary battery. Provided is also a method of manufacturing the same secondary battery.12-20-2012
20120321932LAMINATION TYPE SECONDARY BATTERIES - The present invention provides a lamination type secondary battery in which separators are prevented from becoming wrinkled and are free from laminating dislocation. An aspect of the present invention is a lamination type secondary battery in which a plurality of planar positive electrodes (12-20-2012
20120321931SECONDARY BATTERY - A secondary battery includes at least one first electrode plate, at least one second electrode plate and separators. The first electrode plate has a first active material layer intermittently coated in the length direction thereof and a first non-coating portion on which the first active material layer is not coated. The first non-coating portion is folded. The second electrode plate is alternately positioned with the first electrode plate, and has a second active material layer intermittently coated in the length direction thereof and a second non-coating portion on which the second active material layer is not coated. The second non-coating portion is folded. The separators are positioned between the respective first and second electrode plates. The secondary battery further includes first and second electrode tabs that respectively clamp at least one of the first non-coating portions and at least one of the second non-coating portions.12-20-2012
20120100411CELL SEPARATOR MANUFACTURING METHOD - The present invention provides a method of manufacturing a cell separator in which a protective layer mainly composed of at least one type of granular ceramic is formed on a surface of a porous sheet base material. The method includes preparation of a water-based paste obtained by mixing a solid material containing the granular ceramic and a binder with an aqueous solvent to which at least one type of alcohol has been added, and formation of a protective layer in a state in which the alcohol has been eliminated by coating the prepared water-based paste onto a surface of the porous sheet base material, and further includes formation of the protective layer so that the solids content in the protective layer is higher than the solids content in the water-based paste by an amount of elimination of the alcohol, and is at least 55% by mass.04-26-2012
20120288742NON-AQUEOUS SECONDARY BATTERY - The non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, the negative electrode contains a negative electrode active material containing a graphitic carbon material and a composite in which a carbon coating layer is formed on a surface of a core material containing Si and O as constituent elements, the composite has a carbon content of 10 to 30 mass %, the composite has an intensity ratio I11-15-2012
20130011715ELECTRODE ASSEMBLY FOR ELECTROCHEMICAL DEVICE AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME - Disclosed is an electrode assembly having a structure in which a plurality of unit cells are bonded to one or both surfaces of a first separator whose length is greater than width and are stacked in a zigzag pattern or wound sequentially. The first separator includes a first porous electrode adhesive layer, to which electrodes of the unit cells are adhered, formed at one surface thereof to which the unit cells are bonded. The first porous electrode adhesive layer includes a mixture of inorganic particles and a binder polymer. Each of the unit cells includes a second separator including second porous electrode adhesive layers, to which electrodes of the unit cell are adhered, formed at both surfaces thereof. Each of the second porous electrode adhesive layers includes a mixture of inorganic particles and a binder polymer. Further disclosed is an electrochemical device including the electrode assembly.01-10-2013
20130017429Separator And Electrochemical Device Comprising The Same - A separator may include (A) a porous substrate having pores, and (B) a porous coating layer formed on at least one surface of the porous substrate and made from a mixture of inorganic particles and a binder polymer, and the binder polymer may contain a copolymer of (a) a first monomer unit with at least one of an amine group and an amide group at a side chain, and (b) a second monomer unit of (meth)acrylate with an alkyl group having 1 to 14 carbon atoms. The porous coating layer of the separator may have a high packing density, thereby easily forming a thin film battery without hindering safety, and may have good adhesive strength with the porous substrate, thereby preventing detachment of the inorganic particles in the porous coating layer during assembly of an electrochemical device.01-17-2013
20130017430POLYOLEFIN RESIN POROUS FILM AND BATTERY SEPARATORAANM Terakawa; ToruAACI ShigaAACO JPAAGP Terakawa; Toru Shiga JPAANM Yamada; TakeyoshiAACI ShigaAACO JPAAGP Yamada; Takeyoshi Shiga JPAANM Usami; YasushiAACI ShigaAACO JPAAGP Usami; Yasushi Shiga JP - As an object of the present invention, to provide a polyolefin resin porous film fulfilling high continuity, excellent dimensional stability and shutdown function which closes the pores sensitively and completely in a temperature range of 120 to 140° C. without closing the pores at less than 120° C. The present invention relates to a polyolefin resin porous film having at least one layer each of a layer comprising as the main component a polypropylene resin composition (A) and a layer comprising as the main component a polyethylene resin composition (B) fulfilling the condition (i) the melting point of the polyethylene resin composition (B) is 130° C. or higher, and the condition (ii) the melt flow rate (MFR) of the polyethylene resin composition (B) is 2.0 to 15 g/10 minutes.01-17-2013
20110159347SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING THE SAME - A separator 06-30-2011
20110159346LAMINATED POROUS FILM FOR SEPARATOR - Disclosed is a laminated porous film for a separator of a battery that, while having excellent air permeation performance which contributes to electric performance, has a shutdown property which is one of properties important from the viewpoint of ensuring safety. The laminated porous film is characterized in that the laminated porous film comprises layer A formed of a porous layer composed mainly of a polypropylene resin and layer B formed of a porous layer composed mainly of a polyethylene resin, has a β-activity, and has an electric resistance of not more than 10Ω at 25° C. and an electric resistance of not less than 100Ω after heating at 135° C. for 5 seconds and/or an air permeability of not more than 1000 sec/100 ml at 25° C. and an air permeability of not less than 10000 sec/100 ml after heating at 135° C. for 5 seconds.06-30-2011
20110159345ELECTRODE ACTIVE MATERIAL AND METHOD FOR PRODUCING SAME - Disclosed are an electrode active material and a method for producing an electrode active material. The method for producing an electrode active material comprises the following steps (i), (ii) and (iii). (i) An aqueous solution containing M is brought into contact with a precipitant, thereby obtaining a precipitate, wherein M represents at least two elements selected from the group consisting of metal elements other than alkali metal elements. (ii) The precipitate is mixed with a sodium compound, thereby obtaining a mixture. (iii) The mixture is calcined.06-30-2011
20130143095LAMINATED POROUS FILM, SEPARATOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A laminated porous film, where a coating layer (layer II) containing a filler (a), a resin binder (b) and an adhesive agent (c) is laminated on at least one surface of a polyolefin resin porous film (layer I), is provided. The adhesion between the polyolefin resin porous film that serves as a base film and the coating layer is high. The laminated porous film has heat resistance and exhibits excellent properties when used as a separator for a non-aqueous electrolyte secondary battery.06-06-2013
20130101888BATTERY SEPARATOR AND BATTERY - Provided are a battery separator with which a battery with improved safety can be formed, and a battery including the separator. The battery separator of the present invention includes a multilayer porous film including at least a resin porous film (I) and a heat-resistant porous layer (II) predominantly composed of heat-resistant fine particles. The battery separator shuts down at a temperature of 100 to 150° C. and at a speed of 50 Ω/min·cm04-25-2013
20130101886LITHIUM SECONDARY BATTERY - In one aspect, a lithium secondary battery that includes a positive electrode including a high-voltage positive active material; and a separator is provided. The high voltage positive active material can have a discharge plateau voltage of greater than or equal to about 4.6V with respect to a Li counter electrode, and the separator can include a porous substrate having a porosity of about 40% to about 60%.04-25-2013
20130101885METHOD FOR MANUFACTURING SEPARATOR, SEPARATOR MANUFACTURED BY THE METHOD AND METHOD FOR MANUFACTURING ELECTROCHEMICAL DEVICE INCLUDING THE SEPARATOR - A method for manufacturing a separator includes (S04-25-2013
20130101887SEPARATOR FOR VALVE REGULATED LEAD-ACID BATTERY, AND VALVE REGULATED LEAD-ACID BATTERY - A separator for a valve regulated lead-acid battery comprises a paper sheet made by a wet papermaking process, mainly made of glass microfibers, wherein the separator is a structure having a three-layer laminated structure which comprises two thin-fiber layers and one thick-fiber layer, wherein the two thin-fiber layers cover both surfaces of the thick-fiber layer in the thicknesswise direction of the separator to constitute the three-layer laminated structure, wherein each of the thin-fiber layers is made of glass fibers having an average fiber diameter of 0.4 to 1.0 μm as the glass microfibers and has an average pore diameter of 3.5 μm or less, and the thick-fiber layer is made of glass fibers having an average fiber diameter of 1.3 to 4.0 μm as the glass microfibers and has an average pore diameter which is 4.0 μm or more and which is 1.5 times or more that of the thin-fiber layer, wherein the average fiber diameter of the glass fibers in the all layers of the separator is 1.2 μm or more, and the thickness ratio of the thin-fiber layers to the thick-fiber layer in the all layers of the separator is 10/90 to 50/50. In the valve regulated lead-acid battery, both the improvement of the compressive force lowering prevention and the improvement of the electrolyte stratification prevention can be achieved, improving the movement property of the electrolyte within the separator.04-25-2013
20130130091ELECTRICITY SUPPLY ELEMENT AND CERAMIC SEPARATOR THEREOF - An electricity supply element and the ceramic separator thereof are provided. The ceramic separator is adapted to separate two electrode layers of the electricity supply element for permitting ion migration and electrical separation. The ceramic separator is made of ceramic particulates and the adhesive. The adhesive employs dual binder system, which includes linear polymer and cross-linking polymer. The adhesion and heat tolerance are enhanced by the characteristic of the two type of polymers. The respective position of the two electrode layers are maintained during high operation temperature to improve the stability, and battery performance. Also, the ceramic separator enhances the ion conductivity and reduces the possibility of the micro-short to increase practical utilization.05-23-2013
20130130090TRANSITION METAL COMPOSITE HYDROXIDE AND LITHIUM COMPOSITE METAL OXIDE - Provided are a transition metal mixed hydroxide comprising an alkali metal other than Li, SO05-23-2013
20130157106LITHIUM METAL POWDER-CARBON POWDER COMPOSITE ANODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM METAL SECONDARY BATTERY COMPRISING THE SAME - Provided are an anode in which lithium metal powder and carbon powder are physically mixed with each other to form a composite and the composite is applied as an anode layer, and a lithium metal secondary battery including the anode. The anode of the present invention may suppress the formation of lithium dendrites and the change in volume of cells generated in a rechargeable battery which uses a lithium metal anode and significantly improve the cycle life-span of a lithium metal secondary battery by physically mixing lithium metal particles and carbon particles having an equivalent average particle diameter with each other to be applied as an anode layer.06-20-2013
20110223464Separator Systems for Batteries - A battery cell is presented. The battery cell includes an anode, a cathode spaced from and operatively associated with the anode, an electrolyte operatively associated with the anode and the cathode. A layered separator includes a plurality of separator material layers disposed between the anode and cathode. The plurality of separator material layers includes a first layer and a second layer. The first layer is characterized by a first value of a physical property and the second layer is characterized by a second value of the physical property.09-15-2011
20130149587Separator Having Porous Coating Layer And Electrochemical Device Having The Same - The present invention relates to a separator comprising a porous substrate; and a porous coating layer formed on at least one surface of the porous substrate and comprising a mixture of first inorganic particles coated with a coupling agent on the surface thereof, second inorganic particles coated with a coupling agent on the surface thereof and a binder polymer, the first inorganic particles having an average diameter of 1 to 10 μm and the second inorganic particles having an average diameter of 50 to 500 nm. In accordance with the present invention, a separator having a porous coating layer comprising two kinds of inorganic particles which are coated with a coupling agent is manufactured to minimize a mechanochemical reaction, thereby inhibiting the production of unnecessary substances, and to easily introduce functional particles.06-13-2013
20130149588ELECTROCHEMICAL CELLS COMPRISING CHELATE LIGANDS - The present invention relates to electrochemical cells comprising 06-13-2013
20130149589ELECTROCHEMICAL CELLS COMPRISING A NITROGEN-CONTAINING POLYMER - The present invention relates to electrochemical cells comprising 06-13-2013
20130130092SEPARATOR WITH INCREASED PUNCTURE RESISTANCE - A separator with a main part which is made of nonwoven material, and is provided with a coating. The coating contains filler particles, cellulose, and flexible organic binder particles. The filler particles and flexible organic binder particles are connected to each other by the cellulose. Such a separator exhibits high permeability with increased mechanical stability. The cellulose of the separator contains cellulose derivatives that have a chain length of at least 100 repeating units, preferably a chain length of at least 200 repeating units.05-23-2013
20090098449Microporous polyolefin membrane, and method of producing the same - The present invention provides a microporous polyolefin membrane of high permeability and novel structure, and also provides a method of producing the same, wherein its average pore size is gradually decreases from at least one membrane surface towards its center. The method of producing the microporous polyolefin membrane comprises the steps of extruding the solution, composed of 10 to 50 weight % of (A) a polyolefin having a weight-average molecular weight of 5×105 or more or (B) a composition containing this polyolefin and 50 to 90 weight % of a solvent, into a gel-like formed article and removing the solvent therefrom, wherein a treatment step with a hot solvent is incorporated.04-16-2009
20100285348MULTILAYER POROUS MEMBRANE AND PRODUCTION METHOD THEREOF - The present invention provides a multilayer porous membrane having both high safety and practicality, especially as a separator for a non-aqueous electrolyte battery and comprising a porous layer containing an inorganic filler and a resin binder on at least one surface of a polyolefin resin porous membrane, wherein the porous layer simultaneously satisfies the following (A) to (C): 11-11-2010
20120258348Binder for Separator of Non-Aqueous Electrolyte Battery Comprising 2-Cyanoethyl Group-Containing Polymer and Separator and Battery Using the Same - Provided is a binder used for a heat-resistant porous layer which is comprised by a separator; the separator which comprises the binder and which is comprised by a non-aqueous electrolyte battery with improved stability; and the non-aqueous electrolyte battery comprising the separator. More specifically, provided is a binder for a separator of a non-aqueous electrolyte battery, the binder comprising at least a 2-cyanoethyl group-containing polymer having storage elasticity of 100 Pa or more in a mixed liquid of specified cyclic carbonate ester, specified chain carbonate ester and lithium phosphate hexafluoride.10-11-2012
20130157107SEPARATORS UTILIZED IN LITHIUM BATTERIES - In an embodiment of the disclosure, a separator utilized in a lithium battery is provided. The separator includes a non-woven polyester support, a porous layer of polyvinylidene fluoride (PVDF) or its derivatives formed on the non-woven polyester support, a layer of UV-curing or thermal-curing polymers formed on top of the porous layer of polyvinylidene fluoride (PVDF) or its derivatives.06-20-2013
20130157108LITHIUM COMPOSITE METAL OXIDE AND METHOD FOR PRODUCING SAME - The present invention provides a non-aqueous electrolyte secondary battery capable of exhibiting high discharge capacity maintenance rate at a high current rate, a lithium composite metal oxide useful therefor, and a method for producing the lithium composite metal oxide. This lithium composite metal oxide comprises Ni, Mn, Co, and Fe, and the BET specific surface area thereof is 3 m06-20-2013
20130122347POWER STORAGE DEVICE AND MANUFACTURING METHOD THEREFOR - A power storage device having: a laminated body formed by providing a separator layer between a first electrode which is one of a cathode and an anode and a second electrode which is the other electrode; an electrolyte; and a package which houses the laminated body and the electrolyte. At least two first electrode composite sheets are included which are each obtained by integrating a first collector electrode, a first electrode active material layer provided on one principal surface of the first collector electrode, and a separator layer covering at least part of the one principal surface, and the other principal surface of the first collector electrode of one first electrode composite sheet out of the at least two first electrode composite sheets is opposed to, and bonded to, the other principal surface of the first collector electrode of the other first electrode composite sheet.05-16-2013
20110311855Methods and systems for making separators and devices arising therefrom - The invention provides solutions to the problems and needs stated above by providing battery separators that are inexpensive and easy to produce, provide superior performance over traditional separators, and provide robust safety. Towards those ends, the invention provides, in one aspect, the invention provides for a battery electrode comprising: an electrode having a surface, the electrode comprising: a plurality of active material particles; and, a plurality of electrically conductive particles, wherein the active material particles are capable of reversibly storing ions; a separator layer upon the electrode surface, the separator layer having top and bottom surfaces, the bottom surface facing each electrode surface, the separator layer comprising: a plurality of organic polymer particles, each particle having a gross cross sectional dimension between 0.1 μm and 250 μm and comprising a plurality of organic polymer chains, wherein at least some of the organic polymer chains are covalently cross-linked to each other; and, a polymeric binder, wherein the plurality of organic polymer particles are embedded in the polymeric binder.12-22-2011
20130189561REINFORCING MATERIAL FOR BATTERY CELL AND BATTERY CELL INCLUDING THE SAME - In one aspect, a battery cell including: an electrode assembly, wherein the electrode assembly includes a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate; electrode tabs connected to the electrode plate and the second electrode plate, and extending from one side of the electrode assembly; a case for sealing the electrode assembly and an electrolyte; and a reinforcing material disposed in at least a region between the electrode assembly and the case, and comprising ceramic material and a polymer gel is provided.07-25-2013
20120021273SODIUM ION BATTERY - Disclosed is a sodium ion battery comprising a positive electrode, a negative electrode, and a sodium ion nonaqueous electrolyte, wherein the negative electrode comprises a negative electrode active material and a negative electrode current collector made of aluminum or aluminum alloy. Also disclosed is use of the negative electrode current collector made of aluminum or aluminum alloy as a negative electrode current collector of a sodium ion secondary battery.01-26-2012
20120028101MICROPOROUS MEMBRANES AND METHODS FOR PRODUCING AND USING SUCH MEMBRANES - A microporous membrane comprising layers, wherein at least one layer comprises a first polymer having a Tm in the range of 115.0° C. to 130.0° C. and an Mw of from 5.0×1002-02-2012
20130196208LAMINATED POROUS FILM, SEPARATOR FOR BATTERY, AND BATTERY - The purpose is to provide a laminated porous film having shutdown characteristics, which are important in terms of ensuring safety, while also having excellent air permeation performance, which contributes to electrical performance, when used a separator for a battery. The present invention is a laminated porous film characterized by comprising: a porous film layer having a thickness of 10 um or more, the main component thereof being a thermoplastics resin composition having a crystal-melting peak temperature of 150-250° C.; and a nonwoven fiber layer having a fiber diameter of 1 um or less, the main component thereof being a thermoplastic resin composition having a crystal-melting peak temperature of 100° C. to less than 150° C.; the air permeability of the laminated porous film being 10-10,000 s/100 mL.08-01-2013
20130202944LITHIUM SECONDARY BATTERY - Disclosed is a lithium secondary battery that includes a separator including a coating layer including an inorganic compound, a polymer and an organic/inorganic bonding silane compound formed from an organic/inorganic bonding silane compound having a first reactive functional group; and an electrode contacting the coating layer, and including an active material and a binder formed from a binder having a second reactive functional group, wherein the first reactive functional group is reactive with the second reactive functional group, and the lithium secondary battery includes a chemical bond generated by reacting the first reactive functional group with the second reactive functional group.08-08-2013
20120088144SEPARATOR HAVING POROUS COATING LAYER AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME - A separator includes a porous substrate having a plurality of pores, and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a plurality of filler particles and a binder polymer. The filler particles include electrode active material particles that are electrochemically oxidized and reduced. The binder polymer includes a copolymer having (a) a first monomer unit with a contact angle to water of 0 to 49° and (b) a second monomer unit with a contact angle to water of 50 to 130°. This separator is useful for an electrochemical device, particularly a lithium secondary battery. This separator ensures improved thermal stability and increased capacity of the electrochemical device. Also, inorganic particles in the porous coating layer formed on the porous substrate are not disintercalated due to excellent peeling resistance of the porous coating layer while the electrochemical is assembled.04-12-2012

Patent applications in class Plural layers

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