发明申请
- 专利标题: SECONDARY BATTERY AND ANODE
- 专利标题(中): 二次电池和阳极
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申请号: US12616633申请日: 2009-11-11
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公开(公告)号: US20100124706A1公开(公告)日: 2010-05-20
- 发明人: Takakazu Hirose , Kenichi Kawase , Kazunori Noguchi , Takayuki Fujii
- 申请人: Takakazu Hirose , Kenichi Kawase , Kazunori Noguchi , Takayuki Fujii
- 申请人地址: JP Tokyo
- 专利权人: SONY CORPORATION
- 当前专利权人: SONY CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2008-291849 20081114
- 主分类号: H01M6/16
- IPC分类号: H01M6/16 ; H01M4/58 ; H01M4/42 ; H01M6/04
摘要:
A secondary battery capable of obtaining superior cycle characteristics and superior swollenness characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. An anode active material layer contains a crystalline anode active material having silicon as an element. The anode active material layer has a coating section where the surface of an anode current collector is coated with the anode active material and a non-coating section where the surface of the anode current collector is not coated with the anode active material but is exposed. Thereby, the physical property of the anode active material is hardly deteriorated with age. Further, at the time of charge and discharge, the anode active material layer is hardly expanded and shrunk, and thus the anode current collector is hardly deformed.