发明申请
US20160049651A1 NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
非电解电解质二次电池和非电解电解质二次电池负极

  • 专利标题: NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
  • 专利标题(中): 非电解电解质二次电池和非电解电解质二次电池负极
  • 申请号: US14779824
    申请日: 2014-03-18
  • 公开(公告)号: US20160049651A1
    公开(公告)日: 2016-02-18
  • 发明人: Shouichiro SawaAyano ToyodaTaizou Sunano
  • 申请人: SANYO ELECTRIC CO., LTD.
  • 申请人地址: JP Daito-shi, Osaka
  • 专利权人: SANYO ELECTRIC CO., LTD.
  • 当前专利权人: SANYO ELECTRIC CO., LTD.
  • 当前专利权人地址: JP Daito-shi, Osaka
  • 优先权: JP2013-065100 20130326
  • 国际申请: PCT/JP2014/001535 WO 20140318
  • 主分类号: H01M4/38
  • IPC分类号: H01M4/38 H01M10/052
NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
摘要:
A nonaqueous electrolyte secondary battery which has a good capacity retention ratio (cycle characteristics) and in which the expansion and shrinkage during charging and discharging are small compared with the case where a negative electrode made of only a negative electrode active material that forms an alloy with lithium is used. A negative electrode for a nonaqueous electrolyte secondary battery according to one aspect of the present invention includes a negative electrode mixture layer formed on a current collector and containing a binder and a negative electrode active material particle that forms an alloy with lithium. The negative electrode mixture layer includes pillar portions, and a value of S1/S2 is 0.46 or more and 0.58 or less, where S1 represents a total area of the pillar portions in plan view and S2 represents a total area of one surface of the negative electrode current collector in plan view.
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