Anode active material and lithium battery using the same
    5.
    发明申请
    Anode active material and lithium battery using the same 有权
    阳极活性物质和锂电池使用相同

    公开(公告)号:US20070128516A1

    公开(公告)日:2007-06-07

    申请号:US11606658

    申请日:2006-11-29

    IPC分类号: H01M4/62 H01M4/40

    摘要: An anode active material and a lithium battery employing the same are provided. In one embodiment of the anode active material, a —(CH2CH2O)— repeating unit is bonded to the surface of metal particles that contain metals that can be alloyed with lithium. The repeating unit prevents reactions between the metal particles and the electrolyte solution. Also, due to its elasticity, the repeating unit absorbs part of the volume expansion of the metal particles. The repeating unit also prevents the metal particles from condensing, thereby enhancing dispersion properties. Accordingly, the inventive anode active material has high capacity and excellent capacity retention during repeated charging and discharging, thereby providing a lithium battery with a long cycle life.

    摘要翻译: 提供了一种负极活性材料和使用其的锂电池。 在阳极活性材料的一个实施方案中, - (CH 2 CH 2 CH 2 O) - 重复单元被结合到包含可以合金化的金属的金属颗粒的表面上 与锂。 重复单元防止金属颗粒和电解质溶液之间的反应。 此外,由于其弹性,重复单元吸收金属颗粒的体积膨胀的一部分。 重复单元还防止金属颗粒冷凝,从而增强分散性能。 因此,本发明的阳极活性物质在反复充放电期间具有高容量和优异的容量保持性,从而提供了具有长循环寿命的锂电池。