Patent application number | Description | Published |
20080206651 | ANODE, METHOD OF MANUFACTURING IT, AND BATTERY - A battery having a high charge and discharge efficiency is provided. An anode being provided with an anode active material layer on an anode current collector, in which the anode active material layer contains silicon as an anode active material and includes a compound film having Si—O bond and Si—N bond on at least part of the surface of the anode active material layer. | 08-28-2008 |
20080220337 | BATTERY - There is provided a battery including a positive electrode that includes an active material layer formed on a positive electrode current collector; a negative electrode that includes active material layers formed on first and second principal planes of a negative electrode current collector and the active material layer on the second principal plane has an alloyed region smaller than an alloyed region the active material layer has on the first principal plane between the second principal plane and the current collector; and an electrolyte. | 09-11-2008 |
20080220338 | ELECTRODE CURRENT COLLECTOR AND METHOD FOR PRODUCING THE SAME, ELECTRODE FOR BATTERY AND METHOD FOR PRODUCING THE SAME, AND SECONDARY BATTERY - A current collector forming an electrode for battery is provided. The electrode current collector includes a conductive layer made of copper or a copper alloy. Furthermore, the conductive layer has a plurality of crystallites, the crystallites containing crystallites having a cross-section area of 20 μm | 09-11-2008 |
20080233478 | ANODE, METHOD OF MANUFACTURING IT, BATTERY, AND METHOD OF MANUFACTURING IT - A battery capable of improving the cycle characteristics and the swollenness characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The node has an anode current collector and an anode active material layer provided thereon, and the anode active material layer contains a plurality of anode active material particles having silicon, and a metal material having a metal element not being alloyed with an electrode reactant in a gap between the anode active material particles. | 09-25-2008 |
20080280201 | NEGATIVE ELECTRODE FOR USE WITH SECONDARY BATTERY AND SECONDARY BATTERY USING SUCH NEGATIVE ELECTRODE - A negative electrode for a secondary battery includes a negative electrode current collector and a negative electrode active material layer provided in the negative electrode current collector and which is alloyed with the negative electrode current collector at least at a part of an boundary face between it and the negative electrode current collector, wherein the negative electrode current collector has a first surface on which the negative electrode active material layer is formed and a second surface on which the negative electrode active material layer is not formed, the negative electrode having a portion in which the second surfaces of the negative electrode current collector are opposed to each other. | 11-13-2008 |
20080305391 | ANODE AND BATTERY - A battery capable of improving cycle characteristics and a manufacturing yield is provided. An anode includes: an anode current collector; and an anode active material layer arranged on the anode current collector, in which the anode active material layer includes an anode active material including a plurality of pores, and the rate of change in the amount of mercury intruded into the plurality of pores is distributed so as to have a peak in a diameter range from 80 nm to 1200 nm both inclusive, the amount of mercury intruded being measured by mercury porosimetry. | 12-11-2008 |
20080305395 | ANODE AND SECONDARY BATTERY - A battery capable of improving cycle characteristics is provided. An anode includes: an anode current collector, and an anode active material layer arranged on the anode current collector, in which the anode active material layer includes an anode active material including silicon (Si), and including a pore group with a diameter ranging from 3 nm to 50 nm both inclusive, and the volumetric capacity per unit weight of silicon of the pore group with a diameter ranging from 3 nm to 50 nm both inclusive is 0.2 cm | 12-11-2008 |
20090004568 | ANODE AND BATTERY - A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode and an electrolytic solution. The anode has an anode current collector, an anode active material layer provided on the anode current collector, and a coat provided on the anode active material layer, in which the coat contains a fluorine resin having an ether bond. | 01-01-2009 |
20090035651 | ANODE AND BATTERY - A battery capable of improving cycle characteristics is provided. An anode includes: an anode active material layer including an anode active material on an anode current collector, the anode active material including silicon (Si) and having a plurality of pores, in which after electrode reaction, the volumetric capacity of a pore group with a diameter ranging from 3 nm to 200 nm both inclusive per unit weight of silicon is 0.3 cm | 02-05-2009 |
20090061079 | EVAPORATION APPARATUS, METHOD OF MANUFACTURING ANODE USING SAME, AND METHOD OF MANUFACTURING BATTERY USING SAME - An evaporation apparatus that is capable of stably forming a good quality thin film and is highly suitable for mass production is provided. The evaporation apparatus include an evaporation source discharging an evaporation material by heating, a retention member retaining an evaporation object, and a heat shield member that is located between the evaporation source and the evaporation object retained by the retention member, has an opening for passing the evaporation material in a state of vapor phase from the evaporation source to the evaporation object, and shields the evaporation object from part of radiation heat of the evaporation source. The heat shield member is located closer to the evaporation source than to the retention member. | 03-05-2009 |
20090061326 | CURRENT COLLECTOR, ANODE, AND BATTREY - A battery capable of improving the cycle characteristics is provided. A current collector containing copper (Cu), in which ratio I(200)/I(111) between intensity I (200) of a peak originated in (200) crystal plane of copper obtained by X-ray diffraction and intensity I (111) of a peak originated in (111) crystal plane thereof is in the range from 0.5 to 1.5. | 03-05-2009 |
20090068567 | ANODE FOR SECONDARY BATTERY, METHOD OF MANUFACTURING IT, AND SECONDARY BATTERY - An anode for secondary battery is provided with an anode active material layer containing silicon on an anode current collector. Silicon in the anode active material has an amorphous structure. In a Raman spectrum of silicon having the amorphous structure after an initial charge and discharge, 0.25≦LA/TO and/or 45≦LO/TO is satisfied, where an intensity of a scattering peak occurred in the vicinity of shift position 480 cm | 03-12-2009 |
20090092892 | ANODE AND METHOD OF MANUFACTURING THE SAME, AND BATTERY AND METHOD OF MANUFACTURING THE SAME - An anode capable of improving charge-discharge efficiency, and a method of manufacturing the anode, and a battery using the anode are provided. An anode | 04-09-2009 |
20090098458 | ANODE AND BATTERY - A battery capable of obtaining superior cycle characteristics and safety is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has an insulative coat on an anode active material layer provided on an anode current collector. The coat contains an insulating material such as a meal hydroxide and a metal oxide. The coat is in a form of plate divided into a plurality of portions. The insulation property of the coat prevents internal short circuit. A plurality of portions of the coat prevent separation of the anode active material layer and decomposition of the electrolytic solution. Further, even when short circuit occurs, heat generation is prevented by heat absorption characteristics of the coat. | 04-16-2009 |
20090111019 | ANODE AND BATTERY - A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has a coat on an anode active material layer provided on an anode current collector. The coat contains a fluorine resin. A terminal of the fluorine resin is a hydroxyl group or the like capable of being fixed (for example, being absorbed or bound) on the surface of the anode active material layer (anode active material). | 04-30-2009 |
20090111031 | ANODE ACTIVE MATERIAL, ANODE, AND BATTERY - A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The anode has an anode active material layer that contains an anode active material containing silicon on an anode current collector, and intensity ratio I | 04-30-2009 |
20090123839 | POSITIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM-ION SECONDARY BATTERY - A positive electrode for a lithium-ion secondary battery includes a positive-electrode mixture layer, which includes a positive-electrode active material containing lithium composite oxide, a conductive material, and a binder, and a current collector. The positive-electrode mixture layer contains a compound including sulfur and/or phosphorous, a first polymer serving as a main binder, and a second polymer different from the first polymer. | 05-14-2009 |
20090123851 | POSITIVE-ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, POSITIVE ELECTRODE, MANUFACTURING METHOD THEREOF, AND LITHIUM-ION SECONDARY BATTERY - A positive-electrode active material for a lithium-ion secondary battery has an average composition expressed by the following formula (1): | 05-14-2009 |
20090148778 | ANODE, METHOD OF MANUFACTURING IT, AND BATTERY - A battery having a high charge and discharge efficiency in which a spirally wound electrode body having a lamination structure of a cathode, an anode | 06-11-2009 |
20090246628 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving cycle characteristics is provided. An anode includes: an anode active material layer on an anode current collector, the anode active material layer including a plurality of anode active material particles, in which the average particle area of the plurality of anode active material particles observed from a surface of the anode active material layer is within a range of 1 μm | 10-01-2009 |
20090253033 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving the cycle characteristics and the swollenness characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode includes an anode active material layer having a plurality of fine pores on an anode current collector. The anode active material layer contains an anode active material and an anode binder. A change rate of a mercury intrusion into the plurality of fine pores measured by mercury penetration technique is distributed to show a peak in the pore diameter range from 30 nm to 10000 nm, both inclusive. | 10-08-2009 |
20090269677 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving the cycle characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has an anode structure on an anode current collector. The anode structure has a structure in which a plurality of anode active material particles having silicon are held by a plurality of metal fibers forming a three-dimensional network structure. Due to the plurality of metal fibers, sufficient conductive paths are obtained among the plurality of anode active material particles. Thus, compared to a general anode in which an active material layer is provided on a current collector made of a metal foil or the like, the current collectivity is improved. | 10-29-2009 |
20090291371 | ANODE AND SECONDARY BATTERY INCLUDING THE SAME - A secondary battery having high cycle characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolyte. In the anode, an anode active material layer containing silicon, carbon, and oxygen as an anode active material is provided on an anode current collector. In the anode active material, a content of carbon is from 0.2 atomic % to 10 atomic % both inclusive, and a content of oxygen is from 0.5 atomic % to 40 atomic % both inclusive. A ratio from 0.1% to 17.29% both inclusive of the silicon contained in the anode active material exists as Si—C bond. | 11-26-2009 |
20090311608 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving the cycle characteristics and the voltage retention characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolyte. The anode includes an anode current collector, an anode active material layer formed on the anode current collector and including an anode active material containing silicon as an element, and a coat formed on the anode active material layer and having an integral structure of three-dimensional network. | 12-17-2009 |
20090317726 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving the cycle characteristics and the initial charge and discharge characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode has an anode active material layer on an anode current collector. The anode active material layer contains a crystalline anode active material having silicon as an element, and is linked to the anode current collector. | 12-24-2009 |
20100092856 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving the cycle characteristics and the initial charge and discharge characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode has an anode active material layer on an anode current collector. The anode active material layer contains a crystalline anode active material having silicon as an element, and is linked to the anode current collector. | 04-15-2010 |
20100099018 | SECONDARY BATTERY - A secondary battery capable of improving cycle characteristics, initial charge and discharge characteristics, and swollenness characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. A cathode active material layer of the cathode contains a lithium-nickel based composite oxide (LiNi1-xMxO2) as a cathode active material capable of inserting and extracting lithium ions. An anode active material layer of the anode contains a material having silicon as an element as an anode active material capable of inserting and extracting lithium ions. The usage ratio in the fully charged state of the anode is set from 20% to 70% both inclusive, and the thickness in discharged state in the initial charge and discharge of the anode active material layer is 40 μm or less | 04-22-2010 |
20100104951 | ANODE CURRENT COLLECTOR, ANODE, AND SECONDARY BATTERY - A secondary battery that has superior safety and is able to provide more favorable cycle characteristics is provided. A laminated body in which a cathode and an anode are layered with a separator impregnated with an electrolytic solution in between is contained in a package can and a package cup. In the anode, an anode active material layer containing an anode active material such as silicon is provided on an anode current collector in which projection sections are formed on a base material. The base material contains carbon and sulfur respectively having a content ratio of 100 ppm or less, and contains crystallites having an average diameter of from 0.01 μm to 5 μm both inclusive. | 04-29-2010 |
20100124706 | SECONDARY BATTERY AND ANODE - A secondary battery capable of obtaining superior cycle characteristics and superior swollenness characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. An anode active material layer contains a crystalline anode active material having silicon as an element. The anode active material layer has a coating section where the surface of an anode current collector is coated with the anode active material and a non-coating section where the surface of the anode current collector is not coated with the anode active material but is exposed. Thereby, the physical property of the anode active material is hardly deteriorated with age. Further, at the time of charge and discharge, the anode active material layer is hardly expanded and shrunk, and thus the anode current collector is hardly deformed. | 05-20-2010 |
20100124707 | SECONDARY BATTERY AND ANODE - A secondary battery capable of obtaining superior cycle characteristics and superior swollenness characteristics is provided. The secondary battery includes a cathode and an anode capable of inserting and extracting an electrode reactant; and an electrolyte containing a solvent and an electrolyte salt. The anode has an anode active material layer on an anode current collector. The anode active material layer contains a plurality of crystalline anode active material particles having silicon (Si) as an element. The plurality of anode active material particles contain a spherical particle and a nonspherical particle. | 05-20-2010 |
20100159337 | ANODE AND SECONDARY BATTERY - A secondary battery is provided that is capable of improving the cycle characteristics. The secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated into a separator provided between the cathode and the anode. In the anode, an anode active material layer and a compound layer are provided on both faces of an anode current collector. The anode active material layer contains a plurality of anode active material particles. The anode active material particles have a multilayer structure of an anode active material containing silicon as an element. The thickness of each layer in the multilayer structure ranges from 50 nm to 1050 nm. Thus, contact characteristics between each layer, contact characteristics between the anode active material layer and the anode current collector, and current collectivity are improved. | 06-24-2010 |
20100190062 | NEGATIVE 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 |
20100233534 | RECHARGEABLE BATTERY, ANODE, AND CURRENT COLLECTOR - A rechargeable battery including a cathode and an anode each capable of inserting and extracting an electrode reaction material, and including an electrolyte, in which the anode includes an anode current collector which is formed by including a current collector body. The anode current collector is provided thereon with an active anode material layer, and a plurality of conductive particles disposed on the surface of the current collector body with the surface facing the active anode material layer. The plurality of conductive particles is formed to include spherical particles and plate-like particles. Since a tridimensional structure having irregularities is formed on the surface of the current collector body with the spherical particles and plate-like particles, anchoring effects are greatly increased. As a result, the adhesion of the active anode material layer to the anode current collector is considerably improved. | 09-16-2010 |
20110086269 | ANODE AND METHOD OF MANUFACTURING THE SAME, AND BATTERY AND METHOD OF MANUFACTURING THE SAME - An anode in which an anode active material layer is arranged on an anode current collector. The anode active material layer includes anode active material particles made of an anode active material including at least one of silicon and tin as an element. An oxide-containing film including an oxide of at least one kind selected from the group consisting of silicon, germanium and tin is formed in a region in contact with an electrolytic solution of the surface of each anode active material particle by a liquid-phase method such as a liquid-phase deposition method. The region in contact with the electrolytic solution of the surface of each anode active material particle is covered with the oxide-containing film, to thereby improve the chemical stability of the anode and the charge-discharge efficiency. The thickness of the oxide-containing film is preferably within a range from 0.1 nm to 500 nm both inclusive. | 04-14-2011 |
20110136008 | LITHIUM-ION SECONDARY BATTERY, ANODE FOR LITHIUM-ION SECONDARY BATTERY, POWER TOOL, ELECTRIC VEHICLE AND ENERGY STORAGE SYSTEM - A lithium-ion secondary battery allowed to improve cycle characteristics and initial charge-discharge characteristics is provided. The lithium-ion secondary battery includes: a cathode; an anode including an anode active material layer; and an electrolytic solution. The anode active material layer includes an anode active material and an inorganic compound, and the inorganic compound includes one or both of an alkoxysilane compound and a hydrolysate thereof. | 06-09-2011 |
20110143201 | BATTERY - A battery with more superior reliability is provided. The battery includes: a battery element in which a cathode having a cathode active material layer on a strip-shaped cathode current collector and an anode having an anode active material layer on a strip-shaped anode current collector are layered with a separator in between, wherein the anode active material layer is provided to occupy a first region that is overlapped with a cathode active material layer formation region in which the cathode active material layer is provided on the cathode current collector and a peripheral region thereof in the anode, and out of a second region adjacent to the first region in the longitudinal direction in the anode, a width of a third region in which the anode active material layer is not formed and the anode current collector is exposed is smaller than a width of the first region. | 06-16-2011 |
20110151326 | ANODE AND BATTERY - An anode capable of relaxing the stress concentration and improving the characteristics and a battery using it are provided. The anode includes an anode current collector and an anode active material layer containing silicon (Si) as an element, wherein the anode active material layer has a metal element increasing and decreasing region in which a metal element is contained as an element, and a concentration of the metal element is increased and then decreased in a thickness direction. | 06-23-2011 |
20110159368 | LITHIUM-ION SECONDARY BATTERY, ANODE FOR LITHIUM-ION SECONDARY BATTERY, POWER TOOL, ELECTRIC VEHICLE AND ENERGY STORAGE SYSTEM - A lithium-ion secondary battery allowed to improve cycle characteristics and initial charge-discharge characteristics is provided. The lithium-ion secondary battery includes a cathode; an anode; and an electrolytic solution. The anode includes an anode active material layer including a plurality of anode active material particles. The anode active material particles each include a core section and a coating section applied to a part or a whole of a surface of the core section, and the core section includes a silicon-based material (SiO | 06-30-2011 |
20110183207 | LITHIUM ION SECONDARY BATTERY AND ANODE FOR LITHIUM ION SECONDARY BATTERY - There is provided a lithium ion secondary battery including: a cathode; an anode: and an electrolytic solution. The anode has an anode active material layer on an anode current collector, the anode active material layer contains an anode active material having silicon (Si) as an element and a metal conductive material having a metal element as an element, and a void ratio of the anode active material layer measured by mercury intrusion method (pressure: 90 MPa) is 10% or less. | 07-28-2011 |
20110192622 | ANODE FOR LITHIUM ION SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, ELECTRIC POWER TOOL, ELECTRICAL VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - There is provided an anode for a lithium ion secondary battery capable of improving the cycle characteristics, a lithium ion secondary battery using the same, an electric power tool using the lithium ion secondary battery, an electrical vehicle using the lithium ion secondary battery, and an electric power storage system using the lithium ion secondary battery. The anode for a lithium ion secondary battery includes an anode active material layer in which a first layer and a second layer respectively containing silicon and a metal element as an anode active material are alternately layered on an anode current collector, and 1.02≦A/B≦50 is satisfied. A represents a silicon content ratio in the anode active material in the first layer, and B represents a silicon content ratio in the anode active material in the second layer. | 08-11-2011 |
20110192623 | ANODE FOR LITHIUM ION SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, ELECTRIC TOOL, BATTERY CAR, AND ELECTRIC POWER STORAGE SYSTEM - A lithium ion secondary battery having superior cycle characteristic is provided. The lithium ion secondary battery includes a cathode, an anode and an electrolyte. The anode has an anode active material layer including a plurality of anode active material fibers containing silicon as an element provided on an anode current collector. | 08-11-2011 |
20120040242 | ANODE 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 |
20120135285 | NONAQUEOUS ELECTROLYTE BATTERY - There is provided a nonaqueous electrolyte battery including a first electrode having a strip shape, a second electrode having a strip shape, a first electrode lead, a second electrode lead, a separator having a strip shape that is disposed between the first electrode and the second electrode, and a nonaqueous electrolyte. A laminated electrode body, which is obtained by laminating the first electrode and the second electrode through the separator in such a manner that the second electrode lead is disposed at the other end portion of the second electrode not opposite to one end portion of the first electrode to which the first electrode lead is connected, is wound in a longitudinal direction with one end to which the first electrode lead is connected made as an initial end, and a wound electrode body is obtained. | 05-31-2012 |
20120164525 | LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, ELECTRIC TOOL, ELECTRIC VEHICLE, AND POWER STORAGE SYSTEM - A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode contains a positive electrode active material including element M2 incorporated in a crystal structure in a surface layer area of a complex oxide, the oxide including the element M1 and being represented by the following formula (1), M2 being different from M1. The element M2 is at least one kind selected from the group consisting of magnesium Mg, calcium Ca, titanium Ti, zirconium Zr, sulfur S, fluorine F, iron Fe, copper Cu, boron B, aluminum Al, phosphorus P, carbon C, manganese Mn, nickel Ni, and cobalt Co. | 06-28-2012 |
20120164532 | LITHIUM ION SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, ELECTRIC TOOL, ELECTRIC VEHICLE, AND POWER STORAGE SYSTEM - A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution, wherein the positive electrode includes a first lithium composite oxide and a second lithium composite oxide expressed by the following equation (1), as a positive electrode active material, and a charge capacity (vs lithium metal) per unit volume during a charge and discharge of a first cycle is larger in the second lithium composite oxide compared to the first lithium composite oxide, and a discharge voltage (vs lithium metal) during the charge and discharge of the first cycle is lower in the second lithium composite oxide compared to the first lithium composite oxide, Li | 06-28-2012 |
20120164533 | LITHIUM ION SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, ELECTRIC TOOL, ELECTRIC VEHICLE, AND POWER STORAGE SYSTEM - A lithium ion secondary battery including a positive electrode; a negative electrode; and an electrolytic solution, wherein the positive electrode includes a first lithium composite oxide and a second lithium composite oxide expressed by following formula (1) as a positive electrode active material, and wherein the second lithium composite oxide has a charge capacity greater than the first lithium composite oxide | 06-28-2012 |
20120225350 | CATHODE ACTIVE MATERIAL, ITS MANUFACTURING METHOD, CATHODE, ITS MANUFACTURING METHOD, AND SECONDARY BATTERY - A secondary battery having a cathode, an anode, and an electrolyte is provided. The cathode includes a cathode active material containing at least one kind selected from the group consisting of sulfur S and phosphorus P in a portion near the particle surface of a lithium composite oxide. A content of the kind in the portion is larger than that in the particle of the lithium composite oxide. | 09-06-2012 |
20120268073 | NONAQUEOUS ELECTROLYTE BATTERY, ROLLED ELECTRODE ASSEMBLY COLLECTOR, LAYER-BUILT ELECTRODE ASSEMBLY COLLECTOR, AND METHOD FOR MANUFACTURING NONAQUEOUS ELECTROLYTE BATTERY COLLECTOR - A nonaqueous electrolyte battery provided with a rolled electrode assembly, in which a positive electrode including a positive electrode active material layer disposed on a positive electrode collector formed from metal foil and a negative electrode including a negative electrode active material layer disposed on a negative electrode collector formed from metal foil are stacked with a separator therebetween and are rolled, and an electrolyte, wherein at least one of the positive electrode collector and the negative electrode collector has a compressed pattern portion which is disposed as a part of the metal foil and which has a thickness smaller than that of the other portion through compression, and the compressed pattern portion from one end parallel to the rolling direction of the metal foil to the other end opposite to the one end is not disposed continuously in the direction orthogonal to the rolling direction of the metal foil. | 10-25-2012 |
20120301786 | LITHIUM ION SECONDARY BATTERY, ELECTRIC TOOL, ELECTRIC VEHICLE, AND POWER STORAGE SYSTEM - A lithium ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode contains a lithium composite oxide. The negative electrode contains a material including at least one of silicon Si and tin Sn as a constituent element. The lithium composite oxide includes lithium Li having a composition ratio a, a first element having a composition ratio b, and a second element having a composition ratio c as a constituent element. The first element including two kinds or more selected from among manganese Mn, nickel Ni, and cobalt Co, and including at least manganese. The second element including at least one kind selected from among aluminum Al, titanium Ti, magnesium Mg, and boron B. The composition ratios a to c satisfy the relationships of 1.1b+c. | 11-29-2012 |
20120326500 | LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, POWER STORAGE SYSTEM, ELECTRIC TOOL, AND ELECTRONIC DEVICE - A lithium-ion secondary battery includes a positive electrode, a negative electrode containing an active material, and an electrolytic solution, in which the active material contains, as constituent elements, Si, O, and at least one element Ml selected from Li, C, Mg, Al, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ge, Zr, Mo, Ag, Sn, Ba, W, Ta, Na, and K, and the atomic ratio x (O/Si) of O to Si is 0.5≦x≦1.8. | 12-27-2012 |
20120328915 | LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, POWER STORAGE SYSTEM, ELECTRIC TOOL, AND ELECTRONIC DEVICE - A lithium-ion secondary battery includes a positive electrode, a negative electrode containing an active material, and an electrolytic solution, in which the active material includes a core portion capable of occluding and releasing lithium ions, and a covering portion arranged on at least part of a surface of the core portion, in which the covering portion contains, as constituent elements, Si, O, and at least one element M1 selected from Li, C, Mg, Al, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ge, Zr, Mo, Ag, Sn, Ba, W, Ta, Na, and K, and the atomic ratio y (O/Si) of O to Si is 0.5≦y≦1.8. | 12-27-2012 |
20120328945 | LITHIUM ION SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, BATTERY PACK, ELECTRIC VEHICLE, ELECTRICITY STORAGE SYSTEM, POWER TOOL, AND ELECTRONIC APPARATUS - A lithium ion secondary battery is provided with a positive electrode, a negative electrode containing an active material, and an electrolytic solution, wherein the active material includes a core portion capable of occluding and releasing lithium ions, an amorphous or low-crystalline coating portion disposed on at least a part of the surface of the core portion, and a fibrous carbon portion disposed on at least a part of the surface of the coating portion, and the coating portion contains Si and O as constituent elements, while the atomic ratio y (O/Si) of O relative to Si satisfies 0.5≦y≦1.8. | 12-27-2012 |
20130157127 | ACTIVE 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 |
20140065450 | SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, BATTERY PACK, AND ELECTRIC VEHICLE - A secondary battery includes: a cathode; an anode; and an electrolytic solution, wherein the anode includes an anode active material layer, the anode active material layer being provided on part of an anode current collector, and a breaking elongation δ2 (percent) of the anode current collector in a second region is larger than a breaking elongation δ1 (percent) of the anode current collector in a first region, the second region not being provided with the anode active material layer, and the first region being provided with the anode active material layer. | 03-06-2014 |
20140114519 | BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, BATTERY PACK, ELECTRONIC DEVICE, ELECTRIC VEHICLE, POWER STORAGE DEVICE, AND POWER SYSTEM - There is provided a battery including a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode active material layer, on at least one surface of a positive electrode current collector, including a binder and a positive electrode active material of a deoxidized lithium transition metal composite oxide. The positive electrode active material layer shows first and second peaks of oxygen amounts generated from a type of the positive electrode active material in the positive electrode active material layer when the positive electrode active material layer is heated in a charge state of higher than or equal to 4.2 V and lower than or equal to 4.5 V in a lithium antipode potential, the second peak appearing in a temperature region higher than a temperature region of the first peak. At least the second peak appears in a temperature region higher than 220° C. | 04-24-2014 |
20140154566 | ANODE FOR SECONDARY BATTERY, SECONDARY BATTERY, AND METHOD OF MANUFACTURING ANODE FOR SECONDARY BATTERY - An anode for a secondary battery capable of improving cycle characteristics, a secondary battery using the anode, and a method of manufacturing an anode for secondary battery. An anode active material layer is formed by vapor phase deposition method, and contains Si as an element. In the anode active material layer, there are a plurality of primary particles grown in the thickness direction. The primary particles aggregate and form a plurality of secondary particles. At least some of the primary particles have shape curved in the identical direction to an anode current collector on the cross section in the thickness direction. Thereby, stress due to expansion and shrinkage due to charge and discharge can be relaxed. | 06-05-2014 |
20140162120 | ANODE AND BATTERY - A battery including a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has an insulative coat on an anode active material layer provided on an anode current collector. The coat contains an insulating material such as a meal hydroxide and a metal oxide. The coat is in a form of plate divided into a plurality of portions. The insulation property of the coat prevents internal short circuit. A plurality of portions of the coat prevent separation of the anode active material layer and decomposition of the electrolytic solution. Further, even when short circuit occurs, heat generation is prevented by heat absorption characteristics of the coat. | 06-12-2014 |
20140295263 | SECONDARY BATTERY - A secondary battery includes: a cathode and an anode that are opposed to each other with a separator in between; and an electrolytic solution, wherein the cathode includes a cathode current collector and a cathode active material layer provided between the cathode current collector and the separator, the anode includes an anode current collector and an anode active material layer provided between the anode current collector and the separator, one or more of the cathode, the anode, and the separator includes a plurality of thermally-conductive particles in a region between the cathode current collector and the anode current collector, and heat conductivity of the thermally-conductive particles is larger in a second direction that intersects with a first direction, in which the cathode and the anode are opposed to each other, than in the first direction. | 10-02-2014 |
20140295270 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving cycle characteristics is provided. An anode includes: an anode active material layer on an anode current collector, the anode active material layer including a plurality of anode active material particles, in which the average particle area of the plurality of anode active material particles observed from a surface of the anode active material layer is within a range of 1 μm | 10-02-2014 |
20140349187 | SECONDARY BATTERY-USE ACTIVE MATERIAL, SECONDARY BATTERY, AND ELECTRONIC APPARATUS - A secondary battery capable of obtaining superior battery characteristics is provided. The secondary battery of the present technology includes a cathode, an anode including an active material, and an electrolytic solution. The active material includes a core section and covering section, the core section being capable of inserting and extracting lithium ions, and the covering section being provided in at least part of a surface of the core section and being a low-crystalline or a noncrystalline. The core section includes Si and O as constituent elements, and an atom ratio x (O/Si) of O with respect to Si satisfies O≦x<0.5. The covering section includes Si and O as constituent elements, and an atom ratio y (O/Si) of O with respect to Si satisfies 0.5≦y≦1.8. The covering section has voids, and a carbon-containing material is provided in at least part of the voids. | 11-27-2014 |
20150079468 | ANODE AND BATTERY - A battery including a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has a coat on an anode active material layer provided on an anode current collector. The coat contains a fluorine resin. A terminal of the fluorine resin is a hydroxyl group or the like capable of being fixed (for example, being absorbed or bound) on the surface of the anode active material layer (anode active material). | 03-19-2015 |
20150086879 | ANODE AND METHOD OF MANUFACTURING THE SAME, AND BATTERY AND METHOD OF MANUFACTURING THE SAME - An anode in which an anode active material layer is arranged on an anode current collector. The anode active material layer includes anode active material particles made of an anode active material including at least one of silicon and tin as an element. An oxide-containing film including an oxide of at least one kind selected from the group consisting of silicon, germanium and tin is formed in a region in contact with an electrolytic solution of the surface of each anode active material particle by a liquid-phase method such as a liquid-phase deposition method. The region in contact with the electrolytic solution of the surface of each anode active material particle is covered with the oxide-containing film, to thereby improve the chemical stability of the anode and the charge-discharge efficiency. The thickness of the oxide-containing film is preferably within a range from 0.1 nm to 500 nm both inclusive. | 03-26-2015 |