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    • 43. 发明申请
    • ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND ANODE AND LITHIUM BATTERY CONTAINING THE MATERIAL
    • 阳极活性材料,其制备方法,以及包含材料的阳极和锂电池
    • US20100258761A1
    • 2010-10-14
    • US12818974
    • 2010-06-18
    • Gue-sung KimJin-hwan ParkYongnam Ham
    • Gue-sung KimJin-hwan ParkYongnam Ham
    • H01M4/88
    • H01M4/134H01M4/139H01M4/1393H01M4/1395H01M4/366H01M4/583H01M4/624H01M4/626H01M10/052H01M2004/027
    • An anode active material comprises metal core particles, metal nano wires formed on the metal core particles, pores between the metal core particles and the metal nano wires, and a carbon-based coating layer formed on a surface of the metal core particles and metal nano wires. In the anode active material according to the present invention, the metal core particles and metal nano wires are combined to form a single body, and a carbon-based coating layer is formed on the surface of the metal nano wires and metal core particles. Thus, volume changes in the pulverized metal core particles can be effectively buffered during charging and discharging, and the metal core particles are electrically connected through the metal nano wires. As a result, volume changes in the anode active material and degradation of the electrode can be prevented, thereby providing excellent initial charge/discharge efficiency and enhanced charge/discharge capacity.
    • 阳极活性材料包括金属芯颗粒,形成在金属芯颗粒上的金属纳米线,金属芯颗粒和金属纳米线之间的孔,以及形成在金属芯颗粒和金属纳米线表面上的碳基涂层 电线 在根据本发明的负极活性材料中,金属芯颗粒和金属纳米线组合形成单体,并且在金属纳米线和金属芯颗粒的表面上形成碳基涂层。 因此,可以在充放电期间有效地缓冲粉碎的金属芯颗粒的体积变化,并且金属芯颗粒通过金属纳米线电连接。 结果,可以防止阳极活性材料的体积变化和电极的劣化,从而提供优异的初始充电/放电效率和增强的充电/放电容量。