发明授权
- 专利标题: Electrode material for non-aqueous solvent secondary cell, electrode and secondary cell
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申请号: US10258169申请日: 2002-02-20
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公开(公告)号: US07147970B2公开(公告)日: 2006-12-12
- 发明人: Minoru Ishikawa , Kazuhiko Shimizu , Takashi Wakahoi , Shuji Morinishi , Naohiro Sonobe , Akio Hoshi
- 申请人: Minoru Ishikawa , Kazuhiko Shimizu , Takashi Wakahoi , Shuji Morinishi , Naohiro Sonobe , Akio Hoshi
- 申请人地址: JP Tokyo
- 专利权人: Kureha Corporation
- 当前专利权人: Kureha Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2001-047062 20010222
- 国际申请: PCT/JP02/01461 WO 20020220
- 国际公布: WO02/067348 WO 20020829
- 主分类号: H01M4/48
- IPC分类号: H01M4/48
摘要:
An electrode material comprising a powdery mixture of a metal material (particularly, an intermetallic compound) and a capacitive carbon material each capable of doping and dedoping lithium, and an optionally added fine electroconductive additive, and containing the metal material and the capacitive carbon material in amounts of 5–60 wt. % and 40–95 wt. %, respectively, is used as an active substance for an electrode, particularly a negative electrode, of a non-aqueous solvent secondary cell. As a result, there is provided a non-aqueous solvent secondary cell which has large charge-discharge capacities, a small irreversible capacity determined as a difference between the doping capacity and the de-doping capacity, and also excellent cycle characteristics.
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