Anode for secondary battery and secondary battery having the same
    62.
    发明授权
    Anode for secondary battery and secondary battery having the same 有权
    具有二次电池和二次电池的阳极具有相同的功能

    公开(公告)号:US09005819B2

    公开(公告)日:2015-04-14

    申请号:US14187765

    申请日:2014-02-24

    Applicant: LG Chem, Ltd.

    Abstract: The present invention relates to an anode for a secondary battery, comprising: a wire-type current collector; a metal-based anode active material layer formed on the surface of the wire-type current collector, and comprising a metallic active material; and a graphite-based anode composite layer formed on the surface of the metal-based anode active material layer, and comprising a mixture of a graphite-based active material, a conductive material and a first polymer binder.The anode of the present invention has the metal-based anode active material layer together with the graphite-based anode composite layer acting as a buffer, thereby preventing the metallic active material from being isolated or released even if excessive volume expansion occurs during charging and discharging processes. Also, the graphite-based anode composite layer has good affinity with an organic electrolyte solution to compensate the defect of the metallic active material having low affinity with an organic electrolyte solution.

    Abstract translation: 二次电池用阳极技术领域本发明涉及一种二次电池用阳极,其包括:线型集电体; 金属基阳极活性物质层,形成在所述线状集电体的表面上,并且包含金属活性物质; 以及形成在金属基负极活性物质层的表面上的石墨基阳极复合层,并且包含石墨基活性材料,导电材料和第一聚合物粘合剂的混合物。 本发明的阳极具有金属基负极活性物质层和作为缓冲剂的石墨基阳极复合层,从而防止金属活性物质即使在充放电期间发生体积膨胀过大也被隔离或释放 过程。 此外,石墨基阳极复合层与有机电解质溶液具有良好的亲和性,以补偿与有机电解质溶液具有低亲和性的金属活性材料的缺陷。

    Cable-type secondary battery
    70.
    发明授权
    Cable-type secondary battery 有权
    电缆式二次电池

    公开(公告)号:US08906535B2

    公开(公告)日:2014-12-09

    申请号:US14178864

    申请日:2014-02-12

    Applicant: LG Chem, Ltd.

    Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: a core for supplying lithium ions; an inner electrode, comprising a spiral electrode formed by spirally twisting two or more wire-type inner current collectors coated with an inner electrode active material on the surface thereof; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer, and comprising an outer electrode active material layer and an outer current collector.The core for supplying lithium ions is disposed in the inner electrode, from which the electrolyte of the core for supplying lithium ions can be easily penetrated into an electrode active material, thereby facilitating the supply and exchange of lithium ions.

    Abstract translation: 本发明涉及一种具有预定形状并纵向延伸的水平横截面的电缆型二次电池,包括:用于提供锂离子的芯; 内部电极,包括螺旋状电极,其通过在其表面上螺旋状地卷绕涂覆有内部电极活性物质的两根以上的线型内部集电体而形成; 围绕所述内部电极的外表面的分离层,以防止电极之间的短路; 以及包围分离层的外表面的外电极,并且包括外电极活性物质层和外集电体。 用于提供锂离子的核心设置在内部电极中,用于提供锂离子的芯的电解质可以从该电极容易地穿过其中,从而便于锂离子的供应和交换。

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