发明申请
- 专利标题： LITHIUM ION SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, BATTERY PACK, ELECTRIC VEHICLE, ELECTRICITY STORAGE SYSTEM, POWER TOOL, AND ELECTRONIC APPARATUS
- 专利标题（中）： 锂离子二次电池，锂离子二次电池负极，电池组，电动车，电力储存系统，电动工具及电子设备
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申请号： US13527284申请日： 2012-06-19
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公开(公告)号： US20120328945A1公开(公告)日： 2012-12-27
- 发明人: Takakazu Hirose , Takashi Fujinaga , Isao Koizumi , Norihiro Shimoi , Kenichi Kawase
- 申请人： Takakazu Hirose , Takashi Fujinaga , Isao Koizumi , Norihiro Shimoi , Kenichi Kawase
- 申请人地址： JP Tokyo
- 专利权人： SONY CORPORATION
- 当前专利权人： SONY CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2011-141002 20110624
- 主分类号： H01M4/48
- IPC分类号： H01M4/48 ; H01M4/56 ; H01M4/50 ; H01M4/52 ; H01M4/485
摘要：
A lithium ion secondary battery is provided with a positive electrode, a negative electrode containing an active material, and an electrolytic solution, wherein the active material includes a core portion capable of occluding and releasing lithium ions, an amorphous or low-crystalline coating portion disposed on at least a part of the surface of the core portion, and a fibrous carbon portion disposed on at least a part of the surface of the coating portion, and the coating portion contains Si and O as constituent elements, while the atomic ratio y (O/Si) of O relative to Si satisfies 0.5≦y≦1.8.
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