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    FINE PARTICLE-EXFOLIATED GRAPHITE COMPOSITE, NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, AND METHODS FOR PRODUCING THE SAME, AND LITHIUM ION SECONDARY BATTERY
    2.
    发明申请
    FINE PARTICLE-EXFOLIATED GRAPHITE COMPOSITE, NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, AND METHODS FOR PRODUCING THE SAME, AND LITHIUM ION SECONDARY BATTERY 有权
    用于锂离子二次电池的微粒 - 异形石墨复合材料，负极电极材料及其制造方法和锂离子二次电池

    公开(公告)号：US20150270534A1

    公开(公告)日：2015-09-24

    申请号：US14433842

    申请日：2014-02-25

    申请人： SEKISUI CHEMICAL CO., LTD.

    发明人： Shoji Nozato ,  Akira Nakasuga ,  Akihiko Fujiwara ,  Hiroshi Yoshitani ,  Yasushi Uematsu ,  Shotaro Kobaru

    IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M4/587 ,  H01M4/133

    CPC分类号： H01M4/364 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/38 ,  H01M4/386 ,  H01M4/587 ,  H01M4/622 ,  H01M4/623 ,  H01M4/624 ,  H01M4/625 ,  H01M2004/027

    摘要： There is provided a method for producing a negative electrode material for lithium ion secondary batteries that is easily produced and is less likely to cause deterioration in charge and discharge cycle characteristics. A method for producing a negative electrode material for lithium ion secondary batteries, comprises steps of heating a raw material composition comprising resin-retained partially exfoliated graphite having a structure in which graphene is partially exfoliated and Si particles to dope the partially exfoliated graphite with the Si particles, the partially exfoliated graphite being obtained by pyrolyzing a resin in a composition in which the resin is fixed to graphite or primary exfoliated graphite, thereby exfoliating the graphite or primary exfoliated graphite while allowing part of the above resin to remain; providing a composition comprising the above partially exfoliated graphite doped with the Si particles, a binder resin, and a solvent; and shaping the above composition.

    摘要翻译： 提供一种易于制造并且不太可能导致充放电循环特性劣化的锂离子二次电池用负极材料的制造方法。 一种锂离子二次电池用负极材料的制造方法，其特征在于，包括：将具有石墨烯部分剥离的结构的树脂保留部分剥离石墨和Si粒子加热至部分脱落石墨与Si 颗粒，通过将树脂固定在石墨或初级剥离石墨上的组合物中热解树脂得到的部分剥离石墨，从而使石墨或初级剥离石墨脱落，同时允许保留上述树脂的一部分; 提供包含掺杂有Si颗粒的上述部分剥离的石墨，粘合剂树脂和溶剂的组合物; 并成型上述组合物。