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    Non-aqueous electrolyte secondary battery
    4.
    发明申请
    Non-aqueous electrolyte secondary battery 审中-公开
    非水电解质二次电池

    公开(公告)号：US20070148550A1

    公开(公告)日：2007-06-28

    申请号：US11645805

    申请日：2006-12-27

    申请人： Kazuhiro Hasegawa ,  Yasufumi Takahashi ,  Shingo Tode ,  Akira Kinoshita ,  Tatsuyuki Kuwahara ,  Hiroyuki Fujimoto

    发明人： Kazuhiro Hasegawa ,  Yasufumi Takahashi ,  Shingo Tode ,  Akira Kinoshita ,  Tatsuyuki Kuwahara ,  Hiroyuki Fujimoto

    IPC分类号： H01M4/66 ,  H01M4/58

    CPC分类号： H01M10/0525 ,  H01M4/133 ,  H01M4/134 ,  H01M4/525 ,  H01M4/661 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2004/028

    摘要： Low-temperature charge-discharge performance is improved in a non-aqueous electrolyte secondary battery that employs flake graphite as a negative electrode active material. A non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material capable of intercalating and deintercalating lithium ions, a negative electrode containing a negative electrode active material capable of intercalating and deintercalating lithium ions, and a non-aqueous electrolyte. The negative electrode includes a mixture layer (1) containing, as the negative electrode active material, a graphite material having flake-shaped primary particles, a current collector (3) made of Cu or a Cu alloy, and an intermediate layer (2) disposed between the mixture layer (1) and the current collector (3) and composed of a material that intercalates and deintercalates lithium ions at a nobler potential than the graphite material.

    摘要翻译： 在采用片状石墨作为负极活性物质的非水电解质二次电池中，低温充放电性能得到改善。 非水电解质二次电池包括含有能够插入和脱嵌锂离子的正极活性物质的正极，含有能够插入和脱嵌锂离子的负极活性物质的负极和非水电解质。 负极包括含有作为负极活性物质的具有片状一次粒子的石墨材料，Cu或Cu合金制的集电体（3）和中间层（2）的混合层（1） 设置在混合物层（1）和集电体（3）之间，并且由比石墨材料更贵的电位插入和脱嵌锂离子的材料构成。