- 专利标题： Negative electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
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申请号： US14762961申请日： 2014-01-10
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公开(公告)号： US09711783B2公开(公告)日： 2017-07-18
- 发明人: Kazuto Fukuda , Ayano Toyoda , Shouichiro Sawa , Taizou Sunano
- 申请人： SANYO Electric Co., Ltd. , Panasonic Corporation
- 申请人地址： JP Daito-shi JP Kadoma-shi
- 专利权人： SANYO Electric Co., Ltd.,PANASONIC Corporation
- 当前专利权人： SANYO Electric Co., Ltd.,PANASONIC Corporation
- 当前专利权人地址： JP Daito-shi JP Kadoma-shi
- 代理机构： Westerman, Hattori, Daniels & Adrian, LLP
- 优先权： JP2013-016082 20130130; JP2013-059362 20130322
- 国际申请： PCT/JP2014/000080 WO 20140110
- 国际公布： WO2014/119229 WO 20140807
- 主分类号： H01M4/02
- IPC分类号： H01M4/02 ; H01M4/134 ; H01M4/38 ; H01M4/62 ; H01M10/052
摘要：
A negative electrode for a nonaqueous electrolyte secondary battery according to one aspect of the present invention includes a negative electrode mixture layer that contains a binder and a negative electrode active material particle that forms an alloy with lithium and is formed on a current collector. The negative electrode mixture layer includes a base portion near the current collector and pillar-shaped portions formed on the base portion. A negative electrode for a nonaqueous electrolyte secondary battery according to another aspect of the present invention includes a negative electrode mixture layer that contains a binder and a negative electrode active material particle that forms an alloy with lithium and is formed on a current collector. The negative electrode mixture layer includes pillar-shaped portions and the particle diameter of the negative electrode active material particle is 20% or less of the maximum diameter of the pillar-shaped portions.
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