发明申请
- 专利标题： ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING THE SAME
- 专利标题（中）： 非水电解二次电池电极和非水电解质二次电池，包括它们
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申请号： US13257549申请日： 2011-03-03
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公开(公告)号： US20120009475A1公开(公告)日： 2012-01-12
- 发明人: Kensuke Nakura
- 申请人： Kensuke Nakura
- 优先权： JP2010-057848 20100315
- 国际申请： PCT/JP2011/001263 WO 20110303
- 主分类号： H01M4/131
- IPC分类号： H01M4/131
摘要：
An electrode for a non-aqueous electrolyte secondary battery includes a sheet-like current collector and an active material layer including a first layer and a second layer which are adhering to a surface of the current collector in this order. The first layer includes a carbon material that absorbs or releases lithium ions reversibly at a first potential, while the second layer includes a transition metal oxide that absorbs or releases lithium ions reversibly at a second potential higher than the first potential. The difference between the first potential and the second potential is 0.1 V or more, and the ratio of the thickness T1 of the first layer to the thickness T2 of the second layer, i.e., the ratio T1/T2, is from 0.33 to 75.