发明申请
US20120164530A1 NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
用于非水电解质二次电池的负极,其制造方法和非电解电解质二次电池

  • 专利标题: NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
  • 专利标题(中): 用于非水电解质二次电池的负极,其制造方法和非电解电解质二次电池
  • 申请号: US13394499
    申请日: 2011-02-25
  • 公开(公告)号: US20120164530A1
    公开(公告)日: 2012-06-28
  • 发明人: Hiroshi TemmyoMasatoshi Nagayama
  • 申请人: Hiroshi TemmyoMasatoshi Nagayama
  • 优先权: JP2010-149119 20100630
  • 国际申请: PCT/JP2011/001113 WO 20110225
  • 主分类号: H01M4/64
  • IPC分类号: H01M4/64 H01M4/82
NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
摘要:
An object of the invention is to provide a negative electrode capable of improving the large current characteristics of a nonaqueous electrolyte secondary battery while maintaining the battery capacity. A negative electrode includes a sheet-like current collector and a negative electrode mixture layer disposed on a surface of the current collector. The negative electrode mixture layer includes graphite particles and ceramic particles interposed between the graphite particles. The mean particle size of the ceramic particles is smaller than that of the graphite particles. In an X-ray diffraction pattern of the negative electrode mixture layer, the ratio R of the intensity I110 of a peak attributed to a (110) plane of the graphite particles to the intensity I002 of a peak attributed to a (002) plane, i.e., the ratio I110/I002, is 0.05 or more. The negative electrode mixture layer has a density of 1.1 to 1.8 g/cm3.
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