发明申请
- 专利标题: LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
- 专利标题(中): 锂二次电池及其制造方法
-
申请号: US11771552申请日: 2007-06-29
-
公开(公告)号: US20080124631A1公开(公告)日: 2008-05-29
- 发明人: Atsushi Fukui , Hiroshi Minami , Mariko Torimae , Yasuyuki Kusumoto
- 申请人: Atsushi Fukui , Hiroshi Minami , Mariko Torimae , Yasuyuki Kusumoto
- 申请人地址: JP Osaka
- 专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人地址: JP Osaka
- 优先权: JP2006-182019 20060630; JP2007-083624 20070328
- 主分类号: H01M4/62
- IPC分类号: H01M4/62 ; H01M10/36 ; B05D3/00
摘要:
A lithium secondary battery includes an electrode assembly having a positive electrode (1), a negative electrode (2) having a negative electrode current collector and a negative electrode active material layer formed on a surface of the negative electrode current collector and composed of a binder and negative electrode active material particles containing silicon and/or a silicon alloy, and a separator (3) interposed between the electrodes. The electrode assembly is impregnated with a non-aqueous electrolyte. The binder contains a polyimide resin represented by the following chemical formula (1): where R contains at least a benzene ring, and n is within the range of from 10 to 100,000, and the negative electrode active material particles have an average particle size of 5 μm or greater.