SECONDARY BATTERY AND METHOD FOR PRODUCING SAME
    20.
    发明申请
    SECONDARY BATTERY AND METHOD FOR PRODUCING SAME 有权
    二次电池及其制造方法

    公开(公告)号:US20150255833A1

    公开(公告)日:2015-09-10

    申请号:US14438265

    申请日:2013-10-02

    摘要: Provided are a secondary battery having a configuration with which localized metal contaminant precipitation at the negative electrode can be reliably inhibited in less time, and a method for producing a secondary battery that allows reliable deactivation of metal contaminant in less time. The battery comprises a positive electrode, a negative electrode, and a separator placed between the two electrodes. The separator has an air resistance Rp≦100 sec in an in-plane direction vertical to its thickness direction and an air resistance Rt>Rp in the thickness direction. The method comprises a minimal charging step where the cell is charged to 0.01% to 0.5% capacity over at least one hour to obtain a state of charge where the positive and negative electrode potentials are at or above the oxidation and reduction potentials of a probable metal contaminant, respectively; and a step of performing initial conditioning charging.

    摘要翻译: 本发明提供一种二次电池,其具有可以在更短时间内可靠地抑制负极处的局部金属污染物沉淀的构造,以及能够在较短时间内使金属污染物可靠地失活的二次电池的制造方法。 电池包括正电极,负电极和放置在两个电极之间的隔膜。 分离器具有空气阻力Rp< nlE;垂直于其厚度方向的面内方向为100秒,厚度方向的空气阻力Rt> Rp。 该方法包括最小充电步骤,其中电池在至少一小时内充电至0.01%至0.5%容量,以获得负极电位等于或高于可能金属的氧化还原电位的电荷状态 污染物; 以及执行初始调节充电的步骤。