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    • 4. 发明公开
    • Battery with special anode material
    • Batterie mit speziellem Anodenmaterial
    • EP1469537A3
    • 2005-11-02
    • EP04008481.6
    • 2004-04-07
    • SONY CORPORATION
    • Miyaki, YukioTakada, TomooKawase, KenichiIijima, Yukiko
    • H01M4/02H01M4/12
    • H01M4/13H01M4/0421H01M4/0471H01M4/38H01M4/386H01M4/387H01M4/58H01M4/661H01M10/0431H01M10/052H01M10/38H01M2004/027H01M2010/4292
    • Provided is a battery capable of obtaining superior cycle characteristics. The battery comprises a cylindrical type spirally wound body including a spirally wound laminate of a cathode and an anode with a separator in which an electrolyte solution is impregnated. The anode includes an anode current collector, an outer anode active material layer disposed on an outer winding surface of the anode current collector and an inner anode active material layer disposed on an inner winding surface of the anode current collector. The outer anode active material layer and the inner anode active material layer include Si, Sn or a compound thereof. As a capacity ratio between the outer anode active material layer and the inner anode active material layer in at least a region, assuming that the capacity of the outer anode active material layer is 1, the capacity of the inner anode active material layer facing the outer anode active material layer with the anode current collector in between is within a range of 0.6 to 0.8 inclusive.
    • 提供能够获得优异的循环特性的电池。 电池包括圆柱形螺旋卷绕体,其包括阴极和阳极的螺旋卷绕的层压体,其中浸渍有电解质溶液的隔膜。 阳极包括阳极集电器,设置在阳极集电器的外绕组表面上的外阳极活性材料层和设置在阳极集电器的内绕组表面上的内阳极活性材料层。 外部负极活性物质层和内部负极活性物质层包括Si,Sn或其化合物。 作为外侧负极活性物质层和内部负极活性物质层的至少一部分的容量比,假设外部负极活性物质层的容量为1,则内侧阳极活性物质层的面向外部的容量 阳极集电体之间的负极活性物质层在0.6〜0.8的范围内。