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    Silicon-carbon Composite Anode Material for Lithium Ion Batteries and A Preparation Method Thereof
    4.
    发明申请
    Silicon-carbon Composite Anode Material for Lithium Ion Batteries and A Preparation Method Thereof 有权
    用于锂离子电池的碳 - 碳复合阳极材料及其制备方法

    公开(公告)号：US20140147751A1

    公开(公告)日：2014-05-29

    申请号：US14005791

    申请日：2012-03-17

    申请人： Jun Yang ,  Pengfei Gao ,  Haiping Jia ,  Jiulin Wang ,  Yanna Nuli

    发明人： Jun Yang ,  Pengfei Gao ,  Haiping Jia ,  Jiulin Wang ,  Yanna Nuli

    IPC分类号： H01M4/36 ,  C23C18/12 ,  C23C16/26

    CPC分类号： C23C18/1275 ,  C23C16/26 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/587 ,  H01M10/052

    摘要： Disclosed in the invention are a silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof The material consists of a porous silicon substrate and a carbon coating layer. The preparation method of the material comprises preparing a porous silicon substrate and a carbon coating layer. The silicon-carbon composite anode material for lithium ion batteries has the advantages of high reversible capacity, good cycle performance and good rate performance. The material respectively shows reversible capacities of 1,556 mAh, 1,290 mAh, 877 mAh and 474 mAh/g at 0.2 C, 1 C, 4 C and 15 C rates; the specific capacity remains above 1,500 mAh after 40 cycles at the rate of 0.2 C and the reversible capacity retention rate is up to 90 percent.

    摘要翻译： 本发明公开了一种锂离子电池用碳 - 碳复合负极材料及其制备方法。该材料由多孔硅基材和碳涂层组成。 该材料的制备方法包括制备多孔硅衬底和碳涂层。 用于锂离子电池的硅碳复合阳极材料具有可逆容量大，循环性能好，速率性能好的优点。 该材料分别显示在0.2C，1C，4C和15C速率下1,556mAh，1,290mAh，877mAh和474mAh / g的可逆容量; 40次循环后的比容量以0.2C的比例保持在1500mAh以上，可逆容量保持率高达90％。