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    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

    申请人： Dong min Im ,  Dai-kyu Kim ,  Han-su Kim ,  Jin-hwan Park ,  Gue-sung Kim

    发明人： Dong min Im ,  Dai-kyu Kim ,  Han-su Kim ,  Jin-hwan Park ,  Gue-sung Kim

    IPC分类号： H01M4/62 ,  H01M4/40

    CPC分类号： H01M4/62 ,  H01M4/02 ,  H01M4/134 ,  H01M4/366 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/405 ,  H01M10/052

    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。

    Cathode active material, method of preparing the same, and cathode and lithium battery applying the material
    7.
    发明授权
    Cathode active material, method of preparing the same, and cathode and lithium battery applying the material 有权
    阴极活性物质，其制备方法以及施加材料的阴极和锂电池

    公开(公告)号：US07547491B2

    公开(公告)日：2009-06-16

    申请号：US11359983

    申请日：2006-02-21

    申请人： Yong-nam Ham ,  Gue-sung Kim ,  Young-min Choi

    发明人： Yong-nam Ham ,  Gue-sung Kim ,  Young-min Choi

    IPC分类号： H01M4/48

    CPC分类号： H01M4/525 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M10/0525 ,  H01M10/0587

    摘要： Composite cathode active materials comprising a composite oxide and an acid treated with an organic solvent are provided. The composite cathode active materials are prepared by treating mixtures of nickel-based composite oxides and organic acids with organic solvents. The active materials suppress gelation of the electrode slurries for a long period of time, even when the active materials are mixed with fluorine-based polymers, by decreasing the basicity of the slurries and the amount of lithium present on the surfaces of the active materials. As a result, electrode slurries having high stability can be prepared. Cathodes and lithium batteries comprising the slurries have excellent charge-discharge characteristics, including high capacity and excellent high rate discharge characteristics.

    摘要翻译： 提供包含复合氧化物和用有机溶剂处理的酸的复合阴极活性材料。 通过用有机溶剂处理镍基复合氧化物和有机酸的混合物来制备复合阴极活性材料。 即使活性物质与氟系聚合物混合，活性物质也能抑制电极浆料的凝胶化，通过降低浆料的碱度和存在于活性物质表面上的锂的量。 结果，可以制备具有高稳定性的电极浆料。 包括浆料的阴极和锂电池具有优异的充放电特性，包括高容量和优异的高倍率放电特性。