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The alkali metal is lithium

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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

429218100 - Chemically specified inorganic electrochemically active material containing

429231900 - Alkali metal component is active material

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DocumentTitleDate
20090202914Secondary battery material - Disclosed herein is a composite material for use as an anode for Li-ion batteries and its preparation method and use. The composite material comprises the components represented by the following formula:08-13-2009
20090155694CATHODE AND LITHIUM BATTERY USING THE SAME - A cathode including a current collector and a cathode active composition coated on the current collector. The cathode active composition includes a conducting agent, a binder, and a cathode active material. The cathode active material includes a solid-solution composite oxide represented by the Formula xLi2MO3-(1−x)LiMeO2, in which 006-18-2009
20100151331Positive active material and rechargeable lithium battery comprising same - The present invention relates to a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive active material includes an active compound that can intercalate/deintercalate lithium ions, and a bismuth (Bi)-based compound on the surface of the active compound. The bismuth (Bi)-based compound in the positive active material of the present invention decreases resistance against acid generated around a positive active material, and plays a role of suppressing structural change of the positive active material and its reaction with an electrolyte solution and preventing dissolution of transition elements therein. Accordingly, the positive active material of the present invention can improve storage and cycle life characteristics at a high temperature. In addition, it can increase charge and discharge, cycle life, and rate characteristics of a rechargeable lithium battery as well as improve mobility of lithium ions in the electrolyte solution.06-17-2010
20100159334LITHIUM SECONDARY BATTERY - An incombustible lithium secondary battery, which has excellent battery capacity and high safety, contains a separator provided between a positive electrode and a negative electrode, and a nonaqueous electrolytic solution containing a lithium salt, in which the nonaqueous electrolytic solution employs an ionic liquid as a solvent, and the separator contains an electrically insulating porous inorganic membrane and a substrate. The ionic liquid may contain a bis(fluorosulfonyl)imide anion as an anionic component, and may contain a cation containing a nitrogen atom as a cationic component.06-24-2010
20090191463NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY - A negative electrode 07-30-2009
20080213669Power Storage Device - An object of the present invention is to provide a power storage device with excellent cycle property, employing a cathode containing a nitroxyl polymer. To attain the object in the present invention, in the power storage device employing a cathode comprising a nitroxyl polymer, a lithium or lithium alloy anode is used as an anode active material and the cathode is in direct contact with the anode.09-04-2008
20100119948NEGATIVE ELECTRODE FOR LITHIUM SECONDARY CELL, LITHIUM SECONDARY CELL USING THE SAME, AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY CELL - A negative electrode for a lithium secondary battery according to the present invention includes a current collector 05-13-2010
20100119947METHOD FOR FORMING CATHODE ACTIVE MATERIAL POWDER FOR LITHIUM SECONDARY CELL, AND CATHODE ACTIVE MATERIAL POWDER FOR LITHIUM SECONDARY CELL PREPARED USING THE METHOD - Provided are a method for forming a cathode active material powder for a lithium secondary cell, and a cathode active material powder prepared using the method. According to the method, a coating layer consisting of a combination of a water-soluble polymer and a metal oxide may be formed on the particle surface of the cathode active material, thereby forming a uniform thickness of the coating layer. Thus, the elution of manganese may be prevented, thereby improving the capacity of the cathode active material and providing excellent cycle characteristics.05-13-2010
20100119946COMPOSITE ANODE ACTIVE MATERIAL FOR LITHIUM RECHARGEABLE BATTERY, METHOD OF PREPARING THE SAME AND LITHIUM RECHARGEABLE BATTERY USING THE MATERIAL - A composite anode active material includes a first intermetallic compound, a second intermetallic compound, a metal that is incapable of alloy formation with lithium, and carbon. In the composite anode active material, an amorphous carbon is present between the first intermetallic compound and the second intermetallic compound, and the metal that is incapable of alloy formation with lithium is uniformly distributed throughout in the composite anode active material. The composite anode active material may be used as an anode of a lithium rechargeable battery.05-13-2010
20100075230NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery includes a positive electrode containing lithium-iron phosphate, and a negative electrode containing a lithium-titanium composite oxide and a lithium composite oxide which is different from the lithium-titanium composite oxide. The lithium composite oxide has a potential of 2.5 to 3V vs. Li/Li03-25-2010
20130040204Functional Nanocomposite Materials, Electrodes, and Energy Storage Systems - Particular functional nanocomposite materials can be employed as electrodes and/or as electrodes in energy storage systems to improve performance. In one example, the nanocomposite material is characterized by nanoparticles having a high-capacity active material, a core particle having a comminution material, and a thin electronically conductive coating having an electronically conductive material. The nanoparticles are fixed between the core particle and the conductive coating. The comminution material has a Mohs hardness that is greater than that of the active material. The core particle has a diameter less than 5000 nm and the nanoparticles have diameters less than 500 nm.02-14-2013
20100151329NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING NEGATIVE ELECTRODE THEREOF - A method of manufacturing a negative electrode includes: a first step of forming a plurality of columnar active material blocks capable of electrochemically storing and releasing lithium ions on the surface of a current collector; and a second step of disposing particulate lithium in the gaps between the active material blocks.06-17-2010
20100112451NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode 05-06-2010
20090123844Lithium Primary Battery and Manufacturing Method Therefor - A lithium primary battery including a positive electrode, a negative electrode, an organic electrolyte, and a separator interposed between the positive electrode and the negative electrode: the negative electrode including a negative electrode active material; the negative electrode active material being at least one selected from the group consisting of lithium metal and a lithium alloy; at least a surface layer portion of the negative electrode including a composite of amorphous carbon material and the negative electrode active material; and the surface layer portion facing the positive electrode with the separator interposed therebetween.05-14-2009
20090317721NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has at least negative electrode, a positive electrode, and a separator between the positive electrode and negative electrode. Negative electrode has columnar first negative electrode active materials that are discretely formed on the outer peripheral surface of negative electrode current collector in the winding direction and can reversibly insert and extract lithium ions, and columnar second negative electrode active materials discretely formed on the inner peripheral surface. The positive electrode has positive electrode mixture layers containing a positive electrode active material capable of reversibly inserting and extracting lithium ions, on both surfaces of a positive electrode current collector. The difference between the porosity generated between first negative electrode active materials in negative electrode and that generated between the second negative electrode active materials in winding is set within 1.1%.12-24-2009
20090305140ELECTROCHEMICAL CELL - The present invention relates to a positive active material for an electrochemical cell including a compound having a nano-shape and represented by the following Formula 1.12-10-2009
20130071753COMPOSITE CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM BATTERY INCLUDING THE MATERIAL - A composite cathode active material including an overlithiated metal oxide having a layered structure, a material having an olivine structure, and one or more of: an inorganic material, and nitrogen atoms doped in the material having an olivine structure. The inorganic material includes a nitride or carbide of a non-transition metal. The composite cathode active material may be included in a cathode, and the cathode may be included in a lithium battery.03-21-2013
20110059366NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Embodiments of the present invention are directed to negative active materials for rechargeable lithium batteries including lithium titanium oxides. The lithium titanium oxide has a full width at half maximum (FWHM) of 2θ of about 0.08054° to about 0.10067° at a (111) plane (main peak, 2θ=18.330°) as measured by XRD using a Cu Kα ray.03-10-2011
20080274408Anode for Lithium Ion Cell - An anode for a lithium ion cell comprising stabilised lithium metal powder, polyethylene oxide and a lithium intercalation material. The use of polyethylene oxide as the binder for an anode used in a secondary cell enables lithium powder to be incorporated in the anode leading to an improvement in cell performance.11-06-2008
20090269670Solid 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.10-29-2009
20090061321STABILIZED LITHIUM METAL POWDER FOR LI-ION APPLICATION, COMPOSITION AND PROCESS - The present invention provides a lithium metal powder protected by a substantially continuous layer of a polymer. Such a substantially continuous polymer layer provides improved protection such as compared to typical CO03-05-2009
20120225357POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - A positive active material for a rechargeable lithium battery includes a core including a lithiated intercalation compound, and a MgO that is present as an island shape on the core surface and having an average nano-size.; a method of manufacturing this positive active material, and a rechargeable lithium battery including this positive active material are provided.09-06-2012
20110020708POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, AND NONAQUEOUS ELECTROLYTE CELL - Disclosed herein is a positive electrode active material wherein at least one metallic element M01-27-2011
20130164627COATING AND LITHIATION OF INORGANIC OXIDANTS BY REACTION WITH LITHIATED REDUCTANTS - A method for producing conductive carbon coated particles of an at least partially lithiated electroactive core material comprises the step of premixing an oxidant electroactive material with a metallated reductant followed by chemically reacting the oxidant electroactive material with the metallated reductant, said reductant being a coating precursor, said metal being at least one alkaline and/or at least one alkaline earth metal, and said chemically reacting being performed under conditions allowing reduction and metallation of the electroactive material via insertion/intercalation of the alkaline metal cation(s) and/or the alkaline earth metal cation(s) and coating formation via a polymerisation reaction like polyanionic or radicalic polymerisation of the reductant.06-27-2013
20090029257ELECTRIC STORAGE DEVICE - A negative electrode 01-29-2009
20100086857ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING SAME - The present invention has an object of providing a lithium secondary battery and an electrode for a lithium secondary battery having a superb cycle characteristic.04-08-2010
20080268343ELECTROCHEMICAL ELEMENT AND ELECTRODE THEREOF, METHOD AND APPARATUS FOR MANUFACTURING THE ELECTRODE, METHOD AND APPARATUS FOR LITHIATION TREATMENT - A method for manufacturing an electrode of an electrochemical element includes providing lithium and an element that has a larger atomic weight than that of lithium and is other than a constituting material of the electrode to an electrode by using a lithium vapor and a vapor of the element.10-30-2008
20080286656NEGATIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING THEREOF, AND LITHIUM SECONDARY BATTERY INCLUDING SAME - A negative active material for a lithium secondary battery according to an embodiment of the present invention includes a core material including an inorganic particulate that is capable of forming a compound by a reversible reaction with lithium, and a surface-treatment layer disposed on the surface of the core material. The surface-treatment layer includes a metal having electronic conductivity of 1011-20-2008
20110300449Electrode for secondary power source and method of manufacturing electrode for secondary power source - Provided are a method of manufacturing an electrode for a secondary power source, and a secondary power source. The method includes forming an electrode active material on a conductive sheet, forming a Li thin film layer by depositing lithium (Li) on the electrode active material, doping the electrode active material with the deposited Li, and controlling a doping level by monitoring the doping amount of Li. Accordingly, a cathode is doped with Li ions before a cell is assembled, thereby simplifying the manufacturing process, enhancing the doping rate of Li ions, and making the doping amount even.12-08-2011
20100028778METHOD FOR THE CUTTING OF MECHANICALLY SENSITIVE SHEET STOCK - Sheet stock that is useful as a separator in batteries can be obtained by a method in which (a) the sheet stock is provided, (b) the sheet stock is cut to the required width, and, subsequently, (c) the sheet stock obtained according to step (b) is wound onto a core or tube, and, subsequently, (d) the sheet stock is cut to length on the core or tube along the axis of the core or of the tube. The sheet stock has a carrier and abrasive particles, the abrasive particles being located inside and/or on at least part of the surface of the carrier.02-04-2010
20090233176NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the present invention is to provide a non-aqueous electrolyte secondary battery that is excellent in cycle characteristics even in a high-temperature environment and high in thermal stability. The non-aqueous electrolyte secondary battery of the present invention comprises at least one of an active material A and an active material C, and an active material B as positive electrode active materials. The active material A is Li09-17-2009
20100266902NEGATIVE ELECTRODE MATERIAL FOR RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE, NEGATIVE ELECTRODE FOR RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE, RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE, AND PROCESS FOR PRODUCING POLYCRYSTALLINE SILICON PARTICLES FOR ACTIVE MATERIAL FOR NEGATIVE ELECTRODE MATERIAL FOR RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE - This invention provides a negative electrode material for a rechargeable battery with a nonaqueous electrolyte, characterized in that the negative electrode material contains polycrystalline silicon particles as an active material, the particle diameter of crystallites of the polycrystalline silicon is not less than 20 nm and not more than 100 nm in terms of a crystallite size determined by the Scherrer method from the full width at half maximum of a diffraction line attributable to Si (111) around 2θ=28.4° in an x-ray diffraction pattern analysis, and the true specific gravity of the silicon particles is 2.300 to 2.320.10-21-2010
20080311478Lithium Secondary Battery - In order to provide a lithium secondary battery having high terminal-to-terminal open circuit voltage at the end of charge, suppressed amount of evolved gas on continuous charge, and superior cycle characteristics, the electrolyte solution thereof comprises either both vinylethylene carbonate compound and vinylene carbonate compound, lactone compound having a substituent at its a position in an amount of 0.01 weight % or more and 5 weight % or less, lactones having an unsaturated carbon-carbon bond in an amount of 0.01 weight % or more and 5 weight % or less, or sulfonate compound represented by the formula below.12-18-2008
20100285364Li-ION BATTERY WITH VARIABLE VOLUME RESERVOIR - An electrochemical cell in one embodiment includes a first electrode, a second electrode spaced apart from the first electrode, a separator positioned between the first electrode and the second electrode, an active material within the second electrode, and a variable volume reservoir in fluid connection with the active material, such that changes in the volume of the active material cause changes in volume of the variable volume reservoir.11-11-2010
20100081059OVERCHARGE AND OVERDISCHARGE PROTECTION IN LITHIUM-ION BATTERIES - A lithium-ion battery comprising a first electrode made of cathodic material, a second electrode made of anodic material and an electrolyte, said lithium-ion battery containing an overcharge protection material consisting of redox molecules, characterized by the fact that said redox molecules have a reduction potential which is lower than said anodic material.04-01-2010
20090263722NEGATIVE ELECTRODE FOR LITHIUM PRIMARY BATTERY AND LITHIUM PRIMARY BATTERY - A lithium primary battery includes a positive electrode, a negative electrode, a separator, a positive electrode case, a negative electrode case, a gasket, and a non-aqueous electrolyte. The negative electrode includes: lithium or a lithium alloy; a lithium carboxylate layer formed on a surface of the lithium or lithium alloy; and a carbon layer formed on a surface of the lithium carboxylate layer. This configuration allows the lithium primary battery to have suppressed negative electrode polarization during discharge and improved large-current discharge characteristics in a low temperature environment and after high temperature storage.10-22-2009
20090263721LITHIUM SECONDARY BATTERY AND PRODUCTION METHOD OF THE SAME - To provide a lithium secondary battery which suppresses a decrease in the charge and discharge efficiency during a battery storage test and which is excellent in maintaining the battery capacity after the storage test. There are disclosed a nonaqueous lithium battery, comprising: a positive electrode active material comprising a lithium-containing oxide capable of inserting and detaching lithium ions; a negative electrode active material comprising a carbon material capable of inserting and detaching lithium ions; and an electrolytic solution containing a lithium ion, wherein the surface of the negative electrode active material after initializing charging is coated with a compound derived from vinylene carbonate, and wherein a weight power density of the lithium battery is no less than 100 Wh/kg, and a method of producing a nonaqueous lithium battery comprising a step of sealing a positive electrode active material, a negative electrode active material, and a nonaqueous electrolytic solution using a sealed container, wherein a predetermined amount of vinylene carbonate is added into the nonaqueous electrolytic solution, and the initializing charging is carried out to form a coating on the surface of the negative electrode active material, the coating being derived from the vinylene carbonate.10-22-2009
20090104536NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND LITHIUM ION SECONDARY BATTERY USING THE SAME - A negative electrode for a lithium ion secondary battery including a current collector and an active material layer carried on the current collector, wherein the active material layer includes an active material represented by the general formula: Li04-23-2009
20110171533MESOPOROUS OXIDE OF TITANIUM - This invention pertains to mesoporous oxide of titanium and processes of making mesoporous oxide of titanium particularly crystalline oxide of titanium.07-14-2011
20100136433METHOD OF PREPARING SPHERICAL SHAPE POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - The present invention relates to a process of preparing a spherically-shaped positive active material for a lithium secondary battery, comprising: (a) uniformly dissolving a raw material mixture comprising a lithium-based compound, a transition metal, phosphate-based compound and a carbon source in deionized water; (b) preparing a high density spherically-shaped precursor by rapidly freezing the mixed solution in a freeze granulator and sublimating the frozen mixed solution; and (c) thermally treating the high density spherically-shaped precursor.06-03-2010
20100112453ELECTRODES FOR AN ELECTRIC FACILITY, SUCH AS A LITHIUM-ION CELL, OPERATING ACCORDING TO GALVANIC PRINCIPLES, AND METHODS OF MAKING THE SAME - A method of making an electrode for a device operating according to galvanic principles, in particular a lithium-ion cell, comprises the steps of: (i) making a sheet-like electrode (05-06-2010
20100112452BATTERY CURRENT COLLECTOR, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS SECONDARY BATTERY - The invention relates to a battery current collector including a metal foil for carrying at least a positive electrode active material or a negative electrode active material. At least one side of the metal foil has a compressed base plane and non-compressed protrusions arranged at a predetermined interval, and the non-compressed protrusions are formed at the same time as formation of the base plane. The surface roughness of the base plane is different from the surface roughness of the protrusions, and the surface roughness of the base plane is preferably an arithmetic mean roughness of 0.8 μm or less.05-06-2010
20080286655Non-Aqueous Electrolyte Battery - A non-aqueous battery with improved volume energy density and enhanced load characteristics is made available even when using olivine-type lithium phosphate as a positive electrode active material.11-20-2008
20090081551NON-AQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK - A non-aqueous electrolyte battery comprises a negative electrode comprising a current collector, and a negative electrode layer formed on one or both surfaces of the current collector, a positive electrode, and a separator interposed between the negative electrode and the positive electrode. The negative electrode layer comprises a plurality of layers laminated each other and containing a different active material each other, the layers comprising a first layer which is contacted with the current collector and contains spinel-type lithium titanate as an active material, and a second layer which is disposed to face the separator and contains Ramsdellite-type lithium titanate or anatase-type titanium oxide as an active material.03-26-2009
20090136850CATHODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, CATHODE CONTAINING THE CATHODE ACTIVE MATERIAL , AND LITHIUM BATTERY CONTAINING THE CATHODE ACTIVE MATERIAL - A cathode active material includes a lithium metal phosphate represented by Formula 1; and one or more compounds selected from the group consisting of a metal oxynitride, a metal nitride, and a mixture thereof:05-28-2009
20090029258PREPARING METHOD OF TIN SULFIDE NANOPARTICLES AND MANUFACTURING METHOD OF LITHIUM ION BATTERY USING THE SAME - There is provided a method of preparing tin sulfide nanoparticles, in which tin sulfide particles are prepared selectively, easily controlled in size and morphology and can be massively produced more easily through a simpler process. The method includes: mixing a tin sulfide precursor with at least one surfactant into a mixture; and heating the mixture.01-29-2009
20080318130ELECTRODE AND LITHIUM-ION SECONDARY BATTERY - An electrode is provided as one that can suppress generation of hydrogen and that has sufficiently low impedance. The electrode has an aluminum current collector, an aluminum hydroxide layer provided on the aluminum current collector, and an active material layer containing lithium-containing metal oxide and provided on the aluminum hydroxide layer. The thickness of the aluminum hydroxide layer is not more than 50 nm.12-25-2008
20130216915ELECTRODE STRUCTURE AND METHOD FOR MAKING THE SAME - Electrode structures, and more specifically, electrode structures for use in electrochemical cells, are provided. The electrode structures described herein may include one or more protective layers. In one set of embodiments, a protective layer may be formed by exposing a lithium metal surface to a plasma comprising ions of a gas to form a ceramic layer on top of the lithium metal. The ceramic layer may be highly conductive to lithium ions and may protect the underlying lithium metal surface from reaction with components in the electrolyte. In some cases, the ions may be nitrogen ions and a lithium nitride layer may be formed on the lithium metal surface. In other embodiments, the protective layer may be formed by converting lithium to lithium nitride at high pressures. Other methods for forming protective layers are also provided.08-22-2013
20090246635Polymer for Lithium Ion Secondary Battery and Lithium Ion Secondary Battery Using Same - A polymer for bonding the positive electrode and negative electrode of a lithium secondary battery, which includes a positive electrode, a negative electrode and an electrolyte solution, with a separator arranged between the positive electrode and the negative electrode. The polymer contains a cationically polymerizable monomer unit (A), a monomer unit (B) providing affinity to the electrolyte solution, a monomer unit (C) providing poor solubility to the electrolyte solution, and a monomer unit (D) containing an anionic or nonionic hydrophilic group. This polymer can be obtained through radical polymerization such as emulsion polymerization or suspension polymerization, and is characterized by having a dissolution rate into a mixed solvent of ethylene carbonate (EC) and diethyl carbonate (DEC)[EC:DEC=5:5 (weight ratio)] of not more than 10% by weight.10-01-2009
20090098463Anode of lithium battery, method for fabricating the same, and lithium battery using the same - An anode of a lithium battery includes a free-standing carbon nanotube film, the carbon nanotube film comprising a plurality of carbon nanotubes, the carbon nanotubes are substantially parallel to a surface of the carbon nanotube film. A method for fabricating an anode of a lithium battery, the method includes the steps of (a) providing an array of carbon nanotubes; and (b) providing a pressing device to press the array of carbon nanotubes to form a carbon nanotube film, and thereby, achieving the anode of lithium battery.04-16-2009
20090053607Electrode for rechargeable lithium battery and rechargeable lithium battery including same - The electrode for a rechargeable lithium battery includes a current collector and an active material layer disposed on the current collector. The active material layer has pores inside the active material layer. Porosity of the active material layer is higher than 50% and equal to or less than 70%. The pores formed inside the active material layer buffer against volume change that occurs during charges and discharges, and thereby improve cycle-life characteristic of a rechargeable lithium battery.02-26-2009
20100003603BATTERY STRUCTURES, SELF-ORGANIZING STRUCTURES AND RELATED METHODS - An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionically conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.01-07-2010
20110143209POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM BATTERY AND LITHIUM BATTERY USING THE SAME - A positive electrode active material for lithium batteries includes secondary particles having primary particles and an amorphous material. A method of manufacturing the positive electrode active material includes mixing a lithium composite oxide and a lithium salt, and heat treating the mixture. A positive electrode includes the positive electrode active material, and a lithium battery includes the positive electrode.06-16-2011
20090136851NEGATIVE ELECTRODE AND NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Negative active materials, negative electrodes, and rechargeable lithium batteries are provided. A negative electrode according to one embodiment includes a non-carbon-based active material, a lithium salt having an oxalatoborate structure, and a high-strength polymer binder. The negative active material may include a non-carbon-based material and a coating layer on the non-carbon-based material. The coating layer includes a lithium salt having an oxalatoborate structure and a high-strength polymer binder. A rechargeable lithium battery including the negative electrode or negative active material has good cycle life characteristics and high capacity.05-28-2009
20090202912ALL SOLID STATE SECONDARY BATTERY - This is to provide an all solid state secondary battery which can be produced by an industrially employable method capable of mass-production and has excellent secondary battery characteristics.08-13-2009
20110229767Electrode for non-aqueous electrolyte secondary battery, method for producing the same, and non-aqueous electrolyte secondary battery - An electrode for a non-aqueous electrolyte secondary battery with which the non-aqueous electrolyte secondary battery can perform high output charge and discharge is provided. The electrode for a non-aqueous electrolyte secondary battery comprises a current collector and an electrode active material layer containing active materials. The electrode active material layer is formed on at least a part of a surface of the current collector. The electrode active material layer has a pore forming layer and a dense layer situated on a current collector side of the pore forming layer. The dense layer has a structure in which the active material exists continuously with the active material particles binding to each other, and has substantially no pores. The pore forming layer has a structure in which the active material exists continuously with the active material particles partly binding to each other, and has pores through which an electrolyte can pass.09-22-2011
20090239151NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL, AND MAKING METHOD - A negative electrode material comprising an active material and 1-20 wt % of a polyimide resin binder is suitable for use in non-aqueous electrolyte secondary batteries. The active material comprises silicon oxide particles and 1-50 wt % of silicon particles. The negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide. The non-aqueous electrolyte secondary battery has a high initial efficiency and maintains improved performance and efficiency over repeated charge/discharge cycles by virtue of mitigated volumetric changes during charge/discharge cycles.09-24-2009
20090117470METHOD FOR PREPARING A LITHIUM ION CELL - The apparatus and methods described herein generally relate to a method for preparing electrodes for lithium ion cells, where both the positive and negative electrodes of the cell include metal oxides processed according to the methods described herein.05-07-2009
20100167128 Tin/Lithium Oxide Composite Thin Film, Its Preparation and Uses Thereof - A method for electrochemically producing a tin/lithium oxide composite thin film includes forming the tin/lithium oxide composite thin film on a conductive substrate in a solution under suitable conditions. The solution includes about 1007-01-2010
20100190059HIGH-CAPACITY NANOSTRUCTURED GERMANIUM-CONTAINING MATERIALS AND LITHIUM ALLOYS THEREOF - Electrodes comprising an alkali metal, for example, lithium, alloyed with nanostructured materials of formula Si07-29-2010
20090297953Negative Electrode Material for Non-Aqueous Electrolyte Secondary Battery, Process for Producing the Same, Negative Electrode, and Non-Aqueous Electrolyte Secondary Battery - A negative electrode material for non-aqueous electrolyte secondary batteries, which is best suited for large current I/O non-aqueous electrolyte secondary batteries represented by those for hybrid electric vehicles (HEVs), which are unlikely to be influenced by the deterioration of battery characteristics due to water, and a production process thereof are provided.12-03-2009
20100190060ELECTRODE FOR ELECTROCHEMICAL ELEMENT, ITS MANUFACTURING METHOD, AND ELECTROCHEMICAL ELEMENT USING THE SAME - Having a current collector having a concave portion and a convex portion at least on one side, and a columnar body formed on the convex portion of the current collector, the columnar body contains an active material for inserting and extracting lithium ions bonding at least with oxygen, and the oxygen content ratio of the active material of the columnar body becomes smaller as going away from the interface of the current collector.07-29-2010
20100151332POSITIVE ELECTRODE MATERIALS FOR HIGH DISCHARGE CAPACITY LITHIUM ION BATTERIES - Positive electrode active materials are described that have a high tap density and high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li06-17-2010
20100151330NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode for a non-aqueous electrolyte secondary battery, which reversibly inserts/extracts lithium ions includes a current collector (06-17-2010
20110059367POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, NONAQUEOUS ELECTROLYTE CELL, AND METHOD OF PREPARING POSITIVE ELECTRODE ACTIVE MATERIAL - Disclosed herein is a positive electrode active material prepared by mixing a lithium-containing compound, a compound containing a transition metal to be put into a solid solution, and a compound containing a metallic element M2 different from the transition metal, and firing the mixture to form composite oxide particles, depositing a compound containing at least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) on surfaces of the particles, and firing the particles, whereby each of the particles is provided with a concentration gradient such that the concentration of the metallic element M2 increases from the center toward the surface of the particle, and at least one element selected from among (S), (P) and (F) is made present in the form of being aggregated at the surfaces of the composite oxide particles.03-10-2011
20110059365PROCESS FOR MANUFACTURE AND ASSEMBLY OF BATTERY MODULES AND SECTIONS - The present invention provides an improved rechargeable battery and method of assembling the same, including the steps of providing at least one pair of electrically biased sheets to form a plurality of positive and negative electrodes; forming a cell element from three positive electrodes spaced from three negative electrodes in an overlying orientation with a positive and negative lead terminal extending respectively therefrom; separating each of the positive and negative electrodes with a polymer layer; electrically aligning said positive lead terminals and negative lead terminals; applying a heat protectant to the positive and negative lead terminals; shaping the positive and negative lead terminals for connecting to a pair of electrode current collectors, wherein one of the collectors is associated with the positive lead terminal and the other with the negative lead terminal; and providing a frame for receiving cell elements, such that the rechargeable battery provides the desired electrical characteristics.03-10-2011
20100227222Lithium-Metal Composite Oxides and Electrochemical Device Using the Same - Disclosed is a lithium-containing metal composite oxide comprising paramagnetic and diamagnetic metals, which satisfies any one of the following conditions: (a) the ratio of intensity between a main peak of 0±10 ppm (Io PPm) and a main peak of 240±140 ppm (I240 pPm), Uoppm/124o PPm), is less than 0.117·Z wherein Z is the ratio of moles of the diamagnetic metal to moles of lithium; (b) the ratio of line width between the main peak of 0±10 ppm (Io PPm) and the main peak of 240+140 ppm (I24o PPm), (W24o PPm/WO ppm), is less than 21.45; and (c) both the conditions (a) and (b), the peaks being obtained according to the 7Li—NMR measurement conditions and means disclosed herein. Also, an electrode comprising the lithium-containing metal composite oxide, and an electrochemical device comprising the electrode are disclosed. The lithium-containing multicomponent metal composite oxide shows crystal stability and excellent physical properties as a result of an improved ordering structure of metals, in which the components of the composite oxide are uniformly distributed. Thus, it can provide a battery having high capacity characteristics, long cycle life characteristics and improved rate characteristics.09-09-2010
20100227221Preparation Method of Lithium-Metal Composite Oxides - Disclosed is a method for preparing a lithium-metal composite oxide, the method comprising the steps of: (a) mixing an aqueous solution of one or more transition metal-containing precursor compounds with an alkalifying agent and a lithium precursor compound to precipitate hydroxides of the transition metals; (b) mixing the mixture of step (a) with water under supercritical or subcritical conditions to synthesize a lithium-metal composite oxide, and drying the lithium-metal composite oxide; and (c) subjecting the dried lithium-metal composite oxide either to calcination or to granulation and then calcination. Also disclosed are an electrode comprising the lithium-metal composite oxide, and an electrochemical device comprising the electrode. In the disclosed invention, a lithium-metal composite oxide synthesized based on the prior supercritical hydrothermal synthesis method is subjected either to calcination or to granulation and then calcination. Thus, unlike the prior dry calcination method or wet precipitation method, a uniform solid solution can be formed and the ordering of metals in the composite oxide can be improved. Accordingly, the lithium-metal composite oxide can show crystal stability and excellent electrochemical properties.09-09-2010
20100239915ELECTRODES AND LITHIUM-ION CELLS WITH A NOVEL ELECTRODE BINDER - An electrode for a lithium ion battery includes a matrix based on at least one polysaccharide and also particles of at least one electrochemically active material which are embedded in the matrix, with the electrode being free of synthetic polymeric compounds. A battery contains the electrode and a polysaccharide is a binder for electrochemically active electrode materials for such an electrode.09-23-2010
20100255378VINYLIDENE FLUORIDE COPOLYMER FUNCTIONALIZED BY RADIATION GRAFTING OF AN UNSATURATED POLAR MONOMER - The invention relates to a copolymer of VDF and at least one monomer that is copolymerizable with VDF, having a VDF weight content of at least 50%, preferably at least 75%, onto which at least one unsaturated polar monomer is radiation grafted, characterized in that the VDF copolymer has, before grafting, the following characteristics: 10-07-2010
20100209778New Composition for Manufacture of Electrodes and Electrodes and Batteries Resulting Therefrom - Composition for the manufacture of composite electrodes usable in electrochemical devices and comprising at least: (i) one lithium insertion material; (ii) one electronic conducting material; (iii) one amino-functional cationic polyelectrolyte; (iv) water.08-19-2010
20090042102Nanowire Battery Methods and Arrangements - A variety of methods and apparatus are implemented in connection with a battery. According to one such arrangement, an apparatus is provided for use in a battery in which ions are moved. The apparatus comprises a substrate and a plurality of growth-rooted nanowires. The growth-rooted nanowires extend from the substrate to interact with the ions.02-12-2009
20100040951NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY - The negative electrode for a lithium secondary battery includes: a current collector 02-18-2010
20090246636HIGH ENERGY HIGH POWER ELECTRODES AND BATTERIES - Subassemblies for use in an electrochemical device are provided, as are processes for preparing the subassemblies and electrochemical cells incorporating the subassemblies. In some embodiments, the subassemblies include (a) a first electrode and (b) a separator or a first current collector or both. The first electrode is bonded to the separator or the first current collector or both. In some embodiments, the subassemblies further include a second electrode and a second current collector. In some embodiments, the electrodes or separators are sintered. Bipolar cells are also provided, including a plurality of stacked electrochemical cells that are joined in series. The positive electrode and the negative electrode of each stack include a sintered electrode.10-01-2009
20090202913NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY - A negative electrode 08-13-2009
20100297504METHOD OF PRODUCING NITRIDED LITHIUM-TRANSITION METAL COMPOUND OXIDE, NITRIDED LITHIUM-TRANSITION METAL COMPOUND OXIDE, AND LITHIUM-ION BATTERY - Provided is a method of producing a nitrided lithium-transition metal compound oxide having a rock-salt layer structure or a spinel structure, including: preparing a raw material composite that has a raw material containing lithium, transition metal, and oxygen and a nitriding agent that is expressed by a following General Formula (1) and is solid or liquid at room temperature (25° C.); and synthesizing the nitrided lithium-transition metal compound oxide by firing the raw material composite to nitride the raw material.11-25-2010
20100297503POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES AND LITHIUM SECONDARY BATTERY - A positive electrode for lithium secondary batteries and a lithium secondary battery are provided in which, by using an olivine Mn based positive-electrode active material and an optimal binder for the olivine Mn based positive-electrode active material, peel-off of the electrode and gelatinization of the slurry can be prevented, with large energy density, excellent in rate characteristic and cycle life. The positive electrode includes a positive-electrode composite including at least a positive-electrode active material and a binder; and a positive-electrode current collector. The positive-electrode active material includes a lithium composite oxide having an olivine-type structure, which is represented by the formula LiMn11-25-2010
20100297505METHOD OF PRODUCING NITRIDED LI-TI COMPOUND OXIDE, NITRIDED LI-TI COMPOUND OXIDE, AND LITHIUM-ION BATTERY - Provided is a method of producing a nitrided Li—Ti compound oxide, including: preparing a raw material composite that has a raw material containing lithium, titanium, and oxygen and a nitriding agent that is expressed by a following General Formula (1) and is solid or liquid at room temperature (25° C.); and synthesizing the nitrided Li—Ti compound oxide by firing the raw material composite to nitride the raw material.11-25-2010
20100310941Compositions Including Nano-Particles and a Nano-Structured Support Matrix and Methods of preparation as reversible high capacity anodes in energy storage systems - The present invention relates to compositions including nano-particles and a nano-structured support matrix, methods of their preparation and applications thereof. The compositions of the present invention are particularly suitable for use as anode material for lithium-ion rechargeable batteries. The nano-structured support matrix can include nanotubes, nanowires, nanorods, and mixtures thereof. The composition can further include a substrate on which the nano-structured support matrix is formed. The substrate can include a current collector material.12-09-2010
20110033754NONAQUEOUS LITHIUM SECONDARY BATTERY - A nonaqueous lithium secondary battery includes a positive electrode and a negative electrode capable of intercalating and releasing lithium ions and a separator. The negative electrode includes a collector and a negative electrode mixture layer formed on the collector. The negative electrode mixture layer includes at least a negative electrode active material and a binder. Nonconductive particles are buried in a top layer of the negative electrode mixture layer. The nonconductive particles and the negative electrode active material exist as a mixture in the top layer with a depth ranging from 1 to 20 μm. A volume ratio of nonconductive particles having a diameter equal to or less than 20 μm to a total volume of all the nonconductive particles and the negative electrode active material existing in the top layer of the negative electrode mixture layer ranges from 20 to 80%.02-10-2011
20110033753ELECTRODE FOR LITHIUM BATTERY AND ITS MANUFACTURING METHOD, AND LITHIUM BATTERY - A lithium battery electrode includes: a metal body having a wiring shape; and a layer of active material disposed on a surface of the metal body having a wiring shape.02-10-2011
20090311606NEGATIVE ELECTRODE MATERIAL, MAKING METHOD, LITHIUM ION SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - A conductive powder is provided in which particles having silicon crystallites dispersed in a silicon compound are coated on their surface with carbon. The conductive powder develops a diffraction peak assigned to Si(111) around 2θ=28.4° on x-ray diffractometry (Cu—Kα) using copper as the counter cathode, the peak having a half width of at least 1.0°, and has a specific resistance of up to 50 mΩ. The powder is used as a negative electrode material to construct a non-aqueous electrolyte secondary battery, which has a high charge/discharge capacity and improved cycle performance.12-17-2009
20090311605CATHODES AND RESERVOIRS FOR AQUEOUS LITHIUM/AIR BATTERY CELLS - Li/air battery cells are configurable to achieve very high energy density. The cells include a protected a lithium metal or alloy anode and an aqueous catholyte in a cathode compartment. In addition to the aqueous catholyte, components of the cathode compartment include an air cathode (e.g., oxygen electrode) and a variety of other possible elements.12-17-2009
20100015528LITHIUM-ION BATTERY - A battery includes a positive electrode having a current collector and a first active material and a negative electrode having a current collector and a second active material. The battery also includes an auxiliary electrode having a current collector and a third active material. The auxiliary electrode is configured for selective electrical connection to one of the positive electrode and the negative electrode. The first active material, second active material, and third active material are configured to allow doping and undoping of lithium ions. 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.01-21-2010
20100062340NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY - A negative electrode 03-11-2010
20100062339CATHODE MATERIALS FOR LITHIUM BATTERIES - Described are cathode materials for lithium batteries. Better cathode materials may be produced by mixing at least two compounds and a binder additive. The first compound includes one or more salts of lithium metal phosphorous while the second compound includes one or more lithium transition metal oxides. In other instances, a conductive additive may also be incorporated. The cathode materials so produced exhibit enhanced electrical properties and thermal stability.03-11-2010
20090214955ELECTRIC STORAGE DEVICE, ELECTRODE, METHOD FOR FABRICATING ELECTRODE, AND MANAGEMENT METHOD - A mixture layer for an electrode is formed on a punched current collector. For example, the mixture layer is made of an active material, conductive assistant, binder, and the like. The mixture layer having the structure described above is formed into a slurry, for example, and applied onto the current collector. The applied mixture layer is dried to fabricate an electrode. The thus formed electrode is used to assemble an electric storage device. Upon the assembly, lithium ions are pre-doped into a negative electrode. The pre-doping time is determined according to air permeability of the electrodes.08-27-2009
20100129718NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY COMPRISING THE SAME, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY - A current collector 05-27-2010
20110076566NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE, AND POWER STORAGE DEVICE - An object is to improve characteristics of a power storage device and achieve a long lifetime. In the case where a lithium nitride is used for a negative electrode active material of a power storage device, a plurality of lithium nitride layers with different lithium concentrations are stacked. For example, in the case where a first lithium nitride layer and a second lithium nitride layer are stacked over a current collector, lithium is contained in the first lithium nitride layer at a lower concentration than lithium contained in the second lithium nitride layer. In this case, a concentration of a transition metal of the first lithium nitride layer is higher than a concentration of the transition metal of the second lithium nitride layer. Note that another alkali metal may be used instead of lithium.03-31-2011
20100062341Rechargeable electro chemical battery cell - The invention relates to a rechargeable electrochemical battery cell having a negative electrode, an electrolyte, and a positive electrode. The negative electrode comprises an electronically conductive substrate (03-11-2010
20090317722NEGATIVE ELECTRODE MATERIAL, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - Silicon particles are irradiated with neutrons so that 12-24-2009
20100129717Microbattery on a substrate with monolithic packaging - The microbattery comprises a first current collector and a second current collector arranged on a substrate, and a stack comprising two electrodes separated by an electrolytic film. Each electrode is connected to a corresponding collector, one of the electrodes being a lithium-based anode. The stack is covered by a packaging comprising a metal layer. The first current collector is salient from the packaging and the second current collector is in contact with the metal layer. An alumina plug with a thickness of less than 30 nm is arranged between the first current collector and the metal layer, the electrode in contact with the first current collector being electrically insulated from the metal layer by the alumina plug.05-27-2010
20110256453POSITIVE-ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, SECONDARY BATTERY EMPLOYING THE SAME, AND PROCESS FOR PRODUCING POSITIVE-ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY - A subject for the invention is to provide a positive-electrode material, which has high capacity and high output and is inhibited from suffering a decrease in output with repetitions of charge and use.10-20-2011
20080318132COMPOSITIONS AND METHODS FOR PROTECTION OF ACTIVE METAL ANODES AND POLYMER ELECTROLYTES - Electrochemical structures with a protective interlayer for prevention of deleterious reactions between an active metal electrode and polymer electrolytes, and methods for their fabrication. The structures may be incorporated in battery cells. The interlayer is capable of protecting an active metal anode and a polymer electrolyte from deleterious reaction with one another while providing a high level of ionic conductivity to enhance performance of a battery cell in which the structure is incorporated. The interlayer has a high ionic conductivity, at least 1012-25-2008
20080213670NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - In a non-aqueous electrolyte secondary battery including an electrode assembly including a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a separator interposed therebetween; and a non-aqueous electrolyte, 80 wt % or more of the positive electrode active material is primary particles, and the separator is formed by a porous film, or the porous film is formed at at least one position from the following: between the positive electrode and the separator main body, between the negative electrode and the separator main body, and inside the separator main body, to capture the metal ions leached from the positive electrode active material. Such an arrangement enables a non-aqueous electrolyte secondary battery with significantly less decline in battery capacity, excellent charge and discharge cycle life performance, and capable of stable output for a longer period of time.09-04-2008
20080213668Nonaqueous Electrolyte Secondary Battery - A nonaqueous electrolyte secondary battery has a positive electrode including an active material of complex oxides capable of storing and emitting lithium ions, a negative electrode, a separator, and an electrolytic solution made of a nonaqueous solvent. A discharge curve of this battery when being discharged with a constant power has two or more points of step-like flections near the end of electrical discharge in a range of 5% to 20% of a discharge capacity thereof as determined from an initial discharge voltage in a state of full charge to a discharge-end voltage.09-04-2008
20080311477Process for Manufacturing a Lithiated Electrode, Lithiated Electrode That Can Be Obtained by This Process, and Its Uses - The invention relates to a process for manufacturing a lithiated electrode, which comprises: 12-18-2008
20110052997NEGATIVE ELECTRODE FOR LITHIUM BATTERY AND LITHIUM BATTERY INCLUDING THE SAME - A negative electrode for a lithium battery includes an active material layer and a current collector. The active material layer has a plurality of crystal grains and the plurality of crystal grains include a plurality of pores. A first pore of the plurality of pores has a first length and a second length, the first length being the maximum length orthogonal to the current collector and the second length being the maximum length orthogonal to the first length, and the first length is greater than the second length.03-03-2011
20100285365Li-ION BATTERY WITH POROUS ANODE - An electrochemical cell in one embodiment includes a first electrode, and a second electrode spaced apart from the first electrode, the second electrode including a substrate of active material formed with a plurality of interconnected chambers defined by a respective one of a plurality of inwardly curving walls, and a form of lithium.11-11-2010
20100285363Li-ION BATTERY WITH BLENDED ELECTRODE - An electrochemical cell with a blended cathode in one embodiment includes a negative electrode including a form of lithium, a positive electrode spaced apart from the negative electrode, a separator positioned between the negative electrode and the positive electrode, a first active material in the positive electrode including a form of lithium, and a second active material in the positive electrode including a form of sulfur.11-11-2010
20100285368LITHIUM ION BATTERY - A lithium ion battery includes: a positive electrode; a negative electrode that includes a negative electrode active material layer that contains an alloy-formable active material; an ion permeable insulating layer that is interposed between the positive electrode and the negative electrode; and an ion conductive polymer layer that is interposed between the negative electrode and the ion permeable insulating layer, in which the ion conductive polymer layer is configured to include a negative electrode-side portion and an ion permeable insulating layer-side portion that have different compositions, and the ion permeable insulating layer-side portion is configured to have higher ion conductivity than the negative electrode-side portion. With such a lithium ion battery, charge/discharge cycle characteristics and rate characteristics can be improved.11-11-2010
20100285367NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode active material for a non-aqueous electrolyte secondary battery includes an element capable of forming an intermetallic compound with lithium. The negative electrode active material has a water content of 0 to 0.04 molecule per atom of the element. The non-aqueous electrolyte secondary battery includes a negative electrode including the negative electrode active material, a positive electrode, a separator separating the negative electrode and the positive electrode, and a non-aqueous electrolyte.11-11-2010
20100285369ELECTRODE AND METHOD FOR MANUFACTURING THE SAME - An electrode 11-11-2010
20100285362Li-ION BATTERY WITH SELECTIVE MODERATING MATERIAL - An electrochemical cell in one embodiment includes a negative electrode including a form of lithium, a positive electrode spaced apart from the negative electrode, a separator positioned between the negative electrode and the positive electrode, and a moderator layer positioned between the negative electrode and the separator.11-11-2010
20100221613COATED POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY, NONAQUEOUS SECONDARY BATTERY, AND THEIR PRODUCTION METHODS - Disclosed is a nonaqueous secondary battery (09-02-2010
20100178565METHOD OF FABRICATING STRUCTURED PARTICLES COMPOSED OF SILICON OR A SILICON-BASED MATERIAL AND THEIR USE IN LITHIUM RECHARGEABLE BATTERIES - Pillared particles of silicon or silicon-comprising material and a method of fabricating the same are disclosed. These particles may be used to create both a composite anode structure with a polymer binder, a conductive additive and a metal foil current collector, and an electrode structure. The structure of the particles overcomes the problems of charge/discharge capacity loss.07-15-2010
20090197178MANUFACTURE OF LITHIUM ION SECONDARY BATTERY - A method for manufacturing a lithium ion secondary battery which can realize strong bonds between layers and a high ion conducting property within the layers by sintering as the layers constituted of a solid electrolyte layer, a positive electrode layer, and a negative electrode layer are sintered and bonded mutually is provided. And the lithium ion secondary battery manufactured by the aforementioned method is also provided.08-06-2009
20100190062NEGATIVE ELECTRODE AND SECONDARY BATTERY - A negative electrode includes a negative electrode collector and a negative electrode active material layer on the collector. The layer contains a negative electrode active material capable of occluding and releasing lithium. The material in a fully charged state satisfies a conditional expression (1) in 07-29-2010
20100190061SILICON ANODE FOR A RECHARGEABLE BATTERY - An electrode and electrode assembly, for example for use as an anode in a lithium-ion rechargeable cell that uses silicon or silicon-based elements of specific dimensions and geometry as its active material, is provided, as well as methods for manufacturing the same. The active silicon or silicon-based material may include fibres, sheets, flakes, tubes or ribbons, for example.07-29-2010
20120308896POSITIVE-ELECTRODE MATERIAL FOR SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME - The present invention has an object of providing a positive-electrode material for a non-aqueous electrolyte secondary battery having a 2− or higher dimensional lithium diffusion network structure of high lithium capacity, containing phosphoric acid of high thermal stability, and having lithium ions in which the ratio of the charge, compensation center and lithium ions exceeds 1:2. That is, a positive-electrode material for a secondary battery comprising a compound represented by the general formula A12-06-2012
20100021821Secondary Battery Having Electrode for Improvement of Stability During Overcharge - Disclosed herein is a secondary battery including an electrode assembly that can be charged and discharged, wherein the electrode assembly includes an electrode (‘safety electrode’) composed of a material that effects an electrochemical reaction when the secondary battery is overcharged (Overcharge reaction material’). The safety electrode according to the present invention is not directly added to components related to the operation of the secondary battery. Consequently, the safety electrode does not deteriorate the performance of the battery during the normal operation of the battery, and the safety electrode consumes the overcharge current through the electrochemical reaction, when the battery is overcharged, whereby the safety of the battery is fundamentally secured.01-28-2010
20100167129METHOD FOR MODIFYING CATHODE MATERIAL AND LITHIUM BATTERY EMPLOYING THE CATHODE MATERIAL - The invention provides a lithium battery, including: a cathode plate and an anode plate; a separator disposed between the cathode plate and the anode plate to define a reservoir region; and an electrolyte filled in the reservoir region. A thermal protective film is provided to cover a material of the cathode plate or the anode plate. When a battery temperature rises over an onset temperature of the thermal protective film, it undergoes a crosslinking reaction to inhibit thermal runaway. A method for fabricating the lithium ion battery is also provided.07-01-2010
20090117471LITHIUM ION BATTERY ELECTRODE AND METHOD FOR MANUFACTURE OF SAME - Disclosed is a method for synthesizing a lithium transition metal oxide nanostructure for the cathode material LiCoO05-07-2009
20090035663STABILIZED LITHIUM METAL POWDER FOR LI-ION APPLICATION, COMPOSITION AND PROCESS - The present invention provides a lithium metal powder protected by a wax. The resulting lithium metal powder has improved stability and improved storage life.02-05-2009
20110070500Electrode Material, Forming Method and Application Thereof - An electrode material includes a particle-shaped crystalline metal oxide and further includes a particle-shaped amorphous metal oxide that is porous with a pore volume greater than or equal to 0.5 cm03-24-2011
20100028779Porous Polyimide Membrane, Battery Separator, Battery, and Method - A porous polyimide membrane is provided. The volume of pores with a diameter of between about 50 and about 300 nm is more than about 40%, preferably more than 75% of the total pore volume in the membrane. A method for preparing a porous polyimide membrane comprises: preparing a porous polyamide acid membrane; stretching the porous polyamide acid membrane to form a stretched membrane; and imidizing the stretched membrane to form a porous polyimide membrane. The volume of the pores with a diameter of about 50-300 nm is more than about 40%, preferably more than 75% of the total pore volume in the porous polyimide membrane.02-04-2010
20090253042METHOD OF PREPARING POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY PREPARED BY SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING POSITIVE ACTIVE MATERIAL - The present invention relates to a method of preparing a positive active material for a rechargeable lithium battery, a positive active material prepared according to the method, and a rechargeable lithium battery including the same. This manufacturing method includes preparing a complex salt solution by mixing a solution including a metal source material and a chelating agent, disposing the complex salt on the surface of a lithium-included compound by adding a lithium-included compound to the complex salt solution, adding a solution including a fluorine source material to the solution including a lithium-included compound with the complex salt on the surface, and heat-treating the mixture. The present invention provides a simple method of economically preparing a positive active material in which structural transition on the surface is prevented and securing a uniform coating layer. In addition, the positive active material can have improved charge and discharge characteristics, cycle life characteristic, and rate characteristic. It also has improved ion conductivity, and accordingly can improve mobility of lithium ions in an electrolyte and thereby improve discharge potential of a battery. Furthermore, the positive active material can decrease the amount of a conductive material and increase density of a substrate.10-08-2009
20090053608Anode active material hybridizing carbon nanofiber for lithium secondary battery - The present invention provides a composite silicon anode material hybridizing carbon nanofiber for lithium secondary battery prepared by the steps comprising: i) preparing a support made by amorphous silicon alloy after processing amorphous silicon and metal; ii) dispersing the catalyst selected from Fe, Co, Ni, Cu, Mg, Mn, Ti, Sn, Si, Zr, Zn, Ge, Pb or In on the surface of said support made by amorphous silicon alloy; and iii) growing the carbon nanofiber using a carbon source selected from carbon monoxide, methane, acetylene or ethylene on said support by a chemical vapor deposition method, wherein the amount of grown carbon nanofiber is 1˜110 wt % of the amount of said support.02-26-2009
20120070746LOW ELECTROLYTE ELECTROCHEMICAL CELLS - Electrochemical cells including components and configurations for electrochemical cells, such as rechargeable lithium batteries, are provided. The electrochemical cells described herein may include a combination of components arranged in certain configurations that work together to increase performance of the electrochemical cell. In some embodiments, such combinations of components and configurations described herein may minimize defects, inefficiencies, or other drawbacks that might otherwise exist inherently in prior electrochemical cells, or that might exist inherently in prior electrochemical cells using the same or similar materials as those described herein, but arranged differently.03-22-2012
20110104571Nano-structured anode compositions for lithium metal and lithium metal-air secondary batteries - This invention provides a nano-structured anode composition for a lithium metal cell. The composition comprises: (a) an integrated structure of electrically conductive nanometer-scaled filaments that are interconnected to form a porous network of electron-conducting paths comprising interconnected pores, wherein the nano-filaments have a transverse dimension less than 500 nm; and (b) micron- or nanometer-scaled particles of lithium, a lithium alloy, or a lithium-containing compound wherein at least one of the particles is surface-passivated or stabilized and the weight fraction of these particles is between 1% and 99% based on the total weight of these particles and the integrated structure together. Also provided is a lithium metal cell or battery, or lithium-air cell or battery, comprising such an anode. The battery exhibits an exceptionally high specific capacity, an excellent reversible capacity, and a long cycle life.05-05-2011
20090130563STRUCTURED SILICON ANODE - A silicon/lithium battery can be fabricated from a substrate. This allows the battery to be produced as an integrated unit on a chip. The battery includes an anode formed from an array of submicron structures including silicon fabricated on a substrate and a cathode including lithium.05-21-2009
20100248035LITHIUM SECONDARY BATTERY - A negative electrode mixture layer containing CMC and a hydroxy group-modified PVP. The mass ratio of CMC is greater than that of the hydroxy group-modified PVP. The hydroxy group-modified PVP has low affinity with a solvent for a solvent-system slurry that forms an inorganic particle layer. Adhesion strength is prevented from degrading after forming the inorganic particle layer on the negative electrode mixture layer.09-30-2010
20120214071CONDUCTIVE LITHIUM STORAGE ELECTRODE - A compound comprising a composition A08-23-2012
20100047693BINDER FOR ELECTRODE MATERIAL CONTAINING SEMI-IPN OF POLYVINYL ALCOHOL AND POLYURETHANE AND LITHIUM SECONDARY BATTERY EMPLOYED WITH THE SAME - Provided is a binder for an electrode mix containing a semi-interpenetrating polymer network (semi-IPN) of polyvinyl alcohol and polyurethane, wherein the polyurethane is mixed to crosslink with the polyvinyl alcohol to form semi-IPN, and a lithium secondary battery comprising the same. The binder has superior adhesion to the electrode, excellent electrolyte resistance and improved elongation percentage, and therefore it is possible to prevent exfoliation or separation of electrode active materials from current collectors which occurs during repeated charge/discharge cycles. As a result, the capacity or power out of secondary batteries can be maintained at a constant level.02-25-2010
20100273061Low-inductive impedance, thermally decoupled, radii-modulated electrode core - An energy-storage device electrode core is disclosed that features relatively low-inductive impedance (and thus low equivalent series resistance (ESR)). Also disclosed is an energy-storage device electrode core that features a radii-modulated electrode core that forms extra vias to facilitate efficient heat removal away from the electrode, thus improving the performance and capabilities of an energy-storage device so equipped. The internal electrode core heat-removal vias are defined by the modulation patterns that in turn define the size and layout of the folds in the electrode, which are circumferentially collapsed about the center axis of the electrode core.10-28-2010
20090061322ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY AND ELECTRODE STRUCTURE HAVING THE ELECTRODE MATERIAL - The electrode material for a lithium secondary battery according to the present invention includes particles of a solid state alloy having silicon as a main component, wherein the particles of the solid state alloy have a microcrystal or amorphous material including an element other than silicon, dispersed in microcrystalline silicon or amorphized silicon. The solid state alloy preferably contains a pure metal or a solid solution. The composition of the alloy preferably has an element composition in which the alloy is completely mixed in a melted liquid state, whereby the alloy has a single phase in a melted liquid state without presence of two or more phases. The element composition can be determined by the kind of elements constituting the alloy and an atomic ratio of the elements.03-05-2009
20090325074LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous heat-resistant layer, and a nonaqueous electrolyte. The positive and negative electrodes reversibly absorb and release lithium ions, respectively. The porous heat-resistant layer is provided between the positive electrode and the negative electrode and includes a metal oxide as filler. The nonaqueous electrolyte is impregnated into the porous heat-resistant layer and exists between the positive electrode and the negative electrode. The filler of the porous heat-resistant layer has a particle diameter of 0.1 μm or more and 5.0 μm or less, D10 in particle size distribution measurement of 0.2 μm or more and 0.6 μm or less, and a mode diameter of 0.80 μm or more and 1.25 μm or less.12-31-2009
20100291442PRIMER FOR BATTERY ELECTRODE - Primer arrangements that facilitate electrical conduction and adhesive connection between an electroactive material and a current collector are presented. In some embodiments, primer arrangements described herein include first and second primer layers. The first primer layer may be designed to provide good adhesion to a conductive support. In one particular embodiment, the first primer layer comprises a substantially uncrosslinked polymer having hydroxyl functional groups, e.g., polyvinyl alcohol. The materials used to form the second primer layer may be chosen such that the second primer layer adheres well to both the first primer layer and an electroactive layer. In certain embodiments including combinations of first and second primer layers, one or both of the first and second primer layers comprises less than 30% by weight of a crosslinked polymeric material. A primer including only a single layer of polymeric material is also provided.11-18-2010
20090017384Process for producing composite cathode active material for non-aqueous electrolyte secondary cell - The present invention relates to a process for producing a composite cathode active material for a non-aqueous electrolyte secondary cell which is subjected to surface treatment, comprising: 01-15-2009
20110003208NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode for a non-aqueous electrolyte secondary battery including: a current collector; and an active material layer including at least two alloy-based active materials selected from the group consisting of silicon, tin, a silicon oxide, and a tin oxide. The active material layer includes a first portion supported on a surface of the current collector, a second portion supported on a surface of the first portion, and a third portion supported on a surface of the second portion. The first portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the first portion decreases continuously or stepwise as approaching the second portion. The second portion includes silicon or tin. The third portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the third portion increases continuously or stepwise with distance from the second portion.01-06-2011
20110045355ELECTRODE FOR LITHIUM BATTERY AND LITHIUM BATTERY - A lithium battery electrode body includes: a collector electrode; and an electrode mixture layer in which a plurality of first particles including electrode active material and a plurality of second particles including solid electrolyte are mixed, wherein the electrode mixture layer is provided on one of sides of the collector electrode, and an average particle size of the plurality of second particles is smaller than an average particle size of the plurality of first particles.02-24-2011
20100055571CURRENT COLLECTOR FOR THE ANODE OF A PRIMARY LITHIUM ELECTROCHEMICAL GENERATOR - An electrode comprising a metallic lithium strip (03-04-2010
20110236760Electrode for non-aqueous electrolyte secondary battery, method for producing the same, and non-aqueous electrolyte secondary battery - An electrode for a non-aqueous electrolyte secondary battery with which the non-aqueous electrolyte secondary battery can perform high output charge and discharge is provided. The electrode for a non-aqueous electrolyte secondary battery includes a current collector and an electrode active material layer containing active materials. The electrode active material layer has a structure in which the active material exists continuously with the active material particles binding to each other, and has a porous structure in which pores through which an electrolyte can pass are formed.09-29-2011
20100233546Nitride and Carbide Anode Materials - Described is an anode material which is a transition metal nitride or carbide in form of nanoparticles, preferably a nitride or carbide with one nitrogen or carbon per metal, and especially a nitride or carbide having rock salt structure. A preferred anode material is vanadium nitride, in particular carbon coated vanadium nitride having a mean particle size of <500 nm. Embedded in an electrically conducting environment, such nanoparticulate material, in particular the vanadium nitride shows exceptional good charging-discharging cycle stability.09-16-2010
20120328955LITHIUM SECONDARY BATTERY HAVING HIGH CAPACITY - A lithium battery is formed with a combination of an increased capacity negative electrode material capable of replacing a lithium metal electrode and a high capacity positive electrode material capable of realizing a high energy density. Particularly, the lithium secondary battery includes a negative electrode, and a positive electrode containing lithium oxide (Li12-27-2012
20100178566METHOD OF PRODUCING SILICON OXIDE, NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY USING THE SAME - A method for producing a silicon oxide including the steps of supplying silicon atoms onto a substrate through an oxygen atmosphere to form a silicon oxide layer on the substrate, and separating the silicon oxide layer from the substrate and pulverizing the separated silicon oxide layer to obtain silicon oxide containing silicon and oxygen in predetermined proportions, and a negative electrode active material obtained by the production method.07-15-2010
20080318131CATHODE ACTIVE MATERIAL FOR NONAQEOUS ELECTROLYTE BATTERY, METHOD OF PRODUCING THE SAME AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A cathode active material for nonaqueous electrolyte secondary battery is provided. The cathode active material includes: composite oxide particles containing at least lithium and cobalt; a coating layer disposed on at least a part of the surface of said composite oxide particles and including an oxide containing lithium and at least one coating element selected from nickel and manganese; and a surface layer disposed on at least a part of said coating layer and including an oxide containing at least one element selected from among lanthanoids.12-25-2008
20110159371IMPLANTABLE MEDICAL DEVICE INCLUDING EDDY CURRENT REDUCING BATTERY - An implantable device, such as a pacer, defibrillator, or other cardiac rhythm management device, can include one or more MRI Safe components. In an example, the implantable device includes a battery including a first electrode and a second electrode separate from the first electrode. The second electrode includes a first surface and a second surface. The second electrode includes a slot through the second electrode from the first surface toward the second surface. The slot extends from a perimeter of the second electrode to an interior of the second electrode. The slot is configured to at least partially segment a surface area of the second electrode to reduce a radial current loop size in the second electrode.06-30-2011
20080248393TIN IN AN ACTIVE SUPPORT MATRIX - An anode material made from nanoparticles, said anode material including a homogeneous mixture of lithium-alloying nanoparticles with active support matrix nanoparticles, is provided. The active support matrix nanoparticle is a compound that participates in the conversion reaction of the lithium battery. The compound is preferably a transition metal compound, with said compound including a nitride, carbide, oxide or combination thereof.10-09-2008
20130177816CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed is a cathode active material for secondary batteries comprising one or more compounds having a layered-crystal structure, represented by the following Formula 1, wherein a transition metal layer contains Li, in an amount lower than 20%, based on a total amount of a transition metal site, and a ratio of Ni positioned in a lithium layer, that is, a cation mixing ratio is 1% to 4.5%, based on a total amount of a lithium site in the lithium layer to stably support the layered-crystal structure: (1-s-t)[Li(Li07-11-2013
20130130122ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE ANODE ACTIVE MATERIAL - An anode active material includes a material alloyable with lithium coated with an oxide including lithium or coated with a complex of an oxide including lithium and an electrically conductive material. An anode of a lithium secondary battery includes the anode active material.05-23-2013
20080199780ELECTROCHEMICAL ELEMENT, METHOD FOR MANUFACTURING ELECTRODE THEREOF, AND LITHIATION TREATMENT METHOD AND LITHIATION TREATMENT APPARATUS - A method for manufacturing an electrode for an electrochemical element capable of absorbing and releasing lithium ions includes a lithiation treatment method for compensating an irreversible capacity of the electrode for an electrochemical element. In the lithiation treatment method, lithium is provided to the electrode by allowing a lithium vapor to flow with a movement route of the lithium vapor limited.08-21-2008
20080199779COMPOSITE ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND ANODE AND LITHIUM BATTERY CONTAINING THE MATERIAL - A composite anode active material including a transition metal; an intermetallic compound which includes the transition metal as one component and is capable of alloy formation with lithium; and carbon, where both the transition metal and the intermetallic compound have crystallinity, and the transition metal exists in a phase structurally separated from the intermetallic compound capable of alloy formation with lithium, where a content of the transition metal elements as both a metal and a component of the intermetallic compound may be less than 45 wt % based on the total weight of the transition metal and the intermetallic compound capable of alloy formation with lithium. The composite anode active material is a composite anode active material having a new structure, and includes a crystalline intermetallic compound, a crystalline transition metal, and carbon. In addition, an anode and lithium battery prepared using the composite anode active material have excellent charge-discharge characteristics.08-21-2008
20080261117NON-AQUEOUS ELECTROLYTE SECONDARY CELL - A non-aqueous electrolyte secondary cell having a high cycle characteristic and excellence in continuous charging characteristic at high potential is provided. The non-aqueous electrolyte secondary cell comprises a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, and a non-aqueous electrolyte having a non-aqueous solvent and electrolytic salt. The positive electrode contains lithium phosphate. The non-aqueous solvent contains a halogenated ethylene carbonate compound represented by chemical formula 1:10-23-2008
20100285366ACTIVE MATERIAL, BATTERY, AND METHOD FOR MANUFACTURING ELECTRODE - An active material for a nonaqueous electrolyte secondary battery includes first particles and second particles provided to coat the first particles so as to be scattered on the surfaces of the first particles. The circularity of the first particles coated with the second particles is 0.800 to 0.950, and the ratio r11-11-2010
20100291441NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode includes current collector in which concave portion and convex portion are formed at least one surface thereof, and columnar body which is formed by laminating n (n≧2) stages of columnar body portions which are formed on convex portion of current collector, and includes columnar body portions in which variation direction of content ratios of elements of odd-numbered stages of columnar body portions and that of even-numbered stages of columnar body portions are different from each other, and plural protruding bodies are provided on the surfaces of columnar body portions at the side in which intersection angles between central lines of obliquely erected directions of columnar body portions and a central line of a thickness direction of current collector, and space is provided in columnar body by protruding bodies of the laminated columnar body portions.11-18-2010
20100310940CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES WITH HIGH SAFETY, METHOD OF PREPARING THE SAME AND LITHIUM SECONDARY BATTERIES COMPRISING THE SAME - A cathode active material for a lithium secondary battery includes a lithium metal oxide secondary particle core formed by agglomerating lithium metal oxide primary particles; and a shell formed by coating the secondary particle core with barium titanate and metal oxide. This cathode active material allows making a lithium secondary battery having improved safety, particularly in thermal stability and overcharging characteristics.12-09-2010
20120282528METHOD FOR PREPARING POSITIVE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ACTIVE MATERIAL PREPARED THEREBY, AND LITHIUM ION SECONDARY BATTERY INCLUDING THE SAME - A method for preparing a positive active material for a lithium ion secondary battery, the method including obtaining a mixture by mixing a lithium containing compound and metal oxide, distributing powder of a lithium containing compound into a furnace, and heat treating the mixture in the furnace, wherein a thermal decomposition temperature of the lithium containing compound power distributed into the furnace is lower than that of the lithium containing compound mixed with the metal oxide.11-08-2012
20130183588CATHODE ACTIVE MATERIAL WITH HIGH CAPACITY AND IMPROVED CONDUCTIVITY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY COMPRISING THE SAME - Disclosed is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure, exhibits core-shell phase transition by which phase transition of a crystal structure occurs from a cubic structure to a tetragonal structure in a direction from the surface of particles to the center of the particles during discharging to the 3V region, and includes a conductive material at the shell to improve electrical conductivity of the tetragonal structure.07-18-2013
20110311875ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND METHOD FOR PREPARING THE SAME - The disclosure relates to an electrode active material including: (a) first particulate of a metal (or metalloid) oxide alloyable with lithium; and (b) second particulate of an oxide containing lithium and the same metal (or metalloid) as that of the metal (or metalloid) oxide, and to a secondary battery including the electrode active material. When the electrode active material is used as an anode active material, reduced amounts of an irreversible phase such as a lithium oxide or a lithium metal oxide are produced during initial charge-discharge of a battery since lithium is already contained in the second particulate before the initial charge-discharge, and thus a dead volume on the side of the cathode can be minimized and a high-capacity battery can be fabricated.12-22-2011
20120028124ANODE MATERIALS FOR LITHIUM-ION BATTERIES - An anode material for lithium-ion batteries is provided that comprises an elongated core structure capable of forming an alloy with lithium; and a plurality of nanostructures placed on a surface of the core structure, with each nanostructure being capable of forming an alloy with lithium and spaced at a predetermined distance from adjacent nanostructures.02-02-2012

Patent applications in class The alkali metal is lithium