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    • 11. 发明专利
    • Negative electrode for lithium secondary battery, and lithium secondary battery
    • 锂二次电池负极和锂二次电池
    • JP2006269242A
    • 2006-10-05
    • JP2005085372
    • 2005-03-24
    • Sanyo Electric Co Ltd三洋電機株式会社
    • MINAMI HIROYUKIFUKUI ATSUSHIYAGI HIROMASAJINNO MARUO
    • H01M4/02H01M4/04H01M4/134H01M4/1395H01M4/38H01M4/62H01M4/64H01M4/66H01M10/05
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a negative electrode for lithium secondary battery in which a negative electrode mixture layer including a negative electrode active material containing silicon and/or silicon alloy and a binder is made to be sufficiently adhered to a negative electrode current collector and cycle life of the lithium secondary battery is improved. SOLUTION: As for a negative electrode 11 for lithium secondary battery, a conductive intermediate layer 11b which does not react with Li is deposited and formed on a negative electrode current collector 11a consisting of a metal foil by supplying a material from a gas phase, and a negative electrode mixture layer 11c including a negative electrode active material containing silicon and/or silicon alloy and a binder is formed on this conductive intermediate layer, and with this state, these are sintered in a non-oxidizing atmosphere. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:为了提供一种锂二次电池的负极,其中包括含有硅和/或硅合金的负极活性物质和粘合剂的负极混合物层被充分粘附到负极 提高了锂二次电池的集电极和循环寿命。 解决方案:对于锂二次电池用负极11,通过从气体供给材料,在由金属箔构成的负极集电体11a上沉积不与Li反应的导电性中间层11b 在该导电性中间层上形成含有硅和/或硅合金的负极活性物质和粘合剂的负极合剂层11c,在这种状态下,在非氧化性气氛中烧结。 版权所有(C)2007,JPO&INPIT
    • 15. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2011159619A
    • 2011-08-18
    • JP2010172122
    • 2010-07-30
    • Sanyo Electric Co Ltd三洋電機株式会社
    • CHITO DAIZOOGASAWARA TAKESHIFUKUI ATSUSHI
    • H01M4/36H01M4/505H01M4/525H01M10/052
    • H01M4/485H01M4/134H01M4/525H01M4/62H01M10/0525Y02E60/122Y02T10/7011
    • PROBLEM TO BE SOLVED: To provide a lithium secondary battery which is excellent on charge and discharge cycle characteristics at high energy density by restraining oxidative decomposition on the surface of a positive electrode active material particle, even though a nonaqueous electrolytic reduction decomposition product produced on the surface of a silicon negative electrode active material particle at the time of charge and discharge is diffused and migrated. SOLUTION: In the lithium secondary battery having a positive electrode 1 including a positive electrode active material containing lithium cobaltate particles, a negative electrode 2 including a negative electrode active material containing silicon particles, a separator 3 arranged between the positive electrode 1 and the negative electrode 2, and a nonaqueous electrolyte, erbium hydroxide particles or erbium oxy-hydroxide particles are adhered on the surface of each lithium cobaltate particle at a dispersed state. COPYRIGHT: (C)2011,JPO&INPIT
    • 解决的问题:为了提供一种通过抑制正极活性物质颗粒的表面上的氧化分解而在高能量密度下的充放电循环特性优异的锂二次电池,即使非水电解还原分解产物 在充放电时在硅负极活性物质粒子表面产生的扩散迁移。 解决方案:在具有包含含有钴酸锂颗粒的正极活性物质的正极1的锂二次电池中,包含含有硅颗粒的负极活性物质的负极2,配置在正极1和 负极2和非水电解质,分散状态的钴酸锂粒子的表面附着有氢氧化铒或粒子状氢氧化钆粒子。 版权所有(C)2011,JPO&INPIT
    • 19. 发明专利
    • Negative electrode for lithium secondary battery and lithium secondary battery
    • 用于锂二次电池和锂二次电池的负极
    • JP2008124036A
    • 2008-05-29
    • JP2008002749
    • 2008-01-10
    • Sanyo Electric Co Ltd三洋電機株式会社
    • KUSUMOTO YASUYUKIFUKUI ATSUSHINAKAMURA HIROSHI
    • H01M4/66H01M4/134
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To prevent deformation of a negative electrode attendant on repeating of charge discharge, suppress deterioration of contact between a negative electrode material and a negative current collector caused by charge/discharge, and enhance charge/discharge cycle characteristics in a lithium secondary battery using the negative electrode for the lithium secondary battery formed by attaching the negative electrode material on the surface of the negative current collector.
      SOLUTION: The negative electrode 13 for the lithium secondary battery is formed by attaching the negative electrode material which is alloyed with lithium on the negative current collector 13a having a proportional limit of 2.0 N/mm or more. The negative electrode is used in the lithium secondary battery.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题为了防止在重复充放电时负极服务员的变形,抑制由充放电引起的负极材料和负极集电体之间的接触的劣化,并且增强充电/放电循环特性 使用负极用于锂二次电池的锂二次电池,其通过将负极材料附着在负极集电体的表面上而形成。 解决方案:用于锂二次电池的负极13是通过将与锂合金的负极材料附着在比例极限为2.0N / mm以上的负极集电体13a上而形成的。 负极用于锂二次电池。 版权所有(C)2008,JPO&INPIT
    • 20. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2007258084A
    • 2007-10-04
    • JP2006083340
    • 2006-03-24
    • Sanyo Electric Co Ltd三洋電機株式会社
    • YAMAMOTO HIDEKAZUFUKUI ATSUSHIKUSUMOTO YASUYUKI
    • H01M2/02H01M4/38H01M10/05H01M10/052H01M10/0587
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a lithium secondary battery capable of preventing the thickness of the battery from being increased by charge and discharge, excelling in a charge-discharge characteristic, and having high energy density. SOLUTION: This lithium secondary battery uses a negative electrode 2 including Si or a Si alloy in an active material, and is composed by storing, in a battery case 20 along with a nonaqueous electrolyte, a flat electrode body 10 flatly rolled by interposing a separator 3 between a positive electrode 1 and the negative electrode. Pressure not smaller than 1.0×10 4 N/m 2 is made to act on a flat part of the flat electrode body at least in first charge/discharge of the lithium secondary battery. COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:提供一种能够防止电池的厚度由于充放电而增加的锂二次电池,充放电特性优异,能量密度高的锂二次电池。 解决方案:该锂二次电池在活性物质中使用包含Si或Si合金的负极2,并且在电池壳体20中与非水电解质一起将由扁平电极体10平坦地卷绕的扁平电极体10 在正极1和负极之间插入隔板3。 至少在锂二次电池的第一充电/放电中,使不小于1.0×10 4 N / m 2 的压力作用在平坦电极体的平坦部分上 电池。 版权所有(C)2008,JPO&INPIT