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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

429209000 - Electrode

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DocumentTitleDate
20130045418METHOD FOR MANUFACTURING GRAPHENE-COATED OBJECT, NEGATIVE ELECTRODE OF SECONDARY BATTERY INCLUDING GRAPHENE-COATED OBJECT, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE - To form graphene to a practically even thickness on an object having an uneven surface or a complex surface, in particular, an object having a surface with a three-dimensional structure due to complex unevenness, or an object having a curved surface. The object and an electrode are immersed in a graphene oxide solution, and voltage is applied between the object and the electrode. At this time, the object serves as an anode. Graphene oxide is attracted to the anode because of being negatively charged, and deposited on the surface of the object to have a practically even thickness. A portion where graphene oxide is deposited is unlikely coated with another graphene oxide. Thus, deposited graphene oxide is reduced to graphene, whereby graphene can be formed to have a practically even thickness on an object having surface with complex unevenness.02-21-2013
20110177389ELECTRODE ASSEMBLY AND SECONDARY BATTERY INCLUDING THE SAME - An electrode assembly and a secondary battery including the electrode assembly are disclosed. The electrode assembly includes a first electrode, a second electrode, and a separator disposed between the first and second electrodes. A film is disposed on at least one edge of at least one of the first and second electrodes.07-21-2011
20120202115ANODE ACTIVE MATERIAL, ANODE, BATTERY, AND METHOD OF MANUFACTURING ANODE - A battery that has a higher capacity and superior charge and discharge efficiency is provided. The battery includes a cathode, an anode, and an electrolyte. The anode has an anode active material layer provided on an anode current collector, and the anode active material layer contains a spherocrystal graphitized substance of mesophase spherule provided with a fine pore as an anode active material.08-09-2012
20100081052NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTRODE USED FOR SECONDARY BATTERY, AND METHOD OF MANUFACTURING ELECTRODE - A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H04-01-2010
20110195307NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes a positive electrode (08-11-2011
20110195306NANOSCALE ION STORAGE MATERIALS INCLUDING CO-EXISTING PHASES OR SOLID SOLUTIONS - Nanoscale ion storage materials are provided that exhibit unique properties measurably distinct from their larger scale counterparts. For example, the nanoscale materials can exhibit increased electronic conductivity, improved electromechanical stability, increased rate of intercalation, and/or an extended range of solid solution. Useful nanoscale materials include alkaline transition metal phosphates, such as LiMPO08-11-2011
20120183851LITHIUM SECONDARY BATTERY AND POSITIVE ELECTRODE FOR THE BATTERY - The lithium secondary battery positive electrode provided by the present invention has a positive electrode collector and a positive active material layer formed on the collector. The positive active material layer is composed of a matrix phase containing at least one particulate positive active material and at least one binder, and an aggregate phase dispersed in the matrix phase, constituted by aggregation of at least one particulate positive active material and containing substantially no binder.07-19-2012
20120183850POSITIVE ELECTRODE MIXTURE, POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed are: a positive electrode mixture which provides a nonaqueous electrolyte secondary battery that is capable of exhibiting high output at high current rate; and a positive electrode. Specifically disclosed is a positive electrode mixture which contains a positive electrode active material powder, a conductive agent, a binder and a solvent. The positive electrode active material powder is composed of particles having an average particle diameter of 0.05-1 μm (inclusive) and has a tap density of 0.8-3.0 g/cm07-19-2012
20120183849NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - According to one embodiment, a non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode spaced apart from the positive electrode, and a non-aqueous electrolytic solution. The negative electrode includes a collector, and a negative electrode layer formed on one or both surfaces of the collector and containing an active material having a potential of 0.5 V or more and 2 V or less based on metallic lithium at the insertion and the desorption of lithium. Metallic iron is formed on the surface of the negative electrode layer in an amount of 10 to 80% per unit area.07-19-2012
20120183848BINDER FOR SECONDARY BATTERY EXHIBITING EXCELLENT ADHESION FORCE - Provided is a binder for secondary battery electrodes comprising polymer particles obtained by polymerizing (a) a (meth)acrylic acid ester monomer; (b) at least one monomer selected from the group consisting of an acrylate monomer, a vinyl monomer and a nitrile monomer; and (c) a (meth)acrylamide monomer and an unsaturated monocarbonic acid monomer, with two or more cross-linking agents with different molecular weights. Based on the combination of specific components, the binder basically improves stability of an electrode in the process of fabricating the electrode, thus providing secondary batteries with superior cycle properties.07-19-2012
20120177990ELECTRODE PLATE, SECONDARY BATTERY, AND METHOD FOR PRODUCING THE ELECTRODE PLATE - An electrode plate includes a current collector plate and an active material layer formed thereon. The active material layer includes, as a binder, a plurality of binders having different glass transition points (Tg) from each other. A ratio (A07-12-2012
20130084496POWER STORAGE DEVICE - Provided are an electrode for a power storage device having much better charge/discharge characteristics and a power storage device using the electrode. A plurality of cavities is provided in a surface of an active material layer over a current collector. A graphene covering the active material layer facilitates rapid charge/discharge and prevents breakdown of the current collector caused by charge/discharge. With improved charge/discharge characteristics, an electrode for a power storage device which does not easily deteriorate and a power storage device using the electrode can be provided.04-04-2013
20130084495POWER STORAGE DEVICE - Provided is a power storage device in which charge/discharge capacity is high, charge/discharge can be performed at high speed, and deterioration in battery characteristics due to charge/discharge is small. The power storage device includes a negative electrode including an active material including a plurality of prism-like protrusions. A cross section of each of the plurality of prism-like protrusions, which is perpendicular to the axis of each protrusion, is a polygonal shape or a polygonal shape including a curve, such as a cross shape, an H shape, an L shape, an I shape, a T shape, a U shape, or a Z shape. The active material including the plurality of prism-like protrusions may be covered with graphene.04-04-2013
20130078512LITHIUM SECONDARY BATTERY - An objective of the present invention is to provide a lithium secondary battery which can achieve a higher capacity and a longer life without reduction in a lower voltage in the battery. In the present invention, a compound represented by general formula (I) described below is used as a cathode active material, and a compound represented by general formula (II) described below is used as an anode active material,03-28-2013
20130078514CONDENSED POLYCYCLIC AROMATIC COMPOUND, PRODUCTION PROCESS OF SAME, AND POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY CONTAINING SAME - Provided is a condensed polycyclic aromatic compound, having superior lithium ion responsivity and is suitable for lithium ion secondary battery applications, a production process thereof, a positive electrode active material containing that condensed polycyclic aromatic compound, and a positive electrode for a lithium ion secondary battery provided therewith, and further provided is a lithium ion secondary battery, having high capacity and superior cycling adaptability, that has the positive electrode as a constituent thereof.03-28-2013
20130078511NEGATIVE ELECTRODE PASTE, NEGATIVE ELECTRODE AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a negative electrode paste that is used to manufacture a negative electrode of a non-aqueous electrolyte secondary battery including: (A) a silicon-based negative electrode active material; (B) a binder containing at least one of a polyimide resin and a polyamide-imide resin; and (C) an ionic liquid. As a result, there is provided a negative electrode paste that can suppress an entire negative electrode from curling when a negative electrode paste is coated on a current collector and dried, and can produce a negative electrode having excellent cycle characteristics and large battery capacity.03-28-2013
20130078513THREE-DIMENSIONAL MICROBATTERY HAVING A POROUS SILICON ANODE - An electrical energy storage device (03-28-2013
20120244435NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY - To provide a negative electrode for lithium-ion secondary battery, negative electrode which has good cyclability by suppressing the active material from coming off or falling down from the current collector.09-27-2012
20120244433BATTERY ELECTRODE PRODUCTION METHOD - The electrode production method provided by the present invention includes a step of mixing microbubbles 09-27-2012
20120244432MIXED CATHODE ACTIVE MATERIAL HAVING IMPROVED POWER CHARACTERISTICS AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided are a mixed cathode active material including layered structure lithium manganese oxide expressed as Chemical Formula 1 and a second cathode active material having a plateau voltage profile in a range of 2.5 V to 3.3 V, and a lithium secondary battery including the mixed cathode active material. The mixed cathode active material and the lithium secondary battery including the same may have improved safety and simultaneously, may be used in an operating device requiring the foregoing battery by widening a state of charge (SOC) range able to maintain power more than a required value by allowing the second cathode active material to complement low power in a low SOC range.09-27-2012
20120244431ELECTRODE FOR NON-AQUEOUS ELECTROLYTE BATTERY, AND NON-AQUEOUS ELECTROLYTE BATTERY USING THE ELECTRODE - An electrode for a non-aqueous electrolyte battery has a current collector; and an electrode active material layer formed on the current collector, the electrode active material layer containing an electrode active material and carboxymethylcellulose. The weight of the electrode active material layer is at 250 g/m09-27-2012
20120244428NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - A negative electrode for a rechargeable lithium battery, including a negative active material layer including a polymer binder including a repeating unit represented by the following Chemical Formula 1 or the following Chemical Formula 2 and a Si-based negative active material; and a current collector supporting the negative active material layer, is provided:09-27-2012
20130084494SEPARATOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The separator for non-aqueous electrolyte secondary batteries according to the present invention includes at least a resin (A) having a crosslinked structure. The resin having the crosslinked structure is obtained by applying energy rays to at least an oligomer that is capable of being polymerized by irradiation with energy rays, and the resin (A) has a glass transition temperature higher than 0° C. and lower than 80° C. The separator for non-aqueous electrolyte secondary batteries according to the present invention can be produced using a method of the present invention including the steps of applying a separator-forming composition containing an oligomer and a solvent to a base substrate, forming a resin (A) by irradiation with energy rays, and forming pores by drying a coating film after the resin (A) has been formed. Furthermore, the non-aqueous electrolyte secondary battery of the present invention includes the separator for non-aqueous electrolyte secondary batteries according to the present invention.04-04-2013
20130084497NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK AND VEHICLE - A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains a lithium compound and a negative electrode current collector supporting the lithium compound. A log differential intrusion curve obtained when a pore size diameter of the negative electrode is measured by mercury porosimetry has a peak in a pore size diameter range of 0.03 to 0.2 μm and attenuates with a decrease in pore size diameter from an apex of the peak. A specific surface area (excluding a weight of the negative electrode current collector) of pores of the negative electrode found by mercury porosimetry is 6 to 100 m04-04-2013
20130040196ELECTROCHEMICAL ELEMENT - It is an object of the present invention to provide an electrochemical element which has a high capacity and is low in cost. The electrochemical element of the present invention is an electrochemical element including an electrode for an electrochemical element, wherein a current collector of positive electrode and/or a current collector of negative electrode is a metal porous body having continuous pores and a mixture containing an active material is filled into the continuous pores.02-14-2013
20130040195ELECTRODE USING THREE-DIMENSIONAL NETWORK ALUMINUM POROUS BODY, AND NONAQUEOUS ELECTROLYTE BATTERY, CAPACITOR AND LITHIUM-ION CAPACITOR WITH NONAQUEOUS ELECTROLYTIC SOLUTION, EACH USING THE ELECTRODE - In an electrode according to the present invention including a three-dimensional network aluminum porous body as a base material, the electrode is a sheet-shaped electrode, and a cell of the three-dimensional network aluminum porous body has an elliptic shape having a minor axis in the thickness direction of the electrode in a cross section parallel to the longitudinal direction and thickness direction of the electrode, and a cell of the three-dimensional network aluminum porous body has an elliptic shape having a minor axis in the thickness direction of the electrode in a cross section parallel to the width direction and thickness direction of the electrode. The electrode is preferably obtained by subjecting the three-dimensional network aluminum porous body to at least a current collecting lead welding step, an active material filling step and a compressing step.02-14-2013
20130157131ELECTRICALLY CONDUCTIVE LAYER COATED ALUMINUM MATERIAL AND METHOD FOR MANUFACTURING THE SAME - Provided are an electrically conductive layer coated aluminum material having properties which can withstand long term use; and a method for manufacturing the electrically conductive layer coated aluminum material. The electrically conductive layer coated aluminum material includes: an aluminum material (06-20-2013
20130045417NON-AQUEOUS ELECTROLYTE LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery provided by the present invention has a positive electrode having a current collector and a positive electrode composite layer provided on the current collector. The current collector contains a metal element A as a main component thereof. The positive electrode composite layer contains a two-phase compound containing lithium as a positive electrode active material. The positive electrode composite layer also contains as an additive a compound having a metal element B, in a composition thereof, that has a higher ionization tendency than the metal element A.02-21-2013
20130029221ELECTRODE FOR AN ALKALINE ACCUMULATOR - The invention relates to a composition for electrodes comprising a material M selected from a nickel-based hydroxide and a hydrogen-fixing alloy, and a pentavalent niobium oxide Nb01-31-2013
20130029222POSITIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY COMPRISING THAT POSITIVE ELECTRODE - To provide a sulfur-system positive electrode for lithium-ion battery, sulfur-system positive electrode which is good in the cyclability and the other characteristics, and a lithium-ion secondary battery including that positive electrode.01-31-2013
20130029220POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A positive electrode for a rechargeable lithium battery including a current collector and a positive active material layer disposed on the current collector, a method of manufacturing the positive electrode, and a rechargeable lithium battery including the positive electrode. Here, the positive active material layer includes a positive active material and a coating layer on the surface of the positive active material, wherein the coating layer is formed of a coating layer composition including carbon nano particles, polyvinylpyrrolidone, and polyvinylidene fluoride.01-31-2013
20120164529Electrode For Lithium Ion Batteries - An electrode for lithium ion batteries, the electrode having a metal film which is inert to lithium ions and having a plurality of silicon nanowires protruding from the film, which are arranged on at least one flat side of the film, wherein sections of the nanowires are enclosed by the metal film.06-28-2012
20090305134Electrode Assembly Having Stable Lead-Tap Joint and Electrochemical Cell Containing Them - Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, electrode leads are located at one-side ends of the stacked electrode tabs such that the electrode leads are electrically connected to the electrode tabs, and the electrode leads, joined to the electrode tabs, have rounded ends. An electrochemical cell including the electrode assembly is also disclosed.12-10-2009
20130052530ELECTRICAL STORAGE DEVICE ELECTRODE BINDER COMPOSITION, ELECTRICAL STORAGE DEVICE ELECTRODE SLURRY, ELECTRICAL STORAGE DEVICE ELECTRODE, AND ELECTRICAL STORAGE DEVICE - An electrode binder composition that is used to produce an electrode used for an electrical storage device, includes (A) a polymer, (B) a carboxylic acid or a salt thereof, and (C) a liquid medium, and has a concentration of the carboxylic acid or a salt thereof (B) of 20 to 1000 ppm.02-28-2013
20130052529PARTICULATE MIXTURE, ACTIVE MATERIAL AGGREGATE, CATHODE ACTIVE MATERIAL, CATHODE, SECONDARY BATTERY AND METHODS FOR PRODUCING THE SAME - A particulate mixture etc., which can be used as a precursor of lithium transition metal silicate-type compound of small particle size and low crystallinity, is provided. Further, a cathode active material that can undergo charge-and-discharge reaction in room temperature, and comprises lithium 02-28-2013
20130052528POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING ELECTRODE - An electrode and a power storage device each of which achieves better charge-discharge cycle characteristics and is less likely to deteriorate owing to separation of an active material, or the like are manufactured. As the electrode for the power storage device, an electrode including a current collector and an active material layer that is over the current collector and includes a particle containing niobium oxide and a granular active material is used, whereby the charge-discharge cycle characteristics of the power storage device can be improved. Moreover, contact between the granular active material and the particle containing niobium oxide makes the granular active material physically fixed; accordingly, deterioration due to expansion and contraction of the active material which occur along with charge and discharge of the power storage device, such as powdering of the active material layer or its separation from the current collector, can be suppressed.02-28-2013
20130052527POWER STORAGE DEVICE - A power storage device in which silicon is used as a negative electrode active material layer and which can have an improved performance such as higher discharge capacity, and a method for manufacturing the power storage device are provided. A power storage device includes a current collector and a silicon layer having a function as an active material layer over the current collector. The silicon layer includes a thin film portion in contact with the current collector, a plurality of bases, and a plurality of whisker-like protrusions extending from the plurality of bases. A protrusion extending from one of the plurality of bases is partly combined with a protrusion extending from another one of the plurality of bases.02-28-2013
20130089782NEGATIVE ELECTRODE ACTIVE MATERIAL WITH IMPROVED SAFETY, AND SECONDARY BATTERY COMPRISING SAME - The present invention relates to a negative electrode active material for an electrode mixture, and to an electrochemical cell comprising the negative electrode active material, wherein the negative electrode active material comprises an amorphous carbonaceous material and a doping element, and exhibits, in the temperature range of 450° C. to 950° C., at least two peaks of derivative weight change calculated by thermogravimetric analysis, and exhibits a maximum heat peak output of 20 mW to 60 mW as measured by differential scanning calorimetry.04-11-2013
20100003600SOLID-STATE STRUCTURE COMPRISING A BATTERY AND A VARIABLE RESISTOR OF WHICH THE RESISTANCE IS CONTROLLED BY VARIATION OF THE CONCENTRATION OF ACTIVE SPECIES IN ELECTRODES OF THE BATTERY - Presently, many variations of possible integrated resistors are utilized in IC design. However, depending on the electrical circuit it is often desirable that a resistor does not have a constant value, but rather that such a resistor has a variable controllable value. The invention relates to a solid-state variable resistor. The invention also relates to an electronic device, comprising such a solid-state variable resistor. The invention further relates to a method for producing a solid-state variable resistor.01-07-2010
20130089781ELECTRODE ASSEMBLY FOR ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE DEVICE - An object is to provide an electrode assembly for an electric storage device, such as a nonaqueous electrolyte cell, and an electric storage device that are capable of preventing increase of a short-circuit current at the time of occurrence of a short-circuit within a cell and have high safety. In order to achieve the object, provided is an electrode assembly for an electric storage device including a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, in which at least one of the positive electrode and the negative electrode includes a current collector, an active material layer formed on at least one face of the current collector, and an undercoat layer formed between the current collector and the active material layer and including an organic binder that evaporates and decomposes when heated to a predetermined temperature or more.04-11-2013
20130089780METHOD FOR MANUFACTURING LITHIUM SECONDARY BATTERY - A method for manufacturing a lithium secondary battery includes a first step of dispersing a conductive material in a solvent to prepare a conductive slurry; and a second step of mixing the prepared conductive slurry, a positive electrode active material and a binder to prepare a positive electrode mixture layer-forming slurry; wherein the first step is conducted so that a ratio of a particle size at 10% accumulation to a particle size at 90% accumulation, which are based on a particle size distribution measurement of the conductive material, is 10 or more and 200 or less.04-11-2013
20130071736PHASE SEPARATED SILICON-TIN COMPOSITE AS NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION BATTERIES - A composite of silicon and tin is prepared as a negative electrode composition with increased lithium insertion capacity and durability for use with a metal current collector in cells of a lithium-ion battery. This electrode material is formed such that the silicon is present as a distinct amorphous phase in a matrix phase of crystalline tin. While the tin phase provides electron conductivity, both phases accommodate the insertion and extraction of lithium in the operation of the cell and both phases interact in minimizing mechanical damage to the material as the cell experiences repeated charge and discharge cycles. In general, roughly equal atomic proportions of the tin and silicon are used in forming the phase separated composite electrode material.03-21-2013
20130071737LITHIUM IRON TITANIUM PHOSPHATE COMPOSITES FOR LITHIUM BATTERIES - A compound with multiple integrated phases of general formula (1-x)LiFePO03-21-2013
20130071739NEGATIVE ELECTRODE FOR POWER STORAGE DEVICE AND POWER STORAGE DEVICE - Provided is a negative electrode for a power storage device in which charge/discharge capacity is high and deterioration in battery characteristics due to charge/discharge is small. The negative electrode for a power storage device includes a negative electrode active material having a plurality of protrusions and a bar which serves as a connecting bridge over a first protrusion and a second protrusion among the plurality of protrusions. The bar is provided in a direction perpendicular to a direction in which a current collector is bent. An axis of the first protrusion and an axis of the second protrusion are oriented in the same direction. Further, a graphene covering a side surface of the protrusion or covering the side surface of the protrusion and a top surface of the bar may be provided.03-21-2013
20130071740PRESSURE-SENSITIVE ADHESIVE TAPE FOR BATTERY - The present invention relates to a pressure-sensitive adhesive tape for battery containing: a substrate and a pressure-sensitive adhesive layer laminated on at least one surface of a substrate, in which the pressure-sensitive adhesive layer is laminated on the substrate, 0.5 mm or more inside from both edges of the substrate, and in which the pressure-sensitive adhesive tape has a 180° peeling pressure-sensitive adhesive force at 23° C. being 0.1 N/10 mm or more, and has a slippage distance after a pressure-sensitive adhesive layer side of the pressure-sensitive adhesive tape is attached to a phenolic resin plate (attaching area: 10 mm×20 mm), followed by applying a load of 500 g thereto at 40° C. for 1 hour being 0.2 mm or less.03-21-2013
20130071738SOFT PACKAGE LITHIUM BATTERY TAB MATERIAL AND ITS METHOD OF PLATING AND APPLICATION - A tab for soft package lithium battery and its method of plating and application are provided. The tab uses SUS430 stainless steel strip, a copper strip, an aluminum strip or a nickel strip as a substrate. A nickel plating layer is plated on one end of one side of the substrate and a tin plating layer is plated on the nickel plating layer, or the tin plating layer is plated on one end of one side of the substrate directly. The thickness of the nickel plating layer is 0.5-2 um, and the thickness of the tin plating layer is 3-10 um. The tab has a lower manufacturing cost, favorable weldability and appropriate thermal conductivity.03-21-2013
20130059201NEGATIVE-ELECTRODE ACTIVE SUBSTANCE FOR ELECTRICITY STORAGE DEVICE, AND NEGATIVE ELECTRODE MATERIAL FOR ELECTRICITY STORAGE DEVICE AND NEGATIVE ELECTRODE FOR ELECTRICITY STORAGE DEVICE WHICH USE THE SAME - Provided is a negative-electrode active material for an electricity storage device, comprising: at least one kind of inorganic material selected from Si, Sn, Al, an alloy comprising any one of Si, Sn, and Al, and graphite; and an oxide material comprising at least one of P03-07-2013
20120225353NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING THE NEGATIVE ELECTRODE, LITHIUM SECONDARY BATTERY HAVING THE NEGATIVE ELECTRODE, AND VEHICLE HAVING THE LITHIUM SECONDARY BATTERY - A negative electrode (09-06-2012
20120225351METHOD FOR PRODUCING ELECTRODE LAMINATE AND ELECTRODE LAMINATE - A method for producing an electrode laminate including a current collector using aluminum as the material and an electrode layer laminated on the current collector, where the method includes the steps of: laminating an electrode layer forming composition, which contains at least a sulfide-based solid electrolyte and an active material and no binding agent, on the current collector; and f heating the current collector and the electrode layer forming composition at a temperature of not less than 60° C. and adhering them.09-06-2012
20130065123SOLID LITHIUM SECONDARY CELL, AND PRODUCTION METHOD THEREFOR - A solid electrolyte layer and electrode layers are formed within an electrically insulating frame part, and current collecting plates are held by the electrically insulating frame part. Since the current collecting plates are held by the frame part, the shifting or coming-apart of the current collecting plates can be restrained. In order to cause the current collecting plates to be held by the frame part, a powder of material of the electrode layer is filled in between the frame part and the current collecting plates.03-14-2013
20130065122SEMI-SOLID ELECTRODE CELL HAVING A POROUS CURRENT COLLECTOR AND METHODS OF MANUFACTURE - An electrochemical cell includes an anode, a semi-solid cathode, and a separator disposed therebetween. The semi-solid cathode includes a porous current collector and a suspension of an active material and a conductive material disposed in a non-aqueous liquid electrolyte. The porous current collector is at least partially disposed within the suspension such that the suspension substantially encapsulates the porous current collector.03-14-2013
20130065124NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTRODE USED FOR SECONDARY BATTERY, AND METHOD OF MANUFACTURING ELECTRODE - A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H1 of the negative electrode active material layer including the part on the proximal end part of the negative electrode tab, width H2 of the negative electrode active material layer or negative electrode current collector at a part other than the negative electrode tab, and width H3 of the positive electrode active material layer are formed to satisfy the relationships of H203-14-2013
20130065121STAMPED BATTERY GRID WITH EMBOSSED BORDER AND KINKED GRID WIRES - A grid for a battery having a plurality of spaced apart vertically extending and horizontally extending grid wire elements with each grid wire element having opposed ends joined to one of a plurality of nodes to define a plurality of open spaces and with selected ones of the grid wire elements being joined at one of their ends to frame elements. Oppositely facing sides of the grid wire elements define first and second planes that are parallel to each other. Selected ones of the frame elements have an undulating cross section across the width thereof with an apex of the undulation on one side of the grid being tangential to or terminating at a third plane that is separate from and parallel to the first and second planes.03-14-2013
20130065119LITHIUM ION SECONDARY BATTERY AND PREPARATION PROCESS OF SAME - A separator-type lithium ion secondary battery having large capacity and charge-discharge performance not destroying the separator, even with an active material layer having concavo-convex structure of high aspect ratio. The battery comprises a first electrode comprising a first current collector, and a first active material layer formed by plural convex first active material parts provided on the first current collector, a second electrode comprising a second current collector, and a second active material layer formed by plural convex second active material parts provided on the second current collector, and a separator provided between the first electrode and the second electrode, wherein the first electrode and the second electrode are integrated so that the convex first active material part is faced between the adjacent convex second active material parts, and the convex first active material part does not enter between the convex second active material parts.03-14-2013
20130065118CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed herein is a cathode active material for a secondary battery, which includes a combination of one or more selected from compounds represented by Formula 1, one or more selected from compounds represented by Formula 2, and one or more selected from compounds represented by Formula 3,03-14-2013
20130065120POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM SECONDARY BATTERY - Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided. The lithium-containing composite oxide particles are mixed with graphene oxide and then pressure is applied thereto, whereby the rectangular parallelepiped or substantially rectangular parallelepiped particles are likely to slip. In addition, in the case where the rectangular parallelepiped or substantially rectangular parallelepiped particles whose length in the b-axis direction is shorter than those in the a-axis direction and the c-axis direction are used, when pressure is applied in one direction, the b-axes can be oriented in the one direction.03-14-2013
20130065117NOVEL COMPOUND, METHOD FOR PREPARATION OF THE SAME, AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed are a novel compound, a method for preparing the same, and a lithium secondary battery comprising the same. More specifically, disclosed are a compound in which five MO03-14-2013
20130164611POWER STORAGE DEVICE - Disclosed is a power storage device including a negative electrode and a positive electrode. The negative electrode includes a negative electrode current collector including a common portion and a plurality of protrusions protruding from the common portion, and a negative electrode active material layer which covers a side surface of the protrusion. The positive electrode faces the negative electrode with an electrolyte provided therebetween. In the plurality of protrusions, a distance between adjacent protrusions is a distance with which adjacent negative electrode active material layers are in contact with each other before the capacity of the negative electrode active material layer reaches the theoretical capacity of the negative electrode active material layer by insertion of carrier ions from the positive electrode.06-27-2013
20130164612NEGATIVE ELECTRODE FOR NON-AQUEOUS SECONDARY BATTERY, NON-AQUEOUS SECONDARY BATTERY, AND MANUFACTURING METHODS THEREOF - A non-aqueous secondary battery which has high charge-discharge capacity, can be charged and discharged at high speed, and has little deterioration in battery characteristics due to charge and discharge is provided. A negative electrode includes a current collector and an active material layer. The current collector includes a plurality of protrusion portions extending in a substantially perpendicular direction and a base portion connected to the plurality of protrusion portions. The protrusion portions and the base portion are formed using the same material containing titanium. Top surfaces and side surfaces of the protrusion portions and a top surface of the base portion are covered with the active material layer. The active material layer includes a plurality of whiskers. The active material layer may be covered with graphene.06-27-2013
20130164613TERMINAL LEAD - A terminal lead 06-27-2013
20130164614CONDUCTIVE COMPOSITION FOR COATING A CURRENT COLLECTOR FOR A BATTERY OR AN ELECTRICAL DOUBLE LAYER CAPACITOR, CURRENT COLLECTOR FOR BATTERY OR ELECTRICAL DOUBLE LAYER CAPACITOR, BATTERY, AND ELECTRICAL DOUBLE LAYER CAPACITOR - A conductive composition for coating a current collector of coating a current collector for a battery or an electrical double layer capacitor, where the adhesion properties between a battery current collector and an active material layer are increased to improve the battery characteristics is presented. A battery using the battery current collector using the composition is also presented. The conductive composition for coating the current collector includes a vinylsilane copolymer, a polycarboxylic acid, and a conductive auxiliary. The formulation of the vinylsilane copolymer is also presented.06-27-2013
20120115030Electrode for electricity-storing device, electricity-storing device employing such electrode, and method of manufacturing electrode for electricity-storing device - An electricity-storing device electrode comprises a current collector foil, an active material layer formed on a surface of the current collector foil, and a high-resistance layer formed on the surface of the current collector foil so as to be adjacent to and in direct contact with the active material layer. At least a portion of the interface between the active material layer and the high-resistance layer, mixed phase is formed where constituents from the two layers intermingle. Presence of the mixed phase at the interface between the active material layer and the high-resistance layer improves the bond between the two adjacent layers. During manufacture and use, there is therefore reduced tendency to experience delamination or loss of the active material layer, the high-resistance layer, and/or other layer(s), such as layer(s) provided for short circuit prevention.05-10-2012
20120115029BATTERIES UTILIZING ELECTRODE COATINGS DIRECTLY ON NANOPOROUS SEPARATORS - Provided are lithium batteries utilizing electrode coatings directly on nanoporous separators, the batteries comprising (a) a separator/cathode assembly, (b) a separator/anode assembly, and (c) an electrolyte, where the batteries comprise alternating layers of the separator/cathode assembly and the separator/anode assembly. Preferably, a portion of the separator/cathode assembly is not in contact with the separator/anode assembly and a portion of the separator/anode assembly is not in contact with the separator/cathode assembly, and electrically conductive edge connections are made through these portions. Also provided are methods of preparing such lithium batteries.05-10-2012
20120237825METHOD FOR PRODUCING BATTERY ELECTRODE - The present invention provides a method for producing a battery electrode having a configuration in which an active material layer containing an active material 09-20-2012
20120237824POSITIVE ELECTRODE CURRENT COLLECTOR LAMINATE FOR LITHIUM SECONDARY BATTERY - The present invention provides a positive electrode current collector laminate that has the ability, even in the case of high voltage operation, to protect a positive electrode current collector from corrosion without impairing the battery characteristics, and also provides a lithium secondary battery. The positive electrode current collector laminate has an electroconductive protective layer (B) that contains a fluororesin (b1) and an electroconductive filler (b2) and is disposed on a positive electrode current collector (A), and the lithium secondary battery uses this positive electrode current collector laminate.09-20-2012
20120237823POROUS THREE DIMENSIONAL COPPER, TIN, COPPER-TIN, COPPER-TIN-COBALT, AND COPPER-TIN-COBALT-TITANIUM ELECTRODES FOR BATTERIES AND ULTRA CAPACITORS - A method and apparatus for forming a reliable and cost efficient battery or electrochemical capacitor electrode structure that has an improved lifetime, lower production costs, and improved process performance are provided. In one embodiment a method for forming a three dimensional porous electrode for a battery or an electrochemical cell is provided. The method comprises depositing a columnar metal layer over a substrate at a first current density by a diffusion limited deposition process and depositing three dimensional metal porous dendritic structures over the columnar metal layer at a second current density greater than the first current density.09-20-2012
20120237822LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer over the positive electrode current collector. The positive electrode active material layer includes a plurality of lithium-containing composite oxides each of which is expressed by LiMPO09-20-2012
20120237821ELECTRODE AND METHOD FOR PRODUCING THE SAME - The electrode of the present invention includes a current collector and an active material-containing layer formed on one side or both sides of the current collector. The active material-containing layer has a thickness of 20 to 200 μm per one side of the current collector, and diethyl carbonate permeates the active material-containing layer at a rate of 0.1 g/(cm09-20-2012
20120321947LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD FOR SAME - In a lithium secondary battery provided by the present invention, a positive electrode active material is constituted by a lithium composite oxide having at least lithium, nickel, and/or cobalt as main constituent elements, a porosity of a positive electrode active material layer is 30% or more and 40% or less, and a porosity of a negative electrode active material layer is 30% or more and 45% or less. Further, a void volume ratio (Sa/Sb) between a void volume (Sa) per unit area of the positive electrode active material layer and a void volume (Sb) per unit area of the negative electrode active material layer satisfies 0.9≦(Sa/Sb)≦1.4.12-20-2012
20110281162Negative Electrode for Hybrid Energy Storage Device - A negative electrode for a hybrid energy storage device includes a current collector; a corrosion-resistant conductive coating secured to at least one face of the current collector; a sheet comprising activated carbon adhered to the corrosion-resistant conductive coating; a tab portion extending from a side of the negative electrode; and a lug comprising a lead or lead alloy that encapsulates at least part of the tab portion.11-17-2011
20110281160ALL-SOLID-STATE BATTERY AND MANUFACTURING METHOD THEREOF - An all-solid-state battery, and manufacturing method thereof. The all-solid-state battery has a plurality of laminated bodies including: a cathode layer; an anode layer; and a solid electrolyte layer sandwiched therebetween, when neighboring two laminated bodies are defined as a first and second laminated body, the solid electrolyte layer of the first and second laminated body being connected through an insulating layer, to a pair of side surfaces of the laminated plurality of the laminated bodies, a first current collector which is connected with the cathode layer but not connected with the anode layer and a second current collector which is connected with the anode layer but not connected with the cathode layer being arranged respectively, a plurality of insulating layers connected to the solid electrolyte layers being arranged between the cathode layer and the second current collector and between the anode layer and the first current collector.11-17-2011
20110281161LITHIUM SECONDARY BATTERY - The lithium secondary battery provided by the present invention includes an electrode provided with an insulating particle-containing layer (11-17-2011
20120288757THREE-DIMENSIONAL NETWORK ALUMINUM POROUS BODY FOR CURRENT COLLECTOR, ELECTRODE USING THE ALUMINUM POROUS BODY, NONAQUEOUS ELECTROLYTE BATTERY, CAPACITOR AND LITHIUM-ION CAPACITOR - It is an object of the present invention to provide a sheet-shaped three-dimensional network aluminum porous body for a current collector which is suitably used for electrodes for nonaqueous electrolyte batteries and electrodes for capacitors, an electrode and a capacitor each using the same. The three-dimensional network aluminum porous body for a current collector of the present invention is a sheet-shaped three-dimensional network aluminum porous body for a current collector used for electrodes, and the aluminum porous body has been made to have an average cell diameter of 50 μm or more and 1000 μm or less in order to enhance the filling performance of an active material slurry.11-15-2012
20130022864BATTERY ELECTRODE PRODUCTION METHOD - The present invention provides a method for producing a battery electrode having a configuration in which a compound material layer containing an active material 01-24-2013
20110294010POWER STORAGE DEVICE AND MANUFACTURING METHOD THEREOF - It is an object to perform insertion and extraction of lithium ions effectively at a positive electrode of a power storage device so as to increase the reaction speed. Further, it is an object to increase the capacitance per unit volume of an active material of a positive electrode. A layer containing carbon and an active material layer are stacked at a positive electrode, whereby insertion and extraction of lithium ions are effectively performed at the positive electrode and reaction speed can be increased, even when the thickness of the positive electrode is increased. The active material layer interposed between the layers each containing carbon includes particulate crystals and therefore has high density, so that the active material can have large capacitance per unit volume.12-01-2011
20110294009POWER STORAGE DEVICE - An object is to provide a power storage device with high discharge capacity and high energy density. The power storage device includes a positive electrode in which a positive electrode active material is formed over a positive electrode current collector; and a negative electrode which faces the positive electrode with an electrolyte interposed therebetween. The positive electrode active material includes a film-form first region which includes a compound containing lithium and nickel; and a film-form second region which includes a compound containing lithium and one or more of iron, manganese, and cobalt, but not containing nickel. The first region is covered with the second region. Since a superficial portion of the positive electrode active material does not contain nickel, nickel is not in contact with an electrolyte solution; thus, generation of a catalyst effect of nickel can be suppressed, and a high discharge potential of nickel can be utilized.12-01-2011
20110287315CATHODE ACTIVE MATERIAL PROVIDING IMPROVED EFFICIENCY AND ENERGY DENSITY OF ELECTRODE - Provided is a cathode active material having a composition represented by the following Formula I: LiFe(P11-24-2011
20110217591ELECTRODE ASSEMBLY AND SECONDARY BATTERY USING THE SAME - An electrode assembly according to an embodiment of the present invention comprises: at least one first electrode plate comprising a first electrode tab extending from the first electrode plate; at least one second electrode plate comprising a second electrode tab extending from the second electrode plate; at least one first intermediate electrode comprising a first intermediate electrode tab extending from the first intermediate electrode; at least one second intermediate electrode comprising a second intermediate electrode tab extending from the second intermediate electrode; and a separator disposed between the first electrode plate and the second electrode plate, and a separator disposed between the first intermediate electrode and the second intermediate electrode; wherein the first electrode plate is disposed at an outermost side in the electrode assembly with respect to the first intermediate electrode, and the second electrode plate is disposed at an outermost side in the electrode assembly with respect to the second intermediate electrode; and wherein the first electrode tab and the first intermediate electrode tab together constitute a first electrode lead, and the second electrode tab and the second intermediate electrode tab together constitute a second electrode lead.09-08-2011
20110262806BATTERY PARTS HAVING RETAINING AND SEALING FEATURES, AND ASSOCIATED METHODS OF MANUFACTURE AND USE - Battery parts, such as battery terminals and bushings providing both top and front access for connection, and associated methods of manufacture and use are described herein. In one embodiment, a battery terminal can include one or more features for interlocking or engaging the adjacent battery container material to prevent or reduce separation between the battery part and the container material and prevent or reduce acid leakage. In one embodiment, the engagement feature can include raised, parallel lips, rims or flanges that extend upwardly along outer edges of a groove or channel formed in a surface of the battery part. The flanges can be deformed by a tool or otherwise so that they bend inwardly toward each other to at least partially close off the opening to the channel. When battery container material flows into the channel and hardens, it forms a bead or elongate bulb that interlocks and engages the battery part.10-27-2011
20100112438ENERGY CELL PACKAGE - An energy cell package includes an energy cell, a first metal substrate, a second metal substrate, at least one first jointing component, at least one second jointing component, and an insulating structure. The energy cell has at least one positive contact and at least one negative contact. The first metal substrate has an end functioning as an external positive contact. The second metal substrate has an end functioning as an external negative contact. The at least one first jointing component joints the at least one positive contact and the first metal substrate, and the at least one second jointing component joints the at least one negative contact and the second metal substrate. Except the external positive contact and external negative contact, the insulating structure coats the energy cell, first metal substrate, second metal substrate, at least one first jointing component, and at least one second jointing component.05-06-2010
20110262809NON-STOICHIOMETRIC TITANIUM COMPOUND, CARBON COMPOSITE OF THE SAME, MANUFACTURING METHOD OF THE COMPOUND, ACTIVE MATERIAL OF NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY CONTAINING THE COMPOUND, AND LITHIUM-ION SECONDARY BATTERY USING THE ACTIVE MATERIAL OF NEGATIVE ELECTRODE - Provided is a highly safe lithium-ion secondary battery with a gradual voltage decrease, high charge/discharge capacity, and ease of handling, in which explosion due to expansion, heat generation, ignition, and the like is prevented.10-27-2011
20120107684NEGATIVE ELECTRODE FOR LITHIUM-ION BATTERY, PRODUCTION METHOD THEREFOR, AND LITHIUM-ION BATTERY - A negative electrode for a lithium ion battery 05-03-2012
20120107683COMPOSITES OF SELF-ASSEMBLED ELECTRODE ACTIVE MATERIAL-CARBON NANOTUBE, FABRICATION METHOD THEREOF AND SECONDARY BATTERY COMPRISING THE SAME - A composite of electrode active material including aggregates formed by self-assembly of electrode active material nanoparticles and carbon nanotubes, and a fabrication method thereof are disclosed. This composite is in the form of a network in which at least some of the carbon nanotubes connect two or more aggregates that are not directly contacting each other, creating an entangled structure in which a plurality of aggregates and a plurality of carbon nanotube strands are intertwined. Due to the highly conductive properties of the carbon nanotubes in this composite, charge carriers can be rapidly transferred between the self-assembled aggregates. This composite may be prepared by preparing a dispersion in which the nanoparticles and/or carbon nanotubes are dispersed without any organic binders, simultaneously spraying the nanoparticles and the carbon nanotubes on a current collector through electrospray, and then subjecting the composite material formed on the current collector to a heat treatment.05-03-2012
20120295159LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE SLURRY COMPOSITION, A LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery negative electrode slurry composition comprising a negative electrode active material, a thickening agent, a binder of polymer particles and water, wherein the negative electrode active material includes a carbon material and the carbon material has a graphite interlayer distance (an interplanar spacing (d value) of the (002) plane as determined by an X-ray diffraction method) of 0.340 to 0.370 nm, the thickening agent is a polymer having a degree of polymerization of 1400 to 3000, the polymer particles are obtained by polymerizing a monomer composition including 1 to 10 wt % of a monocarboxylic acid monomer, and an amount of acid groups on the surface of the polymer particles as determined by a conductivity titration is 0.1 to 1.0 mmol per 1 g of the polymer particles.11-22-2012
20120295158BATTERY CELL - Disclosed is a battery cell in which a first angle that is the angle between a collector (11-22-2012
20120295157LITHIUM SECONDARY BATTERY - A lithium secondary battery of the present invention has a positive electrode is provided with a positive electrode mix layer that includes a positive electrode active material and a conductive material. The positive electrode mix layer has two peaks, large and small, of differential pore volume over a pore size ranging from 0.01 μm to 10 μm in a pore distribution curve measured by a mercury porosimeter. A pore size of the smaller peak B of the differential pore volume is smaller than a pore size of the larger peak A of the differential pore volume.11-22-2012
20130216907POROUS ELECTROACTIVE MATERIAL - A composition including a plurality of electroactive porous particle fragments including silicon as an electroactive material is characterised in that each porous particle fragment includes a network of pores defined and separated by silicon containing walls. The network of pores suitably has a three dimensional arrangement of pores extending through the volume of the particle in which the pore openings are provided on two or more planes over the surface of the particle. The composition is useful as an electroactive material that is able to form an alloy with lithium and can be used in the fabrication of anodes for use in lithium ion secondary batteries. A method of fabricating the silicon containing porous particle fragments is also disclosed.08-22-2013
20130216908NONAQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery capable of securing safety at a time of battery abnormality and restricting a drop in a charge/discharge property at a time of battery use is provided. In a lithium-ion secondary battery 08-22-2013
20130216904METHOD FOR FORMING A MICROBATTERY - A method for forming a microbattery including, on a surface of a first substrate, one active battery element and two contact pads, this method including the steps of: a) forming, on a surface of a second substrate, two contact pads with a spacing compatible with the spacing of the pads of the first substrate; and b) arranging the first substrate on the second substrate so that the surfaces face each other and that the pads of the first substrate at least partially superpose to those of the second substrate, where a portion of the pads of the second substrate is not covered by the first substrate.08-22-2013
20130216903NON-AQUEOUS SECONDARY BATTERY HAVING A BLENDED CATHODE ACTIVE MATERIAL - An electrochemically active material comprising a mixture or blend of two groups of particles, exhibits synergetic effect. The two groups of particles are compounds of formula Li08-22-2013
20100190055BATTERY CELL CONNECTION METHOD AND APPARATUS - A battery module includes an electrochemical battery cell having a pair of cell tabs and conductive interconnecting members having one or more interconnect extensions. The cell tabs are welded to different interconnecting members to form welded joints, and each interconnect extension is hemmed with respect to the cell tabs to overlap and reinforce the welded joint. The welded joint can be ultrasonically-welded, while the interconnecting member can have a generally U-shaped profile with side walls formed integrally with the interconnect extensions. A method of minimizing effects of a shearing stress in the battery module includes fusing a cell tab or tabs to the interconnecting member to form a welded joint, and then hemming an interconnect extension of the interconnecting member to form a hem seam overlapping the cell tabs. Fusing can include ultrasonically welding the cell tabs to the side walls or other suitable means.07-29-2010
20090035658ASSEMBLED BATTERY AND BATTERY PACK - According to an aspect of the invention, there is provided an assembled battery including: a conductive filler; a first cell comprising a flat first electrode tab made of aluminum or an aluminum alloy; a second cell comprising a flat second electrode tab formed of aluminum or an aluminum alloy. The second electrode tab is electrically connected to the first electrode tab through the conductive filler intervening between the first cell and the second cell and through weld surfaces of the first cell and the second cell which are at least partly welded to each other.02-05-2009
20090035657Electrode for Hybrid Energy Storage Device and Method of Making Same - An electrode for a hybrid energy storage device includes a current collector; an active material adhered to and in electrical contact with at least one surface of the current collector; and a tab element, wherein the thickness of the tab element is greater than the thickness of the current collector.02-05-2009
20080292962POUCH-TYPE SECONDARY BATTERY - A pouch-type secondary battery including: an electrode assembly comprising a positive electrode plate, a negative electrode plate and a separator; a negative electrode tab electrically connected to the negative electrode plate and having a first tab tape; and a positive electrode tab electrically connected to the positive electrode plate and having a second tab tape wherein one or two of end portions which the positive electrode tab crosses are located inside a sealing portion.11-27-2008
20120141871NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK AND VEHICLE - A nonaqueous electrolyte battery includes a negative electrode including a current collector and a negative electrode active material having a Li ion insertion potential not lower than 0.4V (vs. Li/Li06-07-2012
20090297946Soft Packaged And High Capacity Lithium Ion Battery And The Manufacture Method Of The Same - A soft packaged and high capacity lithium ion battery and the manufacture method of the same, wherein the said battery comprises a battery core sealed by a complex film of aluminum-plastic. The said battery core is laminated by positive electrode plates, negative electrode plates and separators alternatively. The said positive electrode plates and negative electrode plates are divided into coating area and uncoating area along the length direction. The uncoating area of the said plurality positive electrode plates extends from the one side of the said laminated structure and folds over the top surface of the laminated structure to form positive current collector. The uncoating area of the said plurality negative electrode plates also extends from the other side of the said laminated structure and folds over the top surface of the laminated structure to form negative current collector. A large area thin aluminum plate is used as positive and negative electrode tab to confirm sufficient contact with the positive and negative current collectors in the large area. Thus the battery inner resistance is reduced and the ability of charge and discharge in large current of the battery is improved.12-03-2009
20130216902CARBON-COATED LITHIUM IRON PHOSPHATE OF OLIVINE CRYSTAL STRUCTURE AND LITHIUM SECONDARY BATTERY USING THE SAME - Disclosed is a lithium iron phosphate with an olivine crystal structure wherein the lithium iron phosphate has a composition represented by the following Formula 1 and carbon (C) is coated on the surface of the lithium iron phosphate by chemical bonding via a heterogeneous element other than carbon. Li08-22-2013
20130216906BINDER FOR SECONDARY BATTERY EXIBITING EXCELLENT ADHESION FORCE - Provided is a binder for secondary battery electrodes comprising a polymer obtained by polymerizing three or more kinds of monomers with a reactive emulsifying agent. The binder reduces moisture impregnation, improves dispersibility and enhances adhesive force, thus providing a secondary battery with superior safety and cycle characteristics.08-22-2013
20110223478SECONDARY BATTERY AND SECONDARY BATTERY MODULE USING THE SAME - A secondary battery includes a cell body having an electrode assembly disposed therein; and an electrode tab extending from each electrode of the electrode assembly to an outside of the cell body in a specified direction, and having at least one flexed part at an intermediate portion thereof.09-15-2011
20120244430LITHIUM-ION SECONDARY BATTERY - To provide a lithium-ion secondary battery having higher discharge capacity and higher energy density and a manufacturing method thereof. The lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolyte provided between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer provided over the positive electrode current collector. In the positive electrode active material layer, graphenes and lithium-containing composite oxides are alternately provided. The lithium-containing composite oxide is a flat single crystal particle in which the length in the b-axis direction is shorter than each of the lengths in the a-axis direction and the c-axis direction. Further, the lithium-containing composite oxide is provided over the positive electrode current collector so that the b-axis of the single crystal particle intersects with a surface of the positive electrode current collector.09-27-2012
20120244429ELECTRICAL STORAGE DEVICE AND ELECTRODE THEREOF - The present invention generally relates to electrodes, electrical storage devices comprising the electrodes, and methods for producing the electrodes and electrical storage devices. The electrodes comprise a current collector, an electrically conductive mat, and a first and second electroactive material, the first electroactive material having a higher energy density than the second electroactive material, and the second electroactive material having a higher rate capability than the first electroactive material. The electrically conductive mat provides a structural and conductive support for at least one of the high-rate and high-energy electroactive materials. The electrodes can be provided in various configurations and be used in high-rate high-energy electrical storage devices to provide improved cycle life.09-27-2012
20120196181POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive electrode includes a current collector; and a positive active material layer including an additive which is Li08-02-2012
20100190056Battery Tab Structure - Cathode and anode structures for a battery each include one or more tabs welded to a substrate. A method of making a battery may include providing tabs welded to a substrate of each of a cathode and anode of the battery. Tabs for a cathode or anode structure may be provide from the same or similar material as the substrate of a corresponding cathode or anode.07-29-2010
20120244434Positive Electrode For Lithium Ion Battery, Method For Producing Said Positive Electrode, And Lithium Ion Battery - The present invention provides a positive electrode for lithium ion battery reducing a contact resistance of a battery and achieving an excellent output property. The positive electrode for lithium ion battery comprising a mixed layer comprising: 09-27-2012
20130216905ELECTRODE ACTIVE MATERIAL LAYER, ELECTRODE BODY, LITHIUM-ION SECONDARY BATTERY, AND METHOD OF PRODUCING ELECTRODE ACTIVE MATERIAL LAYER - An electrode active material layer for a lithium-ion secondary battery is formed from an electrode active material of layered crystal. The electrode active material having layered crystal is oriented in a layer direction of the electrode active material layer, and a plurality of through holes are formed from the surface of the electrode active material layer. The diameter of the through holes is preferably 10 μm to 5000 μm inclusive.08-22-2013
20100233536SAFETY APPARATUS USING HIGH POWER BATTERY - Disclosed is a safety apparatus for responding to a battery short-circuit, and more particularly a safety apparatus for use in the event of a short-circuited of a high power battery, in which a PTC function is integrated into a tab of a high power battery. The safety apparatus for responding to a short-circuit of a high power battery comprises a casing, a battery part including a first electrode plate, a separator, and a second electrode plate arranged in that order and disposed inside the casing, a first tab connected to one of four edges of the first electrode plate via a first tab welding part and protruding from the casing, and a second tab connected to one of four edges of the second electrode plate via a second tab welding part and protruding from the casing, wherein a portion of the first tab ruptures when the first tab and the second tab are short-circuited, thus preventing the first electrode plate and the second electrode plate from being short-circuited.09-16-2010
20120171568PRISMATIC BATTERY CELL WELDING - A prismatic battery cell is provided. The prismatic battery cell includes a plurality of electrode films conducting electricity in the prismatic battery cell, a terminal welded to the plurality of electrodes, and a buffer film welded to the plurality of electrodes, the plurality of electrodes interposing the terminal and the buffer film.07-05-2012
20130130105NOVEL ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed are an electrode active material for lithium secondary batteries, comprising at least one selected from compounds represented by the following formula 1, and a lithium secondary battery comprising the same.05-23-2013
20130130106ACTIVE MATERIAL, ELECTRODE CONTAINING THE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY INCLUDING THE ELECTRODE, AND METHOD FOR MAKING ACTIVE MATERIAL - To provide an active material from which a sufficient discharge capacity is obtained, an electrode containing the active material, a lithium secondary battery including the electrode, and a method for making an active material. A method for making an active material includes a temperature elevation step of heating a mixture containing a lithium source, a pentavalent vanadium source, a phosphoric acid source, water, and a reductant in a hermetically sealed container at a temperature elevation rate T1 from 25° C. to 110° C. and then at a temperature elevation rate T2 from 110° C. to a designated temperature of 200° C. or more, in which T1>T2; T1=0.5 to 10° C./min; and T2=0.1 to 2.2° C./min.05-23-2013
20100178559NICKEL-COPPER CLAD TABS FOR RECHARGEABLE BATTERY ELECTRODES AND METHODS OF MANUFACTURING - The invention provides nickel-copper clad tabs for rechargeable battery negative electrodes and methods of manufacturing thereof. Systems and methods for configuring tabs on a rechargeable battery may include a current collector comprising one or more collector foil and one or more tabs connected to the collector foil for conveying generated current from the current collector. The tabs may be configured to extract greater capacity from the battery electrodes so that the resulting battery may exhibit higher performance. The tabs may be configured so that a negative electrode tab may be clad with a nickel layer and a copper layer.07-15-2010
20110244324LI-ION BATTERY CATHODE MATERIALS WITH OVER-DISCHARGE PROTECTION - A lithium-ion battery having over-discharge protection includes an anode comprising at least an electrochemically active anode material, said anode having an anode irreversible capacity loss during a first charge of the lithium-ion battery; and a cathode comprising at least an electrochemically active cathode material characterized by the formula:10-06-2011
20110244325NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes a positive electrode (10-06-2011
20110244323NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes a positive electrode 10-06-2011
20110244322CORE-SHELL TYPE ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, METHOD FOR PREPARING THE SAME AND LITHIUM SECONDARY BATTERIES COMPRISING THE SAME - Provided are a core-shell type anode active material for lithium secondary batteries including a carbonaceous material core; and a shell formed outside the carbonaceous material core, the shell including a PTC (Positive Temperature Coefficient) medium. The core-shell type anode active material for lithium secondary batteries has the shell including the PTC medium, and thus has the improved conductivity and high output density, exhibiting excellent electrical characteristics. And, a lithium secondary battery manufactured using the anode active material has excellent safety, in particular safety against overcharge and external short circuit.10-06-2011
20100183921Battery - The invention relates to a battery, comprising at least one battery cell connecting element (07-22-2010
20100040950Negative Electrode for Hybrid Energy Storage Device - A negative electrode for a hybrid energy storage device includes a current collector; a corrosion-resistant conductive coating secured to at least one face of the current collector; a sheet comprising activated carbon adhered to the corrosion-resistant conductive coating; a tab portion extending from a side of the negative electrode; and a lug comprising a lead or lead alloy that encapsulates at least part of the tab portion.02-18-2010
20120148917AQUEOUS COATING LIQUID FOR AN ELECTRODE PLATE, ELECTRODE PLATE FOR AN ELECTRICAL STORAGE DEVICE, METHOD FOR MANUFACTURING AN ELECTRODE PLATE FOR AN ELECTRICAL STORAGE DEVICE, AND ELECTRICAL STORAGE DEVICE - A water-based coating formulation for an electrode plate of an electricity storage device, said water-based coating formulation being adapted to form a coating film layer on the electrode plate, contains at least one resin binder having a saponification degree of 40% or higher and selected from unmodified and modified polyvinyl alcohols and unmodified and modified ethylene-vinyl alcohol copolymers, a conductive material, and a specific polybasic acid or its acid anhydride in a water-based medium containing water as a polar solvent. Per parts by mass of the conductive material (2), the resin binder is from 0.1 to 3 parts by mass and the polybasic acid or the like is from 0.01 to 6 parts by mass. The coating formulation has a solids content of from 0.02 mass % to 40 mass %.06-14-2012
20120148918ANODE OF CABLE-TYPE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF - Provided is a method for manufacturing an anode of a cable-type secondary battery having a solid electrolyte layer, including preparing an aqueous solution of an anode active material, making an anode by immersing a core as a current collector having a horizontal cross section of a predetermined shape and extending longitudinally in the aqueous solution, then applying an electric current to form a porous shell of the anode active material on the surface of the core, and forming a solid electrolyte layer on the surface of the anode by passing the anode through a solid electrolyte solution. The anode has a high contact area to increase the mobility of lithium ions, thereby improving battery performance. Also, the anode is capable of relieving stress and pressure in the battery, such as volume expansion during charging and discharging, thereby preventing battery deformation and ensuring battery stability.06-14-2012
20120148916METHOD FOR EVALUATING POSITIVE ELECTRODE ACTIVE MATERIAL - Provided is a method for evaluating a positive electrode active material. The method evaluates the performance of a positive electrode active material comprising a lithium transition metal oxide that contains a manganese-containing transition metal oxide. In this method, the lithium penetration rate into a transition metal site in the lithium transition metal oxide is evaluated based on the intensity ratio P between a first-neighbor Mn—O peak intensity A and a second-neighbor Mn-M peak intensity B in a radial distribution function obtained from EXAFS at the K absorption edge of manganese (Mn). Moreover, the ratio of excess lithium present in the positive electrode active material may also be evaluated based on the excess amount of added lithium Q contained in excess of the stoichiometric ratio of the lithium transition metal oxide and the intensity ratio P.06-14-2012
20110059359HIGH RATE CAPABILITY DESIGN OF LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery includes LiFePO03-10-2011
20090317717Electrode Assembly Having Tab-Lead Joint Portion of Minimized Resistance Difference Between Electrodes and Electrochemical Cell Containing The Same - Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, the electrode tabs are electrically connected to an electrode lead, and the pluralities of electrode tabs are joined to the top and the bottom of the electrode lead at an electrode lead-electrode tabs joint portion such that the resistance difference between electrodes at the electrode lead-electrode tabs joint portion is minimized. Also disclosed is an electrochemical cell including the electrode assembly.12-24-2009
20120202117NEGATIVE ELECTRODE FOR NON-AQUEOUS-SYSTEM SECONDARY BATTERY AND MANUFACTURING PROCESS FOR THE SAME - It is equipped with a negative-electrode current collector, and a negative-electrode mixture-material layer comprising a negative-electrode mixture material that includes a negative-electrode active material containing silicon (Si) and a binding agent at least, the negative-electrode mixture-material layer being formed on a surface of the negative-electrode current collector; and 08-09-2012
20120202116Composite Current Collector for Aqueous Electrochemical Cell for aqueous electrochemical cell - Composite current collectors containing coatings of metals, alloys or compounds, selected from the group of Zn, Cd, Hg, Ga, In, Tl, Sn, Pb, As, Sb, Bi and Se on non-metallic, non-conductive or poorly-conductive substrates are disclosed. The composite current collectors can be used in electrochemical cells particularly sealed cells requiring a long storage life. Selected metals, metal alloys or metal compounds are applied to polymer or ceramic substrates by vacuum deposition techniques, extrusion, conductive paints (dispersed as particles in a suitable paint), electroless deposition, cementation; or after suitable metallization by galvanic means (electrodeposition or electrophoresis). Metal compound coatings are reduced to their respective metals by chemical or galvanic means. The current collectors described are particular suitable for use in sealed primary or rechargeable galvanic cells containing mercury-fee and lead-free alkaline zinc electrodes.08-09-2012
20120202114METHOD FOR PREPARING A POSITIVE ELECTRODE MATERIAL THROUGH EXTRUSION IN PRESENCE OF AN AQUEOUS SOLVENT, POSITIVE ELECTRODE OBTAINED THROUGH SAID METHOD, AND USES THEREOF - The present invention relates to a method for preparing a positive electrode that is made up of a composite material containing at least one active positive electrode made of iron and phosphate and at least one water-soluble polymer having ionic conduction properties in the presence of a lithium salt, said method comprising at least one step for mixing ingredients of the composite material through extrusion so as to obtain an extruded composite material and wherein said extrusion step is carried out by means of a co-kneader or extruder in the presence of an aqueous solvent and at a temperature from 20° to 95° C. The invention also relates to the positive electrode obtained according to said method, to the use of said electrode for manufacturing a lithium battery, and to the lithium battery having such electrode built therein. The electrode is particularly characterized in that it contains a level of active material greater than 60 wt %.08-09-2012
20120202113Lithium Ion Battery - A high rate lithium battery can include a cathode composition coated on a substrate. The cathode composition can include first and second active materials and binder. The first and second active materials can have different characteristics including, for example, particle size, tap density, and amount of conductive component. The first and second active materials can be combined to achieve higher packing densities of the active material, which may allow for a higher capacity battery as compared to conventional batteries formed with a single active material.08-09-2012
20110081574SECONDARY BATTERY AND METHOD OF FABRICATING SECONDARY BATTERY - An electrode assembly of a secondary battery and a method of fabricating the electrode assembly of the secondary battery. An electrode assembly of a secondary battery includes a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates, the first electrode plate including a first electrode collector and a first electrode tab coupled thereto, and the second electrode plate including a second electrode collector and a second electrode tab coupled thereto; and a protective member surrounding an end of one of the first and second electrode tabs, and a portion of the one of the first and second electrode tabs is exposed from the protective member and is coupled to a non-coating portion of a respective one of the first and second electrode plates.04-07-2011
20110262807Carbon Nanotube Augmented Sulfur Cathode for an Elemental Sulfur Battery - An electrode for a battery is augmented with vertically aligned carbon nanotubes, allowing both improved storage density of lithium ions and the increase electrical and thermal conductivity. Carbon nanotubes are extremely good electrical and thermal conductors, and can be grown directly on the electrode (e.g., anode or cathode) current collector metals, allowing direct electrical contact. Additionally carbon nanotubes have an ideal aspect ratio, having lengths potentially thousands of times as long as their widths, 10 to 1,000 nanometers. In an embodiment, the carbon nanotube electrode (e.g., a cathode) comprises embedded elemental sulfur, allowing both the improved retention of elemental sulfur and increase electrical conductivity. The surface of carbon nanotubes are nearly chemically identical to carbon, binding the sulfur atoms to the carbon nanotubes, preventing the “loss” of sulfur with the formation of LiS intermediate products.10-27-2011
20120034521CURRENT COLLECTOR FOR SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME - A current collector for a secondary battery (02-09-2012
20120308886THREE-DIMENSIONAL NETWORK ALUMINUM POROUS BODY FOR CURRENT COLLECTOR AND METHOD FOR PRODUCING THE SAME - The present invention provides an electrode current collector for a secondary battery or the like, wherein a compressed part for attaching a tab lead to an end part of the three-dimensional network aluminum porous body to be used as an electrode current collector of a secondary battery, a capacitor using a nonaqueous electrolytic solution or the like is formed, and a method for producing the same. That is, the present invention provides a three-dimensional network aluminum porous body for a current collector having a compressed part compressed in a thickness direction for connecting a tab lead to its end part, wherein the compressed part is formed at a central part in the thickness direction of the aluminum porous body.12-06-2012
20120308885POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive electrode includes a current collector including a carbon layer disposed on a substrate; and a positive active material layer disposed on the current collector, wherein the carbon layer has a loading level of 0.5 g/m12-06-2012
20100021816Flexible Circuit Having an Integrally Formed Battery - A method and apparatus of forming a battery enabled flexible circuit. The invention includes forming a first insulating layer and positioning a battery on the first insulating layer, the battery having at least a first and a second terminal. A second insulating layer is then formed on the first insulating layer and the battery. The second insulating layer has vias that are in electrical contact with at least one of the first and the second terminals.01-28-2010
20120040245ELECTRODE COMPOSITIONS AND METHODS - Provided is an electrode composition comprising an active material that includes cobalt, tin, and carbon along with methods of making and using the same. Also provided are electrodes that include the provided electrode compositions, electrochemical cells that include the provided electrodes, and battery packs that include at least one of the provided electrochemical cells. In some embodiments, the composition also includes iron.02-16-2012
20110305950POWER STORAGE DEVICE - An electrode for a power storage device with less deterioration due to charge and discharge and a power storage device using the electrode are provided. In the electrode for a power storage device and the power storage device, a region including a metal element which functions as a catalyst is selectively provided over a current collector, and then, an active material layer is formed. By selectively providing the region including the metal element, a whisker can be effectively generated in the active material layer over the current collector, and the whisker generation region can be controlled. Accordingly, the discharge capacity can be increased and the cycle characteristics can be improved.12-15-2011
20110305949TRANSITION METAL OXIDENITRIDES - An electrode comprises a conductor and an electrode coating, said electrode coating comprising as electronically active material a transition metal (T) oxidenitride of formula Li12-15-2011
20120040244ANODE COMPOSITION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING THE SAME - An anode composition for a lithium secondary battery includes an anode active material, a binder, and a conductive material. The active material includes a plurality of anode active material particles, each of which includes a core made of metal or metalloid allowing alloying or dealloying with lithium, or a compound containing the metal or metalloid; and a shell formed at an outer portion of the core and having Ketjen black. The conductive material includes carbon nano fiber. The anode composition uses a metal-based anode active material that may controls the volume expansion, and also uses conductive material with excellent dispersion so that the life characteristic of the battery may be improved.02-16-2012
20120040243ELECTRODE FORMATION FROM A POWDERED MIXTURE - Particles of active electrode material, such as a fibrillized mixture of carbon, and binder are deposited onto a surface of a current collector sheet. The current collector sheet and the particles are processed in a high-pressure nip, such as a calender. As a result of the high-pressure processing, a film of active electrode material is formed on and bonded to the surface of the current collector sheet. The process is then repeated to form a second film on the second surface of the current collector sheet. In an embodiment, the particles are applied to both surfaces of the current collector sheet at the same time, followed by a pass through a calender. The current collector sheet with the bonded films is shaped into electrodes suitable for use in various electrical devices, including double layer capacitors.02-16-2012
20120040242ANODE FOR LITHIUM ION SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, ELECTRIC TOOL, BATTERY CAR, AND ELECTRIC POWER STORAGE SYSTEM - A lithium ion secondary battery having more superior cycle characteristics is provided. The lithium ion secondary battery includes a cathode, an anode, and an electrolyte. The anode has an anode active material layer in which a first layer containing silicon as an anode active material, and a second layer containing silicon and a metal element as an anode active material are alternately layered on an anode current collector. At least one of a lamellar oxide-containing region and a lamellar nitrogen-containing region is inserted in at least one of the first layer and the second layer.02-16-2012
20120301783NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a non-aqueous electrolyte secondary battery including a positive electrode absorbing and releasing lithium ions, a negative electrode, a porous insulating layer interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte with lithium ion conductivity. The negative electrode includes a current collector having a plurality of protrusions on a surface thereof, and particulate bodies being respectively supported on the protrusions, and including an alloy-type active material. The negative electrode has gaps between the particulate bodies adjacent to each other. The particulate bodies extend outwardly from surfaces of the protrusions of the current collector, and are each an aggregate of a plurality of clusters including the alloy-type active material.11-29-2012
20120301782METHOD OF MAKING TIN-BASED ALLOYS FOR NEGATIVE ELECTRODE COMPOSITIONS - Powder milling techniques, tin-based alloys formed thereby, and the use of such alloys as electrode compositions for lithium ion batteries are provided. The alloys include tin and at least one transition metal but contain no silicon. The powder milling is done using low energy roller milling (pebble milling).11-29-2012
20120301781ELECTRODE USEABLE IN ELECTROCHEMICAL CELL AND METHOD OF MAKING SAME - In one aspect of the present invention, an electrode useable in an electrochemical cell includes an electrically conductive substrate, nanostructured current collectors in electrical contact with the conductive substrate, and nanoparticles of a ternary orthosilicate composite coated on the nanostructured current collectors. The ternary orthosilicate composite comprises Li11-29-2012
20120301780POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY, METHOD FOR PRODUCING THE SAME, POSITIVE ELECTRODE FOR LITHIUM ION BATTERY, AND LITHIUM ION BATTERY - A positive electrode active material for a lithium ion battery includes a material represented by chemical formula LiMPO11-29-2012
20130011735LITHIUM INKS AND ELECTRODES AND BATTERIES MADE THEREFROM - Lithium metal powder based inks are provided. The inks are provided in formulations suitable for printing using a variety of printing techniques, including screen printing, offset litho printing, gravure printing, flexographic printing, pad printing and inkjet printing. The inks include lithium metal powder, a polymer binder and optionally electrically conductive materials and/or lithium salts in a solvent. The inks are well suited for use in printing electrodes for use in lithium metal batteries. Batteries made from lithium powder based anodes and electronic applications such as RFID labels, Smart Cards and wearable medical devices are also provided.01-10-2013
20120308887RECHARGEABLE BATTERIES - A rechargeable battery is disclosed having electrode and separator structures which are made up of fibre-reinforced composite material, thereby allowing the battery itself to serve as an integral structural component. The utilisation or efficiency of the rechargeable battery is considerably enhanced by rendering at least part of the matrix material of the electrodes and the separator porous, thereby to facilitate improved access to active sites on the electrodes, with the porosity in the separator allowing improved ion transport, both of which enhance cell operation. The porous structure also provides improved electrolyte containment and retention in the event of damage.12-06-2012
20110318637LITHIUM SECONDARY BATTERY - An objective of the present invention is to provide a lithium secondary battery which can achieve a higher capacity and a longer life without reduction in a lower voltage in the battery. In the present invention, a compound represented by general formula (I) described below is used as a cathode active material, and a compound represented by general formula (II) described below is used as an anode active material;12-29-2011
20120045691CARBON NANOTUBE BASED ELECTRODE MATERIALS FOR HIGH PERFORMANCE BATTERIES - Improved battery materials, and a process for producing such improved battery materials are disclosed. The materials and methods employ battery components based on porous lightweight non woven substrate materials that are coated with dispersions comprised of carbon nanotubes, conductive secondary particles (usually with an approximate diameter between about 0.5 nm to 100 microns), a binder and a solvent. The dispersions permeate the substrate's pores, and when cured, the carbon nanotubes form conductive bridges between the conductive secondary particles, and these in turn are held on the substrate by the binder. The net effect is to increase the battery's total active material and energy density. The permeated substrate may then be further treated to achieve the desired conductivity as needed. These materials and methods can produce improved lead acid and silver zinc batteries, as well as other types of batteries.02-23-2012
20120045690HIGH MANGANESE POLYCRYSTALLINE ANODE MATERIAL, PREPARATION METHOD THEREOF AND DYNAMIC LITHIUM ION BATTERY - Provided are a high manganese polycrystalline anode material, preparation method thereof and dynamic lithium ion battery. The general formula of the high manganese polycrystalline anode material is LiwMnx(CoNi)yOz, wherein x=0.4-2.0, y=0.1-0.6, x+y<2, z≧2, and w≧1. The weight of Mn is not less than 40% of the weight of LiwMnx(CoNi)yOz, and the particle size thereof is 7-20 microns. The high manganese polycrystalline anode material has more than two lattice structures selected from LiMn02-23-2012
20120003531LITHIUM-ION BATTERY - A lithium-ion battery includes a positive electrode having a current collector and a first active material and a negative electrode comprising a current collector, a second active material, and a third active material. The second active material comprises a lithium titanate material and the third active material comprises a sulfide. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.01-05-2012
20120003530MANUFACTURING METHOD OF POWER STORAGE DEVICE - It is an object to improve performance of a power storage device, such as cycle characteristics. A power storage device includes a current collector and a crystalline semiconductor layer including a whisker, which is formed on and in close contact with the current collector. Separation of the crystalline semiconductor layer is suppressed by an increase of adhesion, whereby cycle characteristics in which a specific capacity of a tenth cycle number with respect to a first cycle number is greater than or equal to 90% is realized. In addition, cycle characteristics in which a specific capacity of a hundredth cycle number with respect to a first cycle number is greater than or equal to 70% is realized.01-05-2012
20120003529ELECTRODE MATERIAL AND METHOD FOR FORMING ELECTRODE MATERIAL - An object is to provide an electrode material with high electrical conductivity and a power storage device using the electrode material. An object is to provide an electrode material with high capacity and a power storage device using the electrode material. Provided is a particulate electrode material including a core containing a compound represented by a general formula Li01-05-2012
20120208085Vinylidene Fluoride Polymer Powder and Vinylidene Fluoride Polymer Solution - Provided is a vinylidene fluoride polymer powder exhibiting excellent solubility in aprotic polar solvents, and a vinylidene fluoride polymer solution obtained from the powder and an aprotic polar solvent. The vinylidene fluoride polymer powder has an NMP penetration rate of 12 to 100% as measured by an NMP penetration test.08-16-2012
20120009471LITHIUM SECONDARY BATTERY AND CATHODE OF THE LITHIUM SECONDARY BATTERY - To provide a lithium secondary battery which has high capacity while maintaining excellent cycle characteristic. The lithium secondary battery cathode of the present invention includes a cathode collector formed of a conductive substance, and a cathode active material layer formed of a sintered lithium composite oxide sheet. The cathode active material layer is bonded to the cathode collector by the mediation of a conductive bonding layer. A characteristic feature of the present invention resides in that the cathode active material layer has a thickness of 30 μm or more, a voidage of 3 to 30%, and an open pore ratio of 70% or higher.01-12-2012
20120009470LITHIUM SECONDARY BATTERY AND CATHODE OF THE LITHIUM SECONDARY BATTERY - To provide a lithium secondary battery which has high capacity while maintaining excellent cycle characteristic. The lithium secondary battery cathode of the present invention includes a cathode collector formed of a conductive substance, and a cathode active material layer formed of a sintered lithium composite oxide sheet. The cathode active material layer is bonded to the cathode collector by the mediation of a conductive bonding layer. A characteristic feature of the present invention resides in that the cathode active material layer has a thickness of 30 μm or more, a mean pore size of 0.1 to 5 μm, and a voidage of 3% or more and less than 15%.01-12-2012
20120058394BATTERY GRID - A grid network for a battery plate is provided. The grid network includes a plurality of spaced apart grid wire elements, each grid wire element having opposed ends joined to one of a plurality of nodes. Each node includes the juncture of one of the opposed ends of a plurality of the grid wire elements to define a plurality of open spaces in the grid network. At least one of the grid wire elements has a first transverse cross-section intermediate its opposed ends that is a different shape than a second transverse cross-section at at least one of the grid wire element's opposed ends.03-08-2012
20120064404BATTERIES UTILIZING CATHODE COATINGS DIRECTLY ON NANOPOROUS SEPARATORS - Provided is a separator/cathode assembly for use in an electric current producing cell, wherein the assembly comprises a cathode current collector layer interposed between a first cathode layer and a second cathode layer and a porous separator layer on the side of the first cathode layer opposite to the cathode current collector layer, wherein the first cathode layer is coated directly on the separator layer. Also provided are methods of preparing such separator/cathode assemblies.03-15-2012
20120208083Silicon Based Electrode Formulations for Lithium-ion Batteries and Method for Obtaining It - An electrode assembly for a rechargeable Li-ion battery, comprising a current collector provided with an electrode composition comprising carboxymethyl cellulose (CMC) binder material and silicon powder provided with a layer of SiO08-16-2012
20120208084NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY - A negative electrode for lithium ion secondary batteries, including: a negative electrode current collector having a plurality of protrusions formed on a surface thereof; and a plurality of granular bodies, the granular bodies being supported on the protrusions, respectively, and including an alloy-formable active material capable of absorbing and releasing lithium ions, wherein: the granular bodies have a resin layer on their respective surfaces; and the resin layer includes a first resin component which is at least one selected from polyimides and polyacrylic acid, and a second resin component which is composed of a copolymer including vinylidene fluoride units and hexafluoropropylene units. A lithium ion secondary battery including the above negative electrode.08-16-2012
20120064402LEAD-ACID BATTERY AND METHOD FOR MANUFACTURING CURRENT COLLECTOR FOR LEAD-ACID BATTERY - Provided herein is a lead-acid battery for which the risk of breakage of a current collecting lug part of a plate while in use is eliminated by simple means. At least a positive plate group of the lead-acid battery includes: one or more plates each including a current collector having a current collecting portion formed by expanding or punching a lead alloy sheet manufactured by cold rolling, and one or more current collecting lug parts unitarily formed with the current collecting portion; and a strap formed by a cast-on strap casting method and coupled to the one or more current collecting lug parts. The current collecting lug part is formed with an elongated protrusion extending in a direction away from the current collecting portion. The elongated protrusion continuously extends in a direction toward the current collecting portion of the plate from inside the strap.03-15-2012
20120064403NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A mixed carbon material is useful for an electrode of a nonaqueous secondary battery. The material has two component materials: carbon material A and carbon material B. Both materials have high capacity and rapid charge-discharge characteristics. Carbon material A, a multilayer-structure material containing an amorphous carbon covering the surface of a graphitic particle, has particularly excellent charging-discharging properties. Carbon material B has particularly excellent electrical conductivity properties. A battery with an electrode having the mixed carbon material can have both rapid charge-discharge characteristics and high cycle characteristics.03-15-2012
20120070733CARBON MATERIAL FOR LITHIUM ION SECONDARY BATTERY - To provide a negative electrode material capable of giving a lithium ion secondary battery that is sufficiently small in the charge/discharge irreversible capacity observed at the initial cycle stage, has excellent high-temperature storage characteristics, and reduced in the gas generation at the initial cycle stage as well as during high-temperature storage.03-22-2012
20120070732NEGATIVE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAME - A negative active material for a secondary battery includes a core carbon material, and a carbide layer formed on at least a portion of an edge of the core carbon material, and has a specific surface area ratio of 1.6 or less and a sphericity ratio of 0.6 or more when the negative active material is compressed with a pressure of 1.3 ton per 1 cm03-22-2012
20120070734LITHIUM SECONDARY BATTERY AND ANODE THEREFOR - The present invention provides an anode of a lithium secondary battery comprising a current collector layer and an active material layer laminated on the current collector layer, wherein the current collector layer has a laminar structure without an opening, the active material layer has a network structure with an opening, and the shape of the opening in a planar view is a substantially regular polygon of pentagon or above and/or a substantial circle. The anode of the present invention can achieve charge-discharge-cycle property superior to that of the prior art.03-22-2012
20120156564COMPOSITE MATERIAL TAPE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING THE SAME - A composite material tape and a lithium secondary battery using the same are provided. The composite material tape includes an organic base and at least one inorganic element dispersed within the organic base. The composite material tapes of the present invention exhibit improved Insulative and heat-resistant characteristics.06-21-2012
20120156562WATER-BASED SLURRY COMPOSITION, ELECTRODE PLATE FOR ELECTRICITY STORAGE DEVICE, AND ELECTRICITY STORAGE DEVICE - A water-based slurry composition contains (1) a water-based medium containing at least water as a polar solvent, (2) at least one polymer selected from cellulose derivatives, alginic acid derivatives, starch derivatives, chitin derivatives, chitosan derivatives, polyallylamine and polyvinylamine, (3) a hydrophobic filler, and (4) a polybasic acid or a derivative thereof. The composition has a water content of 30 mass % or higher. An electrode plate for an electricity storage device, and the electricity storage device are also disclosed.06-21-2012
20120156561Welded Construction and Resistance Welding Method - A welded construction according to the present invention has a first metallic member, on one surface of which a projecting portion is formed and on the other surface of which a depressed portion corresponding to the projecting portion is formed, and a second metallic member are welded together at a welded portion which includes a summit portion of the projecting portion; wherein, on at least one of the first metallic member and the second metallic member, on its opposite surface to its surface that faces the other one of the metallic members, a recessed portion is formed that is recessed from its peripheral region towards a region which corresponds to the welded portion.06-21-2012
20120156560POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided is a positive electrode active material. The positive electrode active material includes: a small-diameter active material having an average particle diameter of about 0.5 μm and a maximum particle diameter of less than about 1 μm; and a large-diameter active material having an average particle diameter of about 5 μm to about 20 μm and a maximum particle diameter of less than about 100 μm.06-21-2012
20120156563AQUEOUS CARBON FILLER DISPERSION COATING LIQUID, CONDUCTIVITY-IMPARTING MATERIAL, ELECTRODE PLATE FOR AN ELECTRICAL STORAGE DEVICE, MANUFACTURING METHOD THEREFORE, AND ELECTRICAL STORAGE DEVICE - A water-based, carbon filler-dispersed coating formulation for forming a conductive coating film contains (1) a hydroxyalkyl chitosan as a resin binder, (2) a conductive carbon filler, and (3) a polybasic acid or its derivative in a water-based medium containing at least water as a polar solvent. In 100 parts by mass of the coating formulation, the hydroxyalkyl chitosan (1) is contained in a range of from 0.1 to 20 parts by mass, and the conductive carbon filler (2) is contained in a range of from 1 to 30 parts by mass. An electricity-imparting material, an electrode plate for an electricity storage device, a process for producing the electrode plate, and the electricity storage device are also disclosed.06-21-2012
20120251878LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR - The lithium secondary battery provided by the present invention includes a negative electrode having a negative electrode collector and a negative electrode layer including a negative electrode active material and formed on the surface of the negative electrode collector, and is characterized in that the negative electrode layer comprises a negative electrode active material layer composed primarily of a negative electrode active material, and an insulating layer composed primarily of an insulating filler and formed on the negative electrode active material layer, and the ratio (Sb/Sa) of a pore specific surface area of the insulating layer (Sb: m10-04-2012
20110104566Terminal unit for secondary battery and method of manufacturing the same - A terminal unit of a secondary battery and a method of manufacturing the same, the terminal unit including an electrode rivet, the electrode rivet being connected to an electrode assembly; a rivet terminal, the rivet terminal including a metal different from a metal of the electrode rivet; and a medium plate, the medium plate including a same metal as the electrode rivet, and being disposed between the electrode rivet and the rivet terminal so as to be overlap-weldable to the rivet terminal.05-05-2011
20110104567Rechargeable battery and method of manufacturing the same - A method of manufacturing a rechargeable battery includes continuously supplying a first electrode plate, the first electrode plate including a plurality of first active material portions with gaps therebetween on a first current collector, continuously supplying a first separator and a second separator to respective surfaces of the first electrode plate, bending the first electrode plate with the first and second separators to form a zigzag structure with bent portions, supplying a second electrode plate to an inside of each bent portion of the zigzag structure, the second electrode plate including a second active material portion on a second current collector, aligning and stacking the first electrode plate, the first separator, the second separator, and the second electrode plate, and taping the aligned and stacked first electrode plate, first separator, second separator, and second electrode plate at an outermost side thereof.05-05-2011
20120315539NANOSTRUCTURE COMPOSITE BATTERIES AND METHODS OF MAKING SAME FROM NANOSTRUCTURE COMPOSITE SHEETS - A secondary battery capable of being charged after discharging is provided. The battery includes a positive electrode, made from a sheet of carbon nanotubes infiltrated with mixed metal oxides, and a negative electrode made from a sheet of carbon nanotubes with silicon or germanium particles.12-13-2012
20120121980ALKALINE STORAGE BATTERY ELECTRODE AND ALKALINE STORAGE BATTERY - An alkaline storage battery electrode includes a conductive core member as a current collector. A plurality of through holes are formed in the core member so as to be arranged linearly in parallel with a longitudinal direction of the core member. Each of the through holes has a substantially rectangular shape. The through holes are arranged so as to be shifted in the longitudinal direction of the core member at each of lines of the linearly-arranged through holes. A displacement amount between the through holes of adjacent lines in a width direction is less than a half of a sum of a size of the through hole in the longitudinal direction of the core member and a distance between the adjacent through holes in the longitudinal direction of the core member.05-17-2012
20100248030ELECTRODE ASSEMBLY HAVING TAB-LEAD JOINT PORTION OF MINIMIZED RESISTANCE DIFFERENCE BETWEEN ELECTRODES AND ELECTROCHEMICAL CELL CONTAINING THE SAME - Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, the electrode tabs are electrically connected to an electrode lead, and the pluralities of electrode tabs are joined to the top and the bottom of the electrode lead at an electrode lead-electrode tabs joint portion such that the resistance difference between electrodes at the electrode lead-electrode tabs joint portion is minimized. Also disclosed is an electrochemical cell including the electrode assembly.09-30-2010
20100248029METHODS OF WELDING BATTERY TERMINALS - A method of manufacturing a battery including: supplying a busbar having a U-shaped portion defining a channel and characterized by a bend corner at one end of the U-shaped portion, wherein the busbar has a reduced-reflectivity treatment at least in the vicinity of the bend corner; positioning a single battery terminal in the channel formed by the U-shaped portion so that the top end of the terminal is proximate to the bend corner; directing a laser beam at the bend corner of the U-shaped portion; and with the laser beam, melting the busbar at the bend corner and forming a metallurgical bond between the busbar and the top end of the single terminal.09-30-2010
20130171519ELECTRODE COLLECTOR MATERIAL AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a method and so on for manufacturing an electrode collector which enables rapid charge and discharge and can be used in battery or capacitor electrodes. The invention is directed to an electrode collector that has fine titanium oxide particles having a large specific surface and surface-modified by means of an organic liquid metal such as vanadium, and to a method for manufacturing the same. This electrode collector can implement a collector with excellent rapid charge and discharge for use in batteries and capacitors. The fine titanium oxide particles may have an anatase-type crystal structure. These electrode collectors can be used as electrodes, lithium-ion batteries and capacitors.07-04-2013
20120129047NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery comprising electrodes including a positive electrode and a negative electrode, a separator positioned between the electrodes, and a non-aqueous electrolyte, wherein the electrodes have a collector carrying an active substance material, and the collector of at least one of the positive electrode and the negative electrode is a three-dimensional structure formed of a resin fiber covered with a metal film.05-24-2012
20120164530NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the invention is to provide a negative electrode capable of improving the large current characteristics of a nonaqueous electrolyte secondary battery while maintaining the battery capacity. A negative electrode includes a sheet-like current collector and a negative electrode mixture layer disposed on a surface of the current collector. The negative electrode mixture layer includes graphite particles and ceramic particles interposed between the graphite particles. The mean particle size of the ceramic particles is smaller than that of the graphite particles. In an X-ray diffraction pattern of the negative electrode mixture layer, the ratio R of the intensity I06-28-2012
20120164528Composite anode with an interfacial film and lithium secondary battery employing the same - A composite anode for lithium secondary battery which has an active anode material layer formed on a conductive substrate and an interfacial film coated on the active anode material layer, wherein the active anode material layer includes carbonaceous materials, other active and inactive materials, and a binder. The anode increases degree of the anode active material utilization and the cycle life and characteristic and capacity of the battery can be improved.06-28-2012
20100216021ELECTRODE PLATE - An electrode plate (Ib) for a lead acid battery comprises an electrode material supported on a metal support in which the metal support comprises a body portion and a tab portion (08-26-2010
20120214062BATTERY GRID - A battery grid is provided having a frame that includes a top element, a bottom element, a first side element, and a second side element. A current collection lug is coupled to the top element. The battery grid includes a plurality of wires provided within the frame defining a plurality of open areas. The plurality of wires includes a plurality of linear vertical wire members which extend from the top element toward the bottom element, first side element, or second side element. At least one of the linear vertical wire members includes a discontinuity terminating the linear vertical-wire member before reaching the bottom element, first side element, or second side element, the discontinuity being defined by parallel horizontal wire members defining an open space.08-23-2012
20120214065POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING THE POSITIVE ELECTRODE, LITHIUM SECONDARY BATTERY HAVING THE POSITIVE ELECTRODE, AND VEHICLE HAVING THE LITHIUM SECONDARY BATTERY - A positive electrode (08-23-2012
20120135304BATTERY ELECTRODE PRODUCTION METHOD - According to the present invention, formation of a compound material layer is carried out by a method that includes a step of forming a binder solution layer 05-31-2012
20120135303CORE-SHELL TYPE ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING THE SAME AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - The present invention relates to a core-shell type anode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery comprising the same. The anode active material for a lithium secondary battery according to the present invention comprises a carbon based material core portion; and a shell portion formed outside of the carbon based material core portion by coating the carbon based material core portion with a spinel-type lithium titanium oxide. The anode active material for a lithium secondary battery according to the present invention has the metal oxide shell portion, and thus has the improved conductivity, a high output density, and consequently excellent electrical characteristics.05-31-2012
20120135306NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode for a non-aqueous electrolyte secondary battery of the invention includes: a sheet-like current collector with a plurality of through-holes; a carbon layer formed on a surface of and in the through holes of the current collector; and a mixture layer formed on a surface of the carbon layer. The mixture layer includes an active material and a conductive agent, and the active material includes a lithium-titanium containing composite oxide with a spinel crystal structure. The current collector has a void ratio of 20 to 60%. The carbon layer has an average density of 0.05 to 0.4 g/cm05-31-2012
20120214064SOLID-STATE ELECTROLYTE BATTERY AND CATHODE ACTIVATING SUBSTANCE - The present invention provides a solid-state electrolyte battery using a cathode activating substance which functions as such in an amorphous state and has a high ionic conductivity and provides a cathode activating substance used for the same. This solid-state electrolyte battery includes a laminated body. In the laminated body, a cathode-side current collector film, cathode activating substance film, solid-state electrolyte film, anode potential formation layer and anode-side current collector film are stacked above a substrate in this order. The cathode activating substance film is made of Li08-23-2012
20120214063NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING SAME - A negative electrode for a lithium secondary battery, in which α-Fe08-23-2012
20120214061SPIRALLY WOUND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A spirally-wound non-aqueous electrolyte secondary battery including a staked electrode assembly is disclosed. The stacked electrode assembly has first and second current collectors facing region disposed at a winding start end and at a winding terminal end, respectively. A positive electrode current collector exposed portion and a negative electrode current collector exposed portion face each other through the separator in each of the first and second current collector facing regions. At least one of the positive or negative electrode current collector exposed portion has a first insulating member formed thereon in the first current collector facing region at the winding start end. At least one of the positive or negative electrode current collector exposed portion has a second insulating member formed thereon in the second current collector facing region at the winding terminal end. The second insulating member has a melting point lower than that of the first insulating member.08-23-2012
20120214059Collection structure in batteries - An electrode in a battery, e.g., a lithium-ion battery, has an electrically conductive carrier foil including (i) a terminal region for connection to an electrical circuit and (ii) at least one electrically conductive structure element configured to reduce the electrical resistance between the terminal region and a point on the carrier foil in order to improve electrical collection via the terminal region.08-23-2012
20120214060LEAD MEMBER - A lead member includes a flat conductor having a top face and a bottom face, and insulation films adhered onto both faces of the conductor at a middle portion of the conductor along a length direction of the conductor. The conductor includes a base material that is copper and a nickel plated layer on the base material. A thickness of the conductor has a value larger than, or equal to 0.05 mm, and smaller than, or equal to 0.2 mm. A width of the conductor has a value larger than, or equal to 2 mm, and smaller than, or equal to 7 mm. A thickness of the nickel plated layer has a value larger than, or equal to 2.5 μm, and smaller than, or equal to 5.0 μm.08-23-2012
20120077083ELECTRODE MIX, ELECTRODE MIX PASTE, ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode mixture containing a particulate electrode active material, an electrically conductive material and a binder, wherein the electrode active material comprises a particulate core material and a coating material adhering in the form of particles or a layer to the surface of the core material, the core material is obtained by a method comprising a step of coprecipitating two or more transition metal elements, and the binder comprises a water-soluble macromolecule or a water-dispersible macromolecule or both. An electrode comprising the electrode mixture and an electrode collector. An electrode mixture paste containing the electrode mixture and water. A nonaqueous electrolyte secondary battery comprising a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode is the electrode.03-29-2012
20120315540THREE-DIMENSIONAL NETWORK ALUMINUM POROUS BODY FOR CURRENT COLLECTOR, ELECTRODE USING THE ALUMINUM POROUS BODY, AND NONAQUEOUS ELECTROLYTE BATTERY, NONAQUEOUS ELECTROLYTIC SOLUTION CAPACITOR AND LITHIUM-ION CAPACITOR EACH USING THE ELECTRODE - It is an object of the present invention to provide an aluminum porous body for a current collector in which electric resistivity is reduced to enhance current collecting performance, and an electrode, a nonaqueous electrolyte battery, a capacitor and a lithium-ion capacitor each using the aluminum porous body for a current collector. Such a sheet-shaped three-dimensional network aluminum porous body of the present invention is a three-dimensional network aluminum porous body for a current collector including an electric resistivity in an in-plane direction and in a thickness direction of 0.5 mΩcm or less. An electrode can be configured by using the three-dimensional network aluminum porous body for a current collector, and further a nonaqueous electrolyte battery, a capacitor and a lithium-ion capacitor can be configured by using the electrode.12-13-2012
20120177992NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY AND MANUFACTURING PROCESS FOR THE SAME - To provide a negative electrode for lithium-ion secondary battery, negative electrode which has good cyclability by suppressing the active material from coming off or falling down from the current collector, and a manufacturing process for the same.07-12-2012
20120177991ELECTROCHEMICAL DEVICE AND BINDER COMPOSITION - The invention relates to an electrochemical device having a positive electrode and a negative electrode, wherein at least either of the positive electrode and the negative electrode has a current collector and an electrode layer having an electrode active material and a binder containing a polymer having a constituent unit derived from an amide group-containing monomer and a constituent unit derived from (meth)acrylic acid, such that: (i) the polymer has a swelling rate of 120 to 600% when immersed for 24 hours at 80° C. in a solution containing ethylene carbonate, diethyl carbonate, ethyl methyl carbonate and lithium hexafluorophosphate; or (ii) the polymer has a swelling rate of 110 to 300% when immersed for 24 hours at 80° C. in a solution containing propylene carbonate and methyl triethyl ammonium tetrafluoroborate.07-12-2012
20120225352ELECTRODE MATERIALS FOR RECHARGEABLE BATTERIES - Selenium or selenium-containing compounds may be used as electroactive materials in electrodes or electrochemical devices. The selenium or selenium-containing compound is mixed with a carbon material.09-06-2012
20120219856ELECTRODE MATERIALS FOR MAGNESIUM BATTERIES - A compound of formula A08-30-2012
20120315541LITHIUM-ION SECONDARY BATTERY - A lithium ion secondary battery including a negative electrode having a negative electrode active material layer containing a negative electrode active material and specific amount of a negative electrode binder; a positive electrode having a positive electrode active material layer containing a positive electrode active material and specific amount of a positive electrode binder; an electrolyte solution; and a separator, wherein: the negative electrode active material includes a carbonaceous active material; the negative electrode binder is a polymer obtained by polymerization of a monomer composition for a negative electrode containing specific amount of styrene and an ethylenically unsaturated carboxylic acid; the positive electrode active material contains a specific transition metal elements; the positive electrode binder is a polymer obtained by polymerization of a monomer composition for a positive electrode containing specific amount of acrylonitrile and an ethylenically unsaturated carboxylic acid; and a swelling degree of the positive electrode binder is 2.0 to 15.0 times.12-13-2012
20120219857BATTERY GRID - A battery grid is provided having a frame having a top element, a bottom element, a first side element, and a second side element. A current collection lug is coupled to the top element. The battery grid includes a plurality of wires provided within the frame and defining a plurality of open areas. The plurality of wires includes a vertical grid wire continuously extending from the bottom element toward the top element, and a plurality of horizontal grid wires continuously extending from the first side element or second side element, wherein the vertical grid wire intersects the plurality of horizontal grid wires, but does not intersect the first side element, second side element; or top element.08-30-2012
20120219855LITHIUM ION SECONDARY BATTERY - A positive electrode capable of achieving both of high volumetric energy density and high volumetric power density and a lithium ion secondary battery using the same are provided. A lithium ion secondary battery includes a positive electrode including a current collector with a positive active material mixture layer applied on both faces thereof, the positive active material mixture layer including active material particles, conductive additive particles and a binder. The active material particles used have a value D of an average particle diameter D08-30-2012
20120082892LITHIUM SECONDARY BATTERY - A lithium secondary battery has a positive electrode, a separator, and a negative electrode having a negative electrode current collector and a negative electrode mixture layer formed on a surface of the negative electrode current collector. The negative electrode mixture layer contains a negative electrode active material including a metal element capable of alloying with lithium. The negative electrode current collector includes a substrate made of a Cu—Fe—P alloy foil, and a surface layer provided on both surfaces of the substrate and made of pure copper. The surface layer has a Vickers hardness of 120 and less than that of the substrate. The negative electrode current collector has a proof stress of 308 MPa.04-05-2012
20120082891SECONDARY BATTERY - Disclosed are a secondary battery including an electrode assembly which includes a first electrode plate and a second electrode plate arranged as a stack, and a separator interposed between the first electrode plate and the second electrode plate, the first electrode plate including a first active material coating part formed by coating a base with a first active material and a first non-coating part, the second electrode plate including the second active material coating part formed by coating a base with a second active material and a second non-coating part, and the first non-coating part including an insulating member in a portion corresponding to the second electrode plate.04-05-2012
20120258359METHOD FOR PRODUCING ELECTRODE, METHOD FOR PRODUCING ELECTRODE PASTE, AND SODIUM SECONDARY BATTERY - The present invention provides a method for producing an electrode and a method for producing an electrode paste, and a sodium secondary battery. The method for producing an electrode includes the following steps (1) to (5) in this order: 10-11-2012
20120189912COLLECTOR FOR BIPOLAR LITHIUM ION SECONDARY BATTERY - [Problems to be Solved] To provide a method that is capable of suppressing absorption of lithium ions into the inner portion of a resin collector that is used in a bipolar lithium ion secondary battery.07-26-2012
20120189914LITHIUM SECONDARY BATTERY AND POSITIVE ELECTRODE FOR SAID BATTERY - A positive electrode for a lithium secondary battery provided by the present invention includes a positive electrode active material layer having a particulate positive electrode active material constituted by a composite oxide containing lithium and at least one type of transition metal element, and at least one type of binding material constituted by a polymer compound having at least one functional group, and a conductive carbonaceous coating film is formed on a surface of the positive electrode active material. Further, the polymer compound constituting the binding material is molecularly bound to carbon atoms constituting the carbonaceous coating film of at least a part of the positive electrode active material, whereby a composite compound is formed from the polymer compound molecularly bound to the carbon atoms and a carbon network constituting the carbonaceous coating film containing the carbon atoms.07-26-2012
20120189913ANODE FOR USE IN A LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY - A negative electrode for a lithium ion secondary battery including an active material layer that is disposed on a current collector and that contains a negative electrode active material and a binder, in which the negative electrode active material includes an alloy active material and a carbon active material, and the weight ratio between the alloy active material and the carbon active material in the active material layer is 20:80 to 50:50, and the binder contains 0.1 to 15 wt % of an ethylenically unsaturated carboxylic acid monomer polymerization unit.07-26-2012
20120189911BINDER FOR SECONDARY BATTERY EXHIBITING EXCELLENT ADHESIVE FORCE - The present invention relates to a binder for an electrode of a secondary battery, including polymer particles in which two or more types of monomers are polymerized with two or more types of cross-linking agents with mutually different molecular weights. The binder, through which the combination of the specific ingredients above, fundamentally improves electrode stability, starting from the manufacturing process of an electrode, to thereby provide a secondary battery with excellent cycle characteristics.07-26-2012
20120231331ELECTRODE INCLUDING CURRENT COLLECTOR WITH NANO-SCALE COATING AND METHOD OF MAKING THE SAME - Current collectors and methods are provided that relate to electrodes that are useful in lithium polymer electrochemical cells. The provided current collectors include a metallic substrate, a substantially uniform nano-scale carbon coating, and an active electrode material. The coating has a maximum thickness of less than about 200 nanometers.09-13-2012
20120231334POSITIVE ELECTRODE ACTIVE MATERIAL PARTICLES FOR LITHIUM ION SECONDARY BATTERIES, POSITIVE ELECTRODE USING THE SAME, AND LITHIUM ION SECONDARY BATTERY - Positive electrode active material particles for lithium ion secondary batteries include: a core particle including a first olivine-structured, lithium-containing phosphate compound which includes Fe and/or Mn and Li; and a shell layer attached to the surface of the core particle. The shell layer includes a second olivine-structured, lithium-containing phosphate compound which includes Fe and/or Mn and Li. At least the core particle includes a phosphorous compound represented by the formula (1): Me09-13-2012
20120231333LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME - A lithium secondary battery 09-13-2012
20120231332BINDER COMPOSITION FOR SECONDARY BATTERY, ELECTRODE MIXTURE FOR SECONDARY BATTERY EMPLOYING IT, AND SECONDARY BATTERY - A binder composition of the present invention is for a non-aqueous secondary battery with excellent adhesion between an electrode active material and a current collector. A degree of electrode swelling with an electrolytic solution at a high temperature is small. This binder composition can be used in production of an electrode mixture for a non-aqueous secondary battery. The binder composition can comprise a binder made of a fluorinated copolymer having repeating units derived from tetrafluoroethylene and repeating units derived from propylene, and a solvent or dispersing medium, wherein the fluorinated copolymer has a weight average molecular weight of from 10,000 to 300,000.09-13-2012
20120328943SI/C COMPOSITE, ANODE ACTIVE MATERIALS, AND LITHIUM BATTERY INCLUDING THE SAME - An Si/C composite includes carbon (C) dispersed in porous silicon (Si) particles. The Si/C composite may be used to form an anode active material to provide a lithium battery having a high capacity and excellent capacity retention.12-27-2012
20120328940LEAD-ACID BATTERY FORMULATIONS CONTAINING DISCRETE CARBON NANOTUBES - Compositions of discrete carbon nanotubes for improved performance lead acid batteries. Further disclosed is a method to form a lead-acid battery with discrete carbon nanotubes.12-27-2012
20120264013LITHIUM ION SECONDARY BATTERY - Disclosed is a lithium ion secondary battery including: a positive electrode including a positive electrode active material layer comprising a positive electrode active material capable of absorbing and releasing lithium ions, and a positive electrode current collector; a negative electrode including a negative electrode active material layer comprising an alloy-formable active material, and a negative electrode current collector; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode active material layer has an easily swellable resin having a degree of swelling with the non-aqueous electrolyte of 20% or more, and the negative electrode active material layer has a hardly swellable resin having a degree of swelling with the non-aqueous electrolyte of less than 20%.10-18-2012
20120264014COMPOSITE PARTICLES FOR ELECTROCHEMICAL ELEMENT ELECTRODE - The present invention provides a method of producing a composite particle for high density electrochemical element electrodes in electrochemical elements having low internal resistance and high capacitance. Slurry containing an electric conductive material and a binder is obtained, and the slurry is sprayed to a fluidized electrode active material to carry out fluidized-granulation, and further particles obtained by the fluidized-granulation are rolling-fluidized granulated, and thereby, composite particle for electrochemical element electrode, containing electrode active materials, electric conductive materials, and binders, and being structured of an outer layer portion (outer shell portion) and an inner layer portion (core portion) are obtained.10-18-2012
20120264015Anode Active Material For Lithium Secondary Battery And Lithium Secondary Battery Having The Same - An anode active material for a lithium secondary battery and a lithium secondary battery having the same are disclosed. The anode active material for a lithium secondary battery includes a silicon alloy consisting of silicon and at least two kinds of metals other than silicon, each having the heat of mixing with the silicon of −23 kJ/mol or less. The anode active material for a lithium secondary battery has a high capacity, and thus, is useful in fabricating a high-capacity lithium secondary battery. Also, the anode active material for a lithium secondary battery has a small crystal size of a silicon phase and consequently a small change in volume during charging/discharging, and thus, ensures excellent cycle life characteristics in applications to batteries.10-18-2012
20120270103Negative active for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same - A negative electrode for a lithium rechargeable battery includes a current collector, and a negative active material layer on the current collector, the negative active material layer including a silicon-based active material, a carbon-based active material, and an aqueous additive including an aqueous binder and an agent for increasing viscosity, the silicon-based active material being coated with an organic binder, wherein the aqueous additive is between portions of the silicon-based active material, between portions of the carbon-based active material, or between the silicon-based active material and the carbon-based active material.10-25-2012
20120276447ELECTRODE FOR A NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF MANUFACTURE OF ELECTRODE FOR A NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode for a nonaqueous electrolyte secondary battery includes a current collector and an electrode material disposed on the current collector. the electrode material has a thickness of 50 μm or larger. The electrode material contains at least active material particles, an electro-conductive material, and a crack preventive material. An average particle diameter of the crack preventive material is two times or larger than an average particle diameter of the active material particles.11-01-2012
20120276448NEGATIVE ELECTRODE MATERIAL FOR AN ELECTRICAL STORAGE DEVICE, AND NEGATIVE ELECTRODE FOR AN ELECTRICAL STORAGE DEVICE USING THE SAME - Provided is a negative electrode material for an electricity storage device, comprises, a negative electrode active material comprising a compound containing at least SnO and P11-01-2012
20120321949METHOD OF PRODUCING LITHIUM ION-STORING/RELEASING MATERIAL, LITHIUM ION-STORING/RELEASING MATERIAL, AND ELECTRODE STRUCTURE AND ENERGY STORAGE DEVICE USING THE MATERIAL - A method of producing a material capable of electrochemically storing and releasing a large amount of lithium ions is provided. The material is used as an electrode material for a negative electrode, and includes silicon or tin primary particles composed of crystal particles each having a specific diameter and an amorphous surface layer formed of at least a metal oxide, having a specific thickness. Gibbs free energy when the metal oxide is produced by oxidation of a metal is smaller than Gibbs free energy when silicon or tin is oxidized, and the metal oxide has higher thermodynamic stability than silicon oxide or tin oxide. The method of producing the electrode material includes reacting silicon or tin with a metal oxide, reacting a silicon oxide or a tin oxide with a metal, or reacting a silicon compound or a tin compound with a metal compound to react with each other.12-20-2012
20120321948POSITIVE ELECTRODE MATERIAL, MANUFACTURING METHOD THEREOF, POSITIVE ELECTRODE FOR NON-AQUEOUS RECHARGEABLE BATTERY, AND NON-AQUEOUS RECHARGEABLE BATTERY - A positive electrode material that can form a positive electrode mixture containing composition with reduced changes over time and high productivity, a manufacturing method thereof, a non-aqueous rechargeable battery less likely to swell and having a high storage characteristic during storage at high temperatures, and a positive electrode that can form the battery are provided. The object is solved by providing a positive electrode material having a coating layer of an organic silane compound on a surface of a positive electrode active material made of a lithium nickel composite oxide represented by the general compositional formula (1): Li12-20-2012
20120321946SECONDARY BATTERY - A secondary battery includes a first electrode plate including a first active material coated area in which a first substrate is coated with a first active material and a first non-coated area not coated with the first active material; a second electrode plate including a second active material coated area in which a second substrate is coated with a second active material and a second non-coated area not coated with the second active material; and a separator interposed between the first and second electrode plates, wherein at least one of the first and second electrode plates includes an electrode assembly having a waveform boundary section between one active material coated area and one non-coated area. A manufacturing method of such secondary battery is also disclosed.12-20-2012
20120321945SECONDARY BATTERY - A secondary battery including an intermediate layer having a pattern formed by carbon and a binder between a substrate and an active material layer and reinforcing adhesion between the substrate and the active material layer. In the intermediate layer, the carbon and the binder in the intermediate layer are adjacent to each other. Therefore, the active material is prevented from being detached from the substrate, thereby improving performance of the secondary battery. A small amount of the binder having strong adhesion is used in the active material slurry, thereby ensuring safety of the battery.12-20-2012
20120094176Power-Optimized And Energy-Density-Optimized Flat Electrodes For Electrochemcal Energy Stores - The invention relates to an electrode layer composite for forming planar electrodes (04-19-2012
20120328941CURRENT COLLECTOR USING THREE-DIMENSIONAL NETWORK ALUMINUM POROUS BODY, ELECTRODE USING THE CURRENT COLLECTOR, AND NONAQUEOUS ELECTROLYTE BATTERY, CAPACITOR AND LITHIUM-ION CAPACITOR WITH NONAQUEOUS ELECTROLYTIC SOLUTION, EACH USING THE ELECTRODE, AND METHOD FOR PRODUCING THE ELECTRODE - It is an object of the present invention to provide an electrode using a current collector made of an aluminum porous body which is suitably used for an electrode for a nonaqueous electrolyte battery and an electrode for a capacitor, and a method for producing the electrode. In the current collector of the present invention, a strip-shaped compressed part compressed in a thickness direction is formed at one end part of a three-dimensional network aluminum porous body and a tab lead is bonded to the compressed part by welding. The width of the compressed part is 2 to 10 mm. Further, the electrode is formed by filling the current collector with an active material.12-27-2012
20120328942DESIGN AND FABRICATION OF ELECTRODES WITH GRADIENTS - An electrode has a front face furthest from the current collector and a back face closest to the current collector and Is disposed on the current collector, and the electrode has a primary gradient of one of a chemical, physical and performance properties of the electroactive particle composition between the front and back faces, with the proviso that the primary gradient is not a bulk porosity gradient. In some embodiments, the electrode further comprises one or more secondary gradients Imposed over the primary gradient. The secondary gradient is one or more gradients selected from the group consisting of particle size gradient, particle size distribution gradient, particle morphology gradient, particle internal porosity, bulk porosity, particle volumetric charge-transfer resistance gradient, particle specific surface area gradient, particle crystalline structure gradient, particle crystallite size gradient, particle chemical composition gradient, particle robustness to cycling gradient, binder gradient, conductive additive gradient, and combinations thereof.12-27-2012
20120288760Flat and High-Density Cathodes for Use in Electrochemical Cells - The traditional method of pressing CF11-15-2012
20120288759LITHIUM SECONDARY BATTERY - A lithium secondary battery of the present invention has a positive electrode is provided with a positive electrode mix layer that includes a positive electrode active material and a conductive material. The positive electrode mix layer has two peaks, large and small, of differential pore volume over a pore size ranging from 0.01 μm to 10 μm in a pore distribution curve measured by a mercury porosimeter. A pore size of the smaller peak B of the differential pore volume is smaller than a pore size of the larger peak A of the differential pore volume.11-15-2012
20120135305Positive Active Material for Rechargeable Lithium Battery, Method of Preparing the Same, and Rechargeable Lithium Battery Including the Same - A positive active material of a positive electrode of a rechargeable lithium battery, the positive active material includes a core and a composite surrounding a surface of the core and including a phosphate-based compound and a carbon-based compound. The core being a nickel-based oxide having the chemical formula Li05-31-2012
20100167123SECONDARY BATTERY - A secondary battery including a pouch; an electrode assembly in the pouch, the electrode assembly comprising a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate; and a first electrode tab and a second electrode tab extending from the electrode assembly, wherein a portion of at least one of the first electrode tab or the second electrode tab protruding from the pouch is non-planar along its length.07-01-2010
20130011732SECONDARY BATTERY - A secondary battery includes a base material, an intermediate layer including a carbon material on the base material, and an active material layer on the intermediate layer. A secondary battery including an intermediate layer may improve adhesion between the base material and the active material layer, thereby reducing the risk of separation of the active material from the base material and improving the reliability and lifetime of the secondary battery.01-10-2013
20130011731CATHODE SLURRY COMPOSITION, CATHODE PREPARED FROM THE SAME, AND LITHIUM BATTERY COMPRISING THE CATHODE - A cathode slurry composition, a cathode prepared from the same, and a lithium battery comprising the cathode. The cathode slurry composition may include an aqueous binder, a cathode active material, and a non-transition metal oxide.01-10-2013
20130011734COPPER FOIL FOR NEGATIVE ELECTRODE CURRENT COLLECTOR OF SECONDARY BATTERY - Provided is a copper foil for a negative electrode current collector of secondary battery, wherein: roughening treatment is performed to both front and rear surfaces of a rolled copper alloy foil; an average surface roughness Ra of both the front and rear surfaces based on laser microscope measurement is 0.04 to 0.20 μm; and the ratio of surface area factor is within a range of 1.0<(C)/(C′)<1.1, when a three-dimensional surface area upon measuring the roughened surfaces with a laser microscope is (A), a two-dimensional area as a projected area upon measuring the three-dimensional surface area is (B), and a calculated value of (A)/(B) is expressed in (C), and when a three-dimensional surface area upon measuring the surfaces of a non-roughened rolled copper or copper alloy foil with a laser microscope is (A′), a two-dimensional area as a projected area upon measuring the three-dimensional surface area is (B′), and a calculated value of (A′)/(B′) is expressed in (C′). This invention aims to provide a copper foil for a negative electrode current collector of a secondary battery in which the adhesiveness of the secondary battery active material is superior, and which can reduce the variation in the area weight of the secondary battery active material, and has superior weather resistance and thermal resistance.01-10-2013
20130011733ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - An electrode for a lithium secondary battery, the electrode including: an electrode active material; and a composite including a clay and a polymer intercalated between layers of the clay, a method of manufacturing the electrode, and a lithium secondary battery including the electrode.01-10-2013
20130011730POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY - Disclosed is a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive electrode includes a current collector; a positive active material layer including a positive active material and a vanadium oxide; and a vanadium oxide-contained coating layer formed between the current collector and the positive active material layer.01-10-2013
20130017441PLATING TECHNIQUE FOR ELECTRODE - Articles and methods for forming protected electrodes for use in electrochemical cells, including those for use in rechargeable lithium batteries, are provided. In some embodiments, the articles and methods involve an electrode that does not include an electroactive layer, but includes a current collector and a protective structure positioned directly adjacent the current collector, or separated from the current collector by one or more thin layers. Lithium ions may be transported across the protective structure to form an electroactive layer between the current collector and the protective structure. In some embodiments, an anisotropic force may be applied to the electrode to facilitate formation of the electroactive layer.01-17-2013
20130017442CATHODE ACTIVE MATERIAL COMPOSITION, CATHODE PREPARED BY USING THE SAME, AND LITHIUM BATTERY INCLUDING THE CATHODEAANM Cha; Jun-KyuAACI Yongin-siAACO KRAAGP Cha; Jun-Kyu Yongin-si KRAANM Han; Seung-HunAACI Yongin-siAACO KRAAGP Han; Seung-Hun Yongin-si KRAANM Jeong; Hye-SunAACI Yongin-siAACO KRAAGP Jeong; Hye-Sun Yongin-si KRAANM Kim; Ki-JunAACI Yongin-siAACO KRAAGP Kim; Ki-Jun Yongin-si KR - A cathode active material composition includes a cathode active material, a water-based binder, and a transition metal oxide. A cathode is prepared using the cathode active material composition. A lithium battery includes the cathode. The lithium battery has improved high-rate characteristics and lifespan characteristics by preventing an increase in internal resistance due to the corrosion of an electrode base material.01-17-2013
20130017444ELECTRODES FOR SECONDARY BATTERIES AND SECONDARY BATTERIES USING THE SAMEAANM Honkura; KoheiAACI HitachiAACO JPAAGP Honkura; Kohei Hitachi JP - Disclosed is an electrode for a secondary battery having an electrode compound layer including an electrode active material formed on a current collector, in which the electrode compound layer is provided with a plurality of voids disposed along the thickness direction of the electrode compound layer, the depth of the void is 50% or more of the thickness of the electrode compound layer, the projection area of the voids is 20% or less of the entire projection area of the electrode for a secondary battery, and the length of the cross section of the void is 5 μm to 100 μm.01-17-2013
20130017443POWER STORAGE DEVICE, ELECTRODE, AND MANUFACTURING METHOD THEREOFAANM YAMAZAKI; ShunpeiAACI TokyoAACO JPAAGP YAMAZAKI; Shunpei Tokyo JP - To provide a power storage device with improved cycle characteristics. In the power storage device, a conductive catalyst layer is provided in contact with a surface of an active material layer formed of silicon or the like and a carbon layer is provided over the conductive catalyst layer. The carbon layer is formed by a CVD method using an effect of the catalyst layer. The carbon layer formed by a CVD method is crystalline and helps prevent an impurity such as an SEI from being attached to a surface of an electrode of the power storage device, leading to improvements in cycle characteristics of the power storage device.01-17-2013
20130017440ELECTRODE FOR SECONDARY CELL, METHOD FOR PRODUCING THE SAME, AND SECONDARY CELLAANM TAKANO; YasuoAACI Yokohama-shiAACO JPAAGP TAKANO; Yasuo Yokohama-shi JP - A secondary cell electrode includes a mix layer containing an active substance, a conductive agent, and a binder which is swollen by coexistence with an electrolytic solution and thus has a volume thereof increased; and a current collector formed of a conductive metal foil, the mix layer being located right on the current collector. The current collector has, in a surface thereof, a first concaved portion which is opened and a first convexed portion forming a wall of the first concaved portion; at least a part of a side surface of at least either one of the first concaved portion and the first convexed portion includes at least either one of a second concaved portion and a second convexed portion; and a mixture containing at least either one of the binder, the conductive material and the active substance is put into a space in the first concaved portion.01-17-2013
20130022867ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY AND MANUFACTURING PROCESS FOR THE SAME - Even in a case where an active material, which exhibits large volumetric changes being accompanied by the absorption and release of lithium, is used, the active material is suppressed from falling down, thereby providing an electrode for lithium-ion secondary battery that exhibits a good cyclability.01-24-2013
20130022866CARBON-COATED LITHIUM IRON PHOSPHATE OF OLIVINE CRYSTAL STRUCTURE AND LITHIUM SECONDARY BATTERY USING THE SAME - Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the lithium iron phosphate has a composition represented by the following Formula 1 and carbon (C) is coated on the particle surface of the lithium iron phosphate containing a predetermined amount of sulfur (S).01-24-2013
20130022865CURRENT COLLECTOR AND NONAQUEOUS SECONDARY CELL - A current collector having a multi-layered structure comprising a resin layer (01-24-2013
20130171515ANODE MATERIAL AND ANODE ELECTRODE PLATE - An anode material is provided for a surface of an electrode. The anode material comprises carbon-containing substrates and unsaturated compounds. At least one chemical bond is formed between the unsaturated compounds and the surfaces of the carbon-containing substrates.07-04-2013
20130171516LITHIUM ION BATTERY ELECTRODE - A lithium ion battery electrode includes an electrode material layer. The lithium ion battery electrode further includes a current collector. The current collector is located on a surface of the electrode material layer. The current collector is a carbon nanotube layer. The carbon nanotube layer consists of a number of carbon nanotubes.07-04-2013
20130171517CURRENT COLLECTOR, ELECTRODE OF ELECTROCHEMICAL BATTERY, AND ELECTROCHEMICAL BATTERY USING THE SAME - A current collector includes a metal foil and a graphene film coated on a surface of the current collector. An electrode of an electrochemical battery includes the current collector and an electrode active material layer coated on a surface of the current collector. An electrochemical battery is also provided which including the electrode.07-04-2013
20130171520AQUEOUS POLYIMIDE PRECURSOR SOLUTION COMPOSITION AND METHOD FOR PRODUCING AQUEOUS POLYIMIDE PRECURSOR SOLUTION COMPOSITION - A method for producing an aqueous polyimide precursor solution composition, including reacting a tetracarboxylic dianhydride and a diamine, which has a solubility in water at 25° C. of 0.1 g/L or more, in the presence of an imidazole, using water as a reaction solvent to provide an aqueous polyimide precursor solution composition.07-04-2013
20080241686Lead Storage Battery - A lead storage battery of the present invention has an electrode plate pack comprising a plurality of negative electrode plates in each of which a negative electrode active material layer is retained by a negative electrode grid, a plurality of positive electrode plates in each of which a positive electrode active material layer is retained by a positive electrode grid, and a plurality of separators separating the positive electrode plate and the negative electrode plate; a positive electrode connecting member connected to each positive electrode plate of the electrode plate pack, and a negative electrode connecting member connected to each negative electrode plate of the electrode plate pack. The positive and negative electrode grids, and the positive and negative electrode connecting members comprise a Pb alloy including at least one of Ca and Sn; the negative electrode active material layer includes Sb; and the separator includes silica.10-02-2008
20100086850SECONDARY BATTERY WITH TERMINAL PLATE - A secondary battery including: an electrode assembly including two electrode taps; and a cap assembly including a terminal plate. The terminal plate includes a tap connecting portion that is laser welded to one of the electrode taps. The tap connecting portion includes a curved portion that has an apex that extends along the length of the terminal plate, to which the one electrode tap is welded.04-08-2010
20110262808BATTERY GRID - A battery grid includes a frame that includes a top element, a bottom element, a first side element, and a second side element. The battery grid also includes a plurality of wires provided within the frame and defining a plurality of open areas and a current collection lug extending from the top element in a first direction. The battery grid further includes at least one feature provided in the battery grid that is configured to reduce the amount of growth of the battery grid in the first direction due to corrosion of the battery grid during the life of the battery grid.10-27-2011
20130177804METHODS FOR MAKING BATTERY ELECTRODE SYSTEMS - Methods for making battery electrode system are disclosed herein. In an example of the method, a mixture of a polymer binder, an active material and a conductive filler is deposited on a current collector. The deposited mixture is exposed to an external field having a field direction that is normal to a surface of the current collector. The exposure aligns, outward from and normal to the surface of the current collector, the active material and the conductive filler to form a plurality of discrete structures that extend outward from and normal to the surface of the current collector and are respectively aligned with a field line of the external field. Each of the plurality of discrete structures includes some of the active material and some of the conductive filler.07-11-2013
20130209876Binder For Secondary Battery Exhibiting Excellent Adhesion Force - Provided is a binder for secondary battery electrodes comprising polymer particles obtained by polymerizing three or more kinds of monomers wherein the polymer particles have a mean particle diameter of 0.3 μm to 0.7 μm. The binder exhibits superior adhesion force to electrode current collectors and excellent support force to the active material and basically improves safety of electrodes, thus providing a secondary battery with superior cycle characteristics.08-15-2013
20120251879ALUMINUM FOIL WITH CARBONACEOUS PARTICLES DISPERSED AND SUPPORTED THEREIN - An object of the present invention is to provide an aluminum foil that can make a positive electrode current collector thinner for size reduction and higher energy density of electrical storage devices, be produced easily and has a low surface resistance. An aluminum foil of the present invention as a means for achieving the object is characterized in that carbonaceous particles are dispersed and supported therein. The aluminum foil with carbonaceous particles dispersed and supported therein of the present invention can be produced by electrolysis.10-04-2012
20120251877SECONDARY LITHIUM ION BATTERY - A secondary lithium ion battery includes an anode electrode having an anode current collector and an anode active material formed on the anode current collector, a cathode electrode having a cathode current collector and a cathode active material formed on the cathode current collector; a separator interposed between the anode electrode and the cathode electrode, and a nonaqueous liquid electrolyte. The anode active material contains lithium titanate and amorphous carbon. The hybrid anode electrode containing lithium titanate and amorphous carbon of the secondary lithium ion battery according to the present invention can reduce swelling of the secondary lithium ion battery during storage or cycle and prolong life span of the secondary lithium ion battery.10-04-2012
20130171521POSITIVE ELECTRODE FOR SECONDARY CELL - A positive electrode for secondary cell comprising a current collector which is comprised of aluminum or an aluminum alloy and a positive electrode active material layer, wherein the positive electrode active material layer contains a positive electrode active material, a water-based binder, an organic phosphonic acid compound, and a polyvalent metal compound is provided. According to the present invention, a positive electrode for secondary cell which is high in initial capacity and excellent in rate characteristics and high temperature cycle characteristics can be provided.07-04-2013
20130171518CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERIES - Disclosed is a cathode active material represented by the following Formula 1, the cathode active material being in the form of a solid solution or a composite, and a secondary battery including the cathode active material.07-04-2013
20130115512BUCKLED SILICON NANOSTRUCTURES ON ELASTOMERIC SUBSTRATES FOR RECHARGEABLE LITHIUM ION BATTERIES - A flexible silicon anode includes a flexible substrate, a layer of silicon with a thickness of 1 μm or less adhered to the flexible substrate, and a current collector in contact with the layer of silicon. A lithium ion battery cell includes a flexible silicon anode, a current collector in contact with the layer of silicon; a lithium cathode; a separator between the silicon anode and the lithium cathode; an electrolyte in contact with the silicon anode and the lithium cathode; and an electrical connection between the silicon anode and the lithium cathode. Forming the flexible silicon anode can include etching a silicon-on-insulator structure to form a silicon layer on the silicon substrate, treating the silicon layer, contacting the treated silicon layer with a flexible substrate, and separating the flexible substrate and the silicon substrate, thereby transferring the treated silicon layer from the silicon substrate to the flexible substrate.05-09-2013
20130095382RECHARGEABLE LITHIUM BATTERY - A rechargeable lithium battery that includes a negative electrode including a negative active material; a positive electrode including polyacrylonitrile and a positive active material which is capable of fully charging at about 4.3V or more; and a non-aqueous electrolyte.04-18-2013
20130101897LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - Provided is a lithium secondary battery in which negative-electrode active material particles containing silicon and/or a silicon alloy are used and which prevents the occurrence of breakage of a binder itself and peel-off of the binder at the interfaces with the negative-electrode active material and the negative-electrode current collector and has a high energy density and an excellent cycle characteristic. The lithium secondary battery includes: a negative electrode in which a negative-electrode active material layer including negative-electrode active material particles containing silicon and/or a silicon alloy and a binder is formed on a surface of electrically conductive metal foil serving as a negative-electrode current collector; a positive electrode; and a nonaqueous electrolyte, wherein the binder contains a polyimide resin including a crosslinked structure formed by imidization of a hexavalent or higher-valent carboxylic acid or an anhydride thereof with a diamine.04-25-2013
20130101896RECESSED TAB FOR HIGHER ENERGY DENSITY AND THINNER BATTERIES - Various embodiments are described herein for an electrode assembly for a battery and a method of making the electrode assembly. The electrode assembly comprises an active material layer having a recess formed therein at an outer surface of the active material layer, the recess extending from a side facet of the active material layer toward an interior portion of the active material layer; a current collector layer supported on and in electrical contact with the outer surface of the active material layer; and a tab element supported partially within the recess and in electrical contact with at least one of the active material layer and the current collector layer, the tab element being adapted to provide an electrical connection for the electrode assembly.04-25-2013
20130130107SECONDARY BATTERY - The secondary battery according to the present invention includes an electrode (05-23-2013
20130130104CURRENT COLLECTOR, ENERGY STORAGE ELEMENT, AND METHOD OF MANUFACTURING CURRENT COLLECTOR - A positive electrode current collector includes a terminal connecting portion, a first electrode connecting portion including a first surface extending forward and downward from a right frontal portion, a second electrode connecting portion including a second surface extending forward and downward from a left frontal portion and opposing the first surface, a first twisted portion having an end portion connected to the right frontal portion and the other end portion connected to an upper end portion, and a second twisted portion having an end portion connected to the left frontal portion and the other end portion connected to an upper end portion. A distance between the first surface and the second surface is larger than a distance between the center of the right frontal portion and the center of the left frontal portion.05-23-2013
20130130103CATHODE AND LITHIUM BATTERY USING THE SAME - A cathode and a battery including a cathode active material including a layer-structured material having a composition of xLi05-23-2013
20130143117PASTE FOR FORMING CONDUCTIVE PROTECTION LAYER ON COLLECTOR LAMINATE IN NON-AQUEOUS RECHARGEABLE ELECTRICITY-STORAGE DEVICE - The present invention provides a conductive protective layer-forming paste for current collector laminates which can be used even for high voltage designs to protect current collectors from corroding without loss of cell characteristics, and a current collector laminate, an electrode laminate, and nonaqueous secondary cells (e.g. a lithium secondary cell, an electric double layer capacitor) that include a conductive protective layer formed therefrom. The paste for forming conductive protective layers for current collector protection includes: polytetrafluoroethylene; and a conductive filler (b). The current collector laminate includes: a conductive protective layer (A); and a current collector (B), the conductive protective layer (A) being formed by coating the paste for forming conductive protective layers onto the current collector (B).06-06-2013
20130143116Binder Resin for Electrode of Nonaqueous Electrolyte Secondary Battery, Slurry Composition, Electrode for Nonaqueous Electrolyte Secondary Battery, and Nonaqueous Electrolyte Secondary Battery - A binder resin for an electrode of a nonaqueous electrolyte secondary battery is provided, which is used as the binder resin in a slurry composition for an electrode of a nonaqueous electrolyte secondary battery, containing a binder resin, an active material and an organic solvent.06-06-2013
20130149605NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY, AND MANUFACTURING METHODS THEREOF - A lithium secondary battery which has high charge-discharge capacity, can be charged and discharged at high speed, and has little deterioration in battery characteristics due to charge and discharge is provided. A negative electrode includes a current collector and a negative electrode active material layer. The current collector includes a plurality of protrusion portions extending in a substantially perpendicular direction and a base portion connected to the plurality of protrusion portions. The protrusion portions and the base portion are formed using the same material containing titanium. A top surface of the base portion and at least a side surface of the protrusion portion are covered with the negative electrode active material layer. The negative electrode active material layer may be covered with graphene.06-13-2013
20130149604ELECTRODE, SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, ELECTRIC POWER STORAGE SYSTEM, ELECTRIC POWER TOOL, AND ELECTRONIC APPARATUS - A secondary battery includes: a cathode including a cathode active material layer on a cathode current collector; an anode; and an electrolytic solution. The cathode active material layer includes spherical active materials each being a secondary particle and planular active materials each being a secondary particle. The spherical active materials are each included in a region closer to the cathode current collector, and the planular active materials are each included in a region farther from the cathode current collector. Primary particles of the spherical active materials have an average particle diameter that is larger than an average particle diameter of primary particles of the planular active materials.06-13-2013
20130157125REINFORCED BATTERY ELECTRODES - The gravimetric and volumetric efficiency of lithium ion batteries may be increased if high capacity materials like tin and silicon may be employed as the lithium-accepting host in the negative electrode of the battery. But both tin and silicon, when fully charged with lithium, undergo expansions of up to 300% and generate appreciable internal stresses which have potential to spall off material from the electrode on each discharge-charge cycle, resulting in a progressive reduction in battery capacity, also known as battery fade. A method of reinforcing such electrode materials by incorporating within them fiber reinforcements or shaped, elongated reinforcements fabricated of shape memory alloy is described. Electrode materials incorporating such reinforcements are less prone to damage under applied stress and so less prone to battery fade.06-20-2013
20120282521ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREOF, AND ELECTRODE AND LITHIUM BATTERY CONTAINING THE SAME - An electrode active material, a method of manufacturing the same, and an electrode and a lithium battery adopting the same. The electrode active material includes a core capable of occluding and emitting lithium; and a surface treatment layer formed on at least a portion of a surface of the core, wherein the surface treatment layer includes a lithium-free oxide having a spinel structure.11-08-2012
20130157126ELECTRODE ASSEMBLY OF LITHIUM SECONDARY BATTERY - Disclosed is an electrode assembly of a lithium secondary battery, including an anode plate, a cathode plate, a separator for separating the anode plate and the cathode plate and conducting lithium ions of an electrolyte, and a composite film disposed between the anode plate and the separator and/or between the cathode plate and the separator. The composite film includes 5 to 95 parts by weight of an inorganic clay and 95 to 5 parts by weight of an organic polymer binder.06-20-2013
20130157127ACTIVE MATERIAL FOR RECHARGEABLE BATTERY, RECHARGEABLE BATTERY, AND ELECTRONIC APPARATUS - A rechargeable battery including: a positive electrode; a negative electrode including active material; and an electrolytic solution, in which the active material is capable of occluding and releasing lithium ions and includes Si and O as constituent elements, and an atomic ratio (Si/(Si+O)) of Si with respect to Si and O is 30 atomic % to 75 atomic % in a surface of the active material.06-20-2013
20130157128ELECTRODE FOR LITHIUM BATTERIES AND ITS METHOD OF MANUFACTURE - The electrode for a lithium battery comprises a porous current collector made of woven or nonwoven carbon fibers.06-20-2013
20130157129COATING LIQUID, CONDUCTIVE COATING FILM, ELECTRODE PLATE FOR ELECTRICITY STORAGE DEVICE, AND ELECTRICITY STORAGE DEVICE - Disclosed is a coating formulation useful in forming a conductive coating film on a surface of a collector for constructing an electrode plate for an electricity storage device. The coating formulation contains (A) a polymeric acid, (B) a vinyl carboxylate copolymer represented by the following formula (1):06-20-2013
20130157130METHOD FOR PRODUCING BATTERY ELECTRODE - A main object of the present invention is to provide a method for producing a battery electrode that has excellent adhesion between a collector and an active material layer by suppressing a migration phenomenon. The method for producing a battery electrode of the present invention is a method for producing a battery electrode 06-20-2013
20130183581SUBSTRATE FOR ELECTRODE OF ELECTROCHEMICAL CELL - An improved substrate is disclosed for an electrode of an electrochemical cell. The improved substrate includes a core material surrounded by a coating. The coating is amorphous such that the coating includes substantially no grain boundaries. The core material may be one of lead, fiber glass, and titanium. The coating may be one of lead, lead-dioxide, titanium nitride, and titanium dioxide. Further, an intermediate adhesion promoter surrounds the core material to enhance adhesion between the coating and the core material.07-18-2013
20130122366CATHODE PLATE FOR SECONDARY BATTERY, MANUFACTURING METHOD THEREOF AND SECONDARY BATTERY PROVIDED WITH THE CATHODE PLATE - Disclosed is a cathode plate for a secondary battery, which includes a collector, and a cathode active material layer, wherein the cathode active material layer is formed of multiple layers of coating films formed on a surface of the collector and obtained by application and drying of an aqueous paste, which is obtained by kneading and dispersing an iron lithium phosphate material having an olivine structure as the cathode active material, an electroconductive material, a water-soluble thickner, a binder, and water as a dispersion medium.05-16-2013
20130122365MULTILAYER MATERIAL BASED ON ACTIVE LITHIUM, METHOD OF PREPARATION AND APPLICATIONS IN ELECTROCHEMICAL GENERATORS - A method for preparing a multilayer material based on active lithium, by depositing a film of active lithium on a protective layer at a sufficient speed so that substantially no oxidation of the lithium occurs, and/or during a sufficient time for the adhesion of the lithium to develop after contact with the protective layer. The multilayer material, when incorporated in an electrochemical battery as an anode, has excellent impedance stability and no formation of dendrites during the cycling. Batteries where the anode is the multilayer material are particularly efficient in terms of their coulomb efficiency.05-16-2013
20130122364BINDER FOR SECONDARY BATTERY PROVIDING EXCELLENT ADHESION STRENGTH AND CYCLE PROPERTY - Provided is a binder for secondary battery electrodes comprising a copolymer consisting of 79 to 98% by weight of at least one selected from the group consisting of (a) an ethylenically unsaturated carbonic acid ester monomer and (b) a vinyl monomer and a nitrile monomer, (c) 1 to 20% by weight of an ethylenically unsaturated carbonic acid monomer, and (d) 1 to 20% by weight of a phosphorus (P)-containing monomer including a P═O bond and one or more reactive double bonds in a molecular structure thereof, based on the total weight of the binder. The binder fundamentally improves stability of an electrode in the process of fabricating the electrode, thus providing secondary batteries with superior cycle properties.05-16-2013
20130122363CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed is a cathode active material for secondary batteries comprising at least one compound selected from the following formula 1: (1−s−t)[Li(Li05-16-2013
20110300441POWER STORAGE DEVICE - A power storage device including a positive electrode in which a positive electrode active material is formed over a positive electrode current collector and a negative electrode which faces the positive electrode with an electrolyte interposed therebetween is provided. The positive electrode active material includes a first region which includes a compound containing lithium and one or more of manganese, cobalt, and nickel; and a second region which covers the first region and includes a compound containing lithium and iron. Since a superficial portion of the positive electrode active material includes the second region containing iron, an energy barrier when lithium is inserted into and extracted from the surface of the positive electrode active material can be decreased.12-08-2011
20110311869POSITIVE ELECTRODE ACTIVE MATERIAL WITH HIGH CAPACITY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A high capacity lithium secondary battery includes a lithium manganese oxide having a layered structure exhibiting a great irreversible capacity in the event of overcharging at a high voltage and a spinel-based lithium manganese oxide. Because it is activated at a high voltage of 4.45 V or higher based on a positive electrode potential, additional lithium for utilizing a 3V range of the spinel-based lithium manganese oxide can be provided and an even profile in the entire SOC area can be obtained. Because the lithium secondary battery includes the mixed positive electrode active material including the spinel-based lithium manganese oxide and the lithium manganese oxide having a layered structure, and is charged at a high voltage, its stability can be improved. Also, the high capacity battery having a large available SOC area and improved stability without causing an output shortage due to a rapid voltage drop in the SOC area can be implemented.12-22-2011
20110311868ACTIVE MATERIAL, ELECTRODE CONTAINING SAME, LITHIUM-ION SECONDARY BATTERY WITH THE ELECTRODE, AND METHOD OF MANUFACTURING ACTIVE MATERIAL - The method of manufacturing an active material in accordance with the first aspect of the invention yields an active material containing LiVOPO12-22-2011
20110311867NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY - Disclosed is a negative electrode active material for a lithium ion secondary battery, which is capable of further improving the charge/discharge cycle characteristics. Also disclosed is a lithium ion secondary battery which uses the negative electrode active material for a lithium ion secondary battery. The negative electrode active material for a lithium ion secondary battery is composed of composite particles each of which has a core/shell structure configured of a core part that is formed from a polymer and a shell part that is formed of a metal layer. The metal layer of the shell part is formed by metal plating. Preferably, the metal layer comprises at least a metal layer (a1) that is formed by electroless plating and a metal layer (a2) that is formed by electrolytic plating, in this order from the core part side.12-22-2011
20130189578CATHODE ACTIVE MATERIAL COMPRISING LITHIUM MANGANESE-BASED OXIDE AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY BASED UPON THE SAME - Disclosed is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure represented by Formula 1 below and high lithium ion diffusivity since (440) planes are predominantly formed in a crystal structure thereof.07-25-2013
20130189576FADE-RESISTANT HIGH CAPACITY ELECTRODES FOR A LITHIUM-ION BATTERY - The gravimetric and volumetric efficiency of lithium ion batteries may be increased if higher capacity materials like tin and silicon are substituted for carbon as the lithium-accepting host in the negative electrode of the battery. But both tin and silicon, when fully charged with lithium, undergo expansions of up to 300% and generate appreciable internal stresses. These internal stresses, which will develop on each discharge-charge cycle, may lead to a progressive reduction in battery capacity, also known as battery fade. The effects of the internal stresses may be significantly reduced by partially embedding tin or silicon nanowires in the current collector. Additional benefit may be obtained if a 5 to 50% portion of the nanowire length at its embedded end are coated or masked with a composition which impedes lithium diffusion. Methods for embedding and masking the nanowires are described.07-25-2013
20130189577APPARATUS AND METHOD FOR HOT COATING ELECTRODES OF LITHIUM-ION BATTERIES - A method and apparatus for fabricating high-capacity energy storage devices is provided. In one embodiment, a deposition system for manufacturing energy storage electrodes is provided. The deposition system comprises a transfer mechanism for transferring a substrate, an active material supplying assembly for depositing an electro-active powder mixture onto the substrate, and a heat source for drying the as-deposited electro-active powder mixture.07-25-2013
20130189575POROUS SILICON BASED ANODE MATERIAL FORMED USING METAL REDUCTION - A porous silicon based material comprising porous crystalline elemental silicon formed by reducing silicon dioxide with a reducing metal in a heating process followed by acid etching is used to construct negative electrode used in lithium ion batteries. Gradual temperature heating ramp(s) with optional temperature steps can be used to perform the heating process. The porous silicon formed has a high surface area from about 10 m07-25-2013
20120288758THREE-DIMENSIONAL NETWORK ALUMINUM POROUS BODY FOR CURRENT COLLECTOR, ELECTRODE USING THE ALUMINUM POROUS BODY, AND BATTERY, CAPACITOR AND LITHIUM-ION CAPACITOR EACH USING THE ELECTRODE - It is an object of the present invention to provide a sheet-shaped three-dimensional network aluminum porous body for a current collector which is suitably used for electrodes for nonaqueous electrolyte batteries and electrodes for capacitors, an electrode and a capacitor each using the same. In such a three-dimensional network aluminum porous body for a current collector, the aluminum porous body has been made to have a compressive strength in a thickness direction of 0.2 MPa or more in order to efficiently fill an active material into the sheet-shaped three-dimensional network aluminum porous body.11-15-2012
20120009472NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode for a nonaqueous electrolyte secondary battery includes a negative-electrode current collector, a first negative-electrode active material layer, and a second negative-electrode active material layer. The first negative-electrode active material layer is formed on the negative-electrode current collector. The first negative-electrode active material layer contains graphite as a first negative-electrode active material. The second negative-electrode active material layer is formed on the first negative-electrode active material layer. The second negative-electrode active material layer contains a lithium titanate composite oxide as a second negative-electrode active material.01-12-2012
20120021282POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR PRODUCING THE SAME - A positive electrode for a nonaqueous electrolyte secondary battery, which has excellent nonaqueous electrolyte permeability, a nonaqueous electrolyte secondary battery including the positive electrode, and a method for producing the same. A positive electrode for a nonaqueous electrolyte secondary battery includes a positive electrode current collector, and a positive electrode active material layer. The positive electrode active material layer is formed on the positive electrode current collector and contains a positive electrode active material, a binder, and an acid anhydride.01-26-2012
20120021281CURRENT CARRIER FOR AN ENERGY STORAGE DEVICE - A current collector plate for an energy storage device comprising a first current collector, a bonding layer connected to the first current collector; and, at least one current carrier disposed at least partially between the first current collector and the bonding layer.01-26-2012
20120021280COMPOSITE ELECTRODE AND ELECTRONIC DEVICE INCLUDING THE SAME - A composite electrode includes a plate-shaped conductor; a plurality of auxiliary electrodes disposed such that ends of the plurality of auxiliary electrodes are connected to a surface of the plate-shaped conductor and the plurality of auxiliary electrodes extend from the surface of the plate-shaped conductor; and an active material layer formed between the plurality of auxiliary electrodes so as to be in contact with the plate-shaped conductor. When the height of the plurality of auxiliary electrodes is defined as h, the center-to-center spacing of auxiliary electrodes facing each other in the plurality of auxiliary electrodes or the spacing of auxiliary electrodes facing each other in the plurality of auxiliary electrodes is h or more and 2h or less.01-26-2012
20120028117FLUORINATED BINDER COMPOSITE MATERIALS AND CARBON NANOTUBES FOR POSITIVE ELECTRODES FOR LITHIUM BATTERIES - The present invention relates to a positive electrode composite material for Li-ion battery, to the preparation method thereof, and to the use thereof in a Li-ion battery. The composite material according to the invention includes: a) at least one conductive additive including carbon nanotubes at a content between 1 and 2.5 wt %, preferably between 1.5 and 2.2 wt %, relative to the total weight of the composite material; b) an active electrode material capable of reversibly forming an insertion compound with lithium, having an electrochemical potential greater than 2V relative to the Li/Li02-02-2012
20120028116COMPOSITION FOR PRODUCING POSITIVE ELECTRODE FOR ELECTRICITY STORAGE DEVICE, POSITIVE ELECTRODE FOR ELECTRICITY STORAGE DEVICE MADE WITH SAID COMPOSITION, AND ELECTRICITY STORAGE DEVICE COMPRISING SAME - This invention relates to a composition for producing a cathode for an electricity storage device, including carbon nanofibers prepared by electrospinning a spinning solution including a cathode active material, a conductive material and a carbon fiber precursor; and a binder, and to a cathode for an electricity storage device made with the composition and to an electricity storage device including the cathode. The composition for producing a cathode includes carbon nanofibers instead of part or all of a conductive material, a dispersant and/or a binder, so that the cathode has remarkably increased specific surface area and electrical conductivity (decreased resistance), thus maximizing the efficiency of the cathode active material and the capacity.02-02-2012
20120028115ELECTRODE COMPOSITE MATERIAL, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME - A cathode composite material includes a cathode active material particle having a surface, and a continuous aluminum phosphate layer coated on the surface of the cathode active material particle. A material of the cathode active material particle is layered type lithium nickel oxide. The present disclosure also relates to a lithium ion battery and a method for making the cathode composite material.02-02-2012
20120028114ELECTRODE COMPOSITE MATERIAL, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME - A cathode composite material includes a cathode active material particle having a surface, and a continuous aluminum phosphate layer coated on the surface of the cathode active material particle. A material of the cathode active material particle is spinel type lithium manganese oxide. The present disclosure also relates to a lithium ion battery and a method for making the cathode composite material.02-02-2012
20130196228BATTERY - A battery includes an electrode plate, an electrode terminal that has a curved end face, and a connecting portion that electrically connects the electrode plate and the curved end face and that is physically connected to the curved end face along the shape of the curved end face.08-01-2013
20130196226ELECTRODE ASSEMBLY AND SECONDARY BATTERY HAVING THE SAME - A secondary battery includes an electrode assembly, which has improved safety by reducing a density of an active material centrally positioned in the electrode assembly. In the secondary battery, an electrode assembly includes a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate, the first electrode plate including a first electrode current collector and a first active material layer on the first electrode current collector, the first active material layer including a first active material, a binder and a conductive agent, and a portion of the first active material layer at a central portion of the electrode assembly including the first active material at a lower density than a density of the first active material at a portion of the first active material layer at a peripheral portion of the electrode assembly.08-01-2013
20130196227POSITIVE ELECTRODE, METHOD OF MANUFACTURING THE SAME, AND LITHIUM BATTERY COMPRISING THE POSITIVE ELECTRODE - A positive electrode including a current collector and a positive active material layer formed on the current collector, wherein the positive active material layer includes a positive active material, a conductive agent, and the boron-containing inorganic binder having a network structure; a method of manufacturing the same; and a lithium battery including the positive electrode.08-01-2013
20130196229ENERGY STORAGE ELEMENT, METAL COMPONENT, AND ENERGY STORAGE ELEMENT MANUFACTURING METHOD - An energy storage element includes: a metal component that is a metal plate member that includes a protrusion extending from a surface of the metal plate member, and is provided as a portion of a container. The protrusion includes: a tubular portion provided at a tip end of the protrusion in an extending direction, and a base portion that is solid and extends from the surface of the metal component to the tubular portion in the extending direction.08-01-2013
20130196230COATING SOLUTION, ELECTRIC COLLECTOR, AND METHOD FOR PRODUCING ELECTRIC COLLECTOR - A coating solution comprising (A) water or a mixed solvent of water and an organic solvent, (B) an electrical conducting material, and (C) at least one selected from the group consisting of polysaccharides and polysaccharide derivatives as essential components, and (D) at least one selected from the group consisting of a polybasic organic acid and a polybasic organic acid derivative as an optional component, wherein mass W08-01-2013
20130202961CATHODE UNIT FOR AN ALKALI METAL/SULFUR BATTERY - The present invention relates to a cathode unit for an alkali metal-sulphur battery, comprising: 08-08-2013
20120070736NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND BATTERY USING SAME - There is provided a negative electrode for a lithium-ion secondary battery, including a conductive substrate, a negative electrode active material layer containing a negative electrode active material capable of absorbing and desorbing lithium ions and a conductive member having a lower elastic modulus than that of the conductive substrate, wherein at least part of the negative electrode active material is connected to the conductive substrate via the conductive member. There is also provided a lithium-ion secondary battery with such a negative electrode.03-22-2012
20120070735METHOD FOR PRODUCING POROUS METAL BODY, POROUS ALUMINUM BODY, BATTERY ELECTRODE MATERIAL INCLUDING POROUS METAL BODY OR POROUS ALUMINUM BODY, AND ELECTRODE MATERIAL FOR ELECTRICAL DOUBLE LAYER CAPACITOR - A porous metal body containing continuous pores and having a low oxygen content is provided by decomposing a porous resin body that contains continuous pores and has a layer of a metal thereon by heating the porous resin body at a temperature equal to or less than the melting point of the metal while the porous resin body is immersed in a first molten salt and a negative potential is applied to the metal layer; and a method for producing the porous metal body is provided.03-22-2012
20120088153METHOD FOR PRODUCING ALUMINUM FOIL - An object of the present invention is to provide a method for producing a high-ductility, high-purity aluminum foil at a high film formation rate by electrolysis using a plating solution having a low chlorine concentration. A method for producing an aluminum foil of the present invention as a means for achieving the object is characterized in that an aluminum film is formed on a surface of a substrate by electrolysis using a plating solution at least containing (1) a dialkyl sulfone, (2) an aluminum halide, and (3) at least one nitrogen-containing compound selected from the group consisting of an ammonium halide, a hydrogen halide salt of a primary amine, a hydrogen halide salt of a secondary amine, a hydrogen halide salt of a tertiary amine, and a quaternary ammonium salt represented by a general formula: R04-12-2012
20120088152ELECTRODE PLATE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode plate for a non-aqueous electrolyte secondary battery includes a current collector, and an electrode active material layer formed on at least part of the surface of the current collector. The electrode active material layer contains a particulate electrode active material, a binding material, and carbonic matter distinct from conductive materials. The binding material is a crystalline metal oxide that does not cause alkaline metal ion intercalation and deintercalation reactions.04-12-2012
20120088151POSITIVE-ELECTRODE ACTIVE MATERIAL AND POWER STORAGE DEVICE - A positive-electrode active material with improved electrical conductivity, and a power storage device using the material are provided. A positive-electrode active material with large capacity, and a power storage device using the material are provided. A core including lithium metal oxide is used as a core of a main material of the positive-electrode active material, and one to ten pieces of graphene is used as a covering layer for the core. A hole is provided for graphene, whereby transmission of a lithium ion is facilitated, resulting in improvement of use efficiency of current.04-12-2012
20120088150Electrode for lithium secondary battery and lithium secondary battery including the same - An electrode for a lithium secondary battery and a lithium secondary battery including the same, the electrode including a polyamide imide (PAI)-based binder, wherein a 1,3-benzenediamine peak is not observed when a composition including components extracted from the electrode by a solvent capable of dissolving the polyamideimide (PAI)-based binder is analyzed with pyrolysis-gas chromatography (Py-GC) under conditions of a pyrolysis temperature of about 750 to about 780° C., a pyrolysis time of about 5 seconds to about 15 seconds, and increasing a gas chromatography oven temperature from about 40° C. to about 300° C. at a rate of about 10° C./min.04-12-2012
20120094177POSITIVE ELECTRODE FOR LITHIUM ION BATTERTY, FABRICATION METHOD THEREOF, AND LITHIUM ION BATTERY USING THE SAME - An object of the present invention is to provide: a positive electrode including a lithium-containing nickel oxide which serves as a positive electrode active material and having excellent input/output characteristics, durability, and reliability; and a lithium ion battery which uses this positive electrode. The positive electrode includes a positive electrode current collector, and a positive electrode active material layer formed on the surface of the positive electrode current collector. The positive electrode active material layer includes: a lithium-containing nickel oxide represented by the general formula (1): Li04-19-2012
20130209878NONAQUEOUS SECONDARY CELL AND METHOD OF MANUFACTURING THE SAME - A thin nonaqueous secondary cell has high stability where a positive charge collector and a negative charge collector also serve as outer covering members. A sealing layer concurrently achieves high adhesiveness with both electrode charge collectors, high reliability preventing of short circuits, and satisfactory gas barrier properties. The nonaqueous secondary cell includes a positive charge collector containing aluminum as a primary component, a positive electrode layer formed on the positive charge collector, a negative charge collector containing copper as a primary component, a negative electrode layer formed on the negative charge collector so the negative electrode layer opposes the positive electrode layer, and a separator including an electrolyte between positive and negative electrode layers. Inner surfaces of a peripheries of positive and negative charge collectors are connected while a sealing material including a multilayered structure is interposed between the inner surfaces of the peripheries of the two charge collectors.08-15-2013
20130209879SECONDARY BATTERY - A secondary battery 08-15-2013
20130209880Positive Electrode for Lithium-Sulfur Secondary Battery and Method of Forming the Same - Provided are a positive electrode for a lithium-sulfur secondary battery and a method of forming the same, the positive electrode being capable of maintaining battery characteristics such as a specific capacity and a cycling characteristic while achieving a high rate characteristic in particular when being applied to a lithium-sulfur secondary battery. A positive electrode of a lithium-sulfur secondary battery includes a positive electrode current collector and carbon nanotubes grown on a surface of the positive electrode current collector and oriented in a direction orthogonal to the surface. At least the surface of each of the carbon nanotubes is covered with sulfur with a certain interstice left between neighboring ones of the carbon nanotubes.08-15-2013
20130209874CLAD MATERIAL - The clad material comprises outer layers each consisting of Ni or Ni alloy and a base layer consisting of Cu or Cu alloy, and is characterized in that peeling-off at a clad boundary is not recognized in cross section observation made after the clad material has been subjected to a 90° reverse bend test ten times, and the number of reverse bend cycles before rupture is 17 cycles or more. The clad material has with both of excellent corrosion resistance against electrolytic solution and high electric conductivity.08-15-2013
20130209875ELECTRODE BINDER COMPOSITION, ELECTRODE SLURRY, ELECTRODE, AND ELECTRICAL STORAGE DEVICE - An electrode binder composition is used to produce an electrode used for an electrical storage device, and includes (A) a polymer, (B) a compound represented by the following general formula (1), and (C) a liquid medium, the polymer (A) being fluorine-containing polymer particles or diene polymer particles, and a concentration of the compound (B) in the electrode binder composition being 5 to 500 ppm.08-15-2013
20130209877FLEXIBLE BATTERY ELECTRODES AND THE PRODUCTION THEREOF - A paste for producing electrodes for lithium ion batteries includes as electrochemically active material particles of at least one of a metal/semimetal selected from the group consisting of silicon, aluminium, antimony, tin, cobalt and carbon-based particles which intercalate lithium, a binder based on a polysaccharide, water as a solvent, and an aliphatic polyester having a molar mass of 150 to 500 g/mol or an hydroxycarboxylic ester having a molar mass of 150 to 500 g/mol as a plasticizer.08-15-2013

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