COPPER FOIL FOR CURRENT COLLECTOR OF LITHIUM SECONDARY BATTERY
    20.
    发明申请
    COPPER FOIL FOR CURRENT COLLECTOR OF LITHIUM SECONDARY BATTERY 审中-公开
    锂二次电池电流收集器铜箔

    公开(公告)号:US20120040241A1

    公开(公告)日:2012-02-16

    申请号:US12962180

    申请日:2010-12-07

    IPC分类号: H01M4/66

    摘要: A copper foil for a current collector of a lithium secondary battery is configured such that a nodule cluster having an inter-nodule aspect ratio of 0.001 to 2 is provided at a matte side formed on one surface of the copper foil, in aspect of a crystal structure, a ratio of a texture coefficient of a (200) surface to a sum of texture coefficients of a (111) surface and the (200) surface is 30 to 80%, the copper foil has a water contact angle of 90° or below, and impurity spots existing at the surface of the copper foil have a maximum diameter of 100 μm or less, and a minimal spacing distance between the impurity spots is 1 cm or more.

    摘要翻译: 另外,作为锂二次电池用集电体的铜箔,在铜箔的一面形成的无光泽面上设置结晶长宽比为0.001〜2的结核团, (200)表面的织构系数与(111)面和(200)表面的织构系数之和的比例为30〜80%,铜箔的接触角为90°, 并且存在于铜箔表面的杂质点的最大直径为100μm以下,杂质点之间的最小间隔距离为1cm以上。