发明申请
- 专利标题: NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING SAME
- 专利标题(中): 用于锂二次电池的负极及其制造方法
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申请号: US13504767申请日: 2010-11-10
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公开(公告)号: US20120214063A1公开(公告)日: 2012-08-23
- 发明人: Hideyuki Morimoto , Shin-ichi Tobishima
- 申请人: Hideyuki Morimoto , Shin-ichi Tobishima
- 申请人地址: JP Gunma
- 专利权人: NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
- 当前专利权人: NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
- 当前专利权人地址: JP Gunma
- 优先权: JP2009-260750 20091116
- 国际申请: PCT/JP2010/069966 WO 20101110
- 主分类号: H01M4/64
- IPC分类号: H01M4/64 ; H01M4/04
摘要:
A negative electrode for a lithium secondary battery, in which α-Fe2O3 that is low in cost, has little environmental impact and has high theoretical capacity is used as an active material, maintains high adhesiveness between a current collector and an electrode layer, and can simultaneously achieve both of an improvement in the cycle characteristics and high capacity. In a negative electrode for a lithium secondary battery, which is configured of a current collector, and an electrode layer that is formed on the current collector and contains at least a negative electrode active material, a conductive assistant and a binder component, the negative electrode active material is composed of α-Fe2O3 particles that generate a conversion electrode reaction, the binder component is a mixture of polyamide acid and partially imidized polyamide acid. The electrode layer is configured so that a concentration of the binder component decreases as distanced from the current collector.