发明授权
- 专利标题: Non-aqueous electrolyte secondary battery and method of producing coating for negative electrode active material thereof
- 专利标题(中): 非水电解质二次电池及其负极活性物质用涂料的制造方法
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申请号: US12579862申请日: 2009-10-15
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公开(公告)号: US07967874B2公开(公告)日: 2011-06-28
- 发明人: Tetsuo Nanno , Tomohiro Ueda
- 申请人: Tetsuo Nanno , Tomohiro Ueda
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2005-045031 20050222
- 主分类号: H01M6/00
- IPC分类号: H01M6/00
摘要:
A non-aqueous electrolyte secondary battery having a positive electrode and a negative electrode with an active material capable of absorbing and desorbing lithium, a separator interposed between the positive and negative electrodes, and a non-aqueous electrolyte. The negative electrode active material is covered by a coating having elasticity. The fully elastic coating expands and contracts following the volume change of the negative electrode active material; thus, the coating brings out its desired functions without being damaged or broken. Regardless of the degree of the volume change of the negative electrode active material, a lasting coating without damage is formed on the negative electrode active material, to improve performances of the non-aqueous electrolyte secondary battery.
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