发明授权
- 专利标题: Electrode structure for lithium secondary battery and secondary battery having such electrode structure
- 专利标题(中): 具有这种电极结构的锂二次电池和二次电池的电极结构
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申请号: US11296460申请日: 2005-12-08
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公开(公告)号: US07615314B2公开(公告)日: 2009-11-10
- 发明人: Soichiro Kawakami , Akira Morita , Takao Ogura
- 申请人: Soichiro Kawakami , Akira Morita , Takao Ogura
- 申请人地址: JP Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Fitzpatrick, Cella, Harper & Scinto
- 优先权: JP2004-358458 20041210
- 主分类号: H01M4/58
- IPC分类号: H01M4/58 ; H01M4/62
摘要:
An electrode structure for a lithium secondary battery including: a main active material layer including a metal powder selected from silicon, tin and an alloy thereof that can store and discharge lithium by electrochemical reaction, and a binder of an organic polymer; and a current collector. The main active material layer includes a powder of a support material for supporting the electron conduction of the main active material layer in addition to the metal powder and the powder of the support material are particles having a spherical, pseudo-spherical or pillar shape with an average particle size of 0.3 to 1.35 times the thickness of the main active material layer. The support material is one or more selected from graphite, oxides of transition metals and metals that do not electrochemically form alloy with lithium. Organic polymer compounded with a conductive polymer is used for the binder.
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