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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |