发明申请
- 专利标题: NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY CELL AND METHOD FOR MANUFACTURING SAME
- 专利标题(中): 用于锂离子二次电池的负电极及其制造方法
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申请号: US14439063申请日: 2013-10-23
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公开(公告)号: US20150311526A1公开(公告)日: 2015-10-29
- 发明人: Kouichi Izuhara , Makoto Daifuku , Yasushi Miyata
- 申请人: SANGO Co., Ltd. , CITY OF NAGOYA
- 申请人地址: JP Miyoshi-shi, Aichi JP Nagoya-shi, Aichi
- 专利权人: SANGO Co., Ltd.,CITY OF NAGOYA
- 当前专利权人: SANGO Co., Ltd.,CITY OF NAGOYA
- 当前专利权人地址: JP Miyoshi-shi, Aichi JP Nagoya-shi, Aichi
- 优先权: JP2012-238289 20121029
- 国际申请: PCT/JP2013/078737 WO 20131023
- 主分类号: H01M4/587
- IPC分类号: H01M4/587 ; H01M4/04 ; H01M10/0525 ; H01M4/36 ; H01M4/66
摘要:
A negative electrode for a lithium-ion secondary cell is configured in a novel manner, having a charge-discharge capacity, as determined per unit weight of the carbon used in the electrode, that is markedly higher than the theoretical capacity of graphite, and having a surface that is stabilized against repeated charging and discharging. A negative electrode for a lithium-ion secondary cell in which a carbon layer obtained by building up and growing a graphene sheet is formed on the surface of a substrate comprising an iron-based metal, the carbon layer being formed in a diagonal direction in relation to the substrate, and the carbon layer being used as the surface of the negative electrode. As measured using an argon laser having a wavelength of 532 nm, the Raman spectrum of the graphite that constitutes the carbon nanochip layer has a g/d ratio of 0.30-0.80.
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