发明名称 |
LITHIUM SECONDARY BATTERY |
摘要 |
A lithium secondary battery obtained by the present invention has a negative electrode sheet 20 in which the theoretical capacities of the negative active material per unit area are equalized in a negative active material layer 24b on the outer circumference side and a negative active material layer 24a on the inner circumference side of a negative electrode collector 22, and at least one of the following conditions is met with respect to at least part of a bent section 85, which is bent toward the inside of a wound electrode body 80: (1) the percentage content of binder of the outer negative active material layer 24b is smaller than the percentage content of binder of the inner negative active material layer 24a; and (2) the density of the outer negative active material layer 24b is smaller than the density of the inner negative active material layer 24a. |
申请公布号 |
US2012258343(A1) |
申请公布日期 |
2012.10.11 |
申请号 |
US200913516259 |
申请日期 |
2009.12.17 |
申请人 |
TAKAHATA KOJI;SANO HIDEKI |
发明人 |
TAKAHATA KOJI;SANO HIDEKI |
分类号 |
H01M10/36;H01M4/04;H01M10/04 |
主分类号 |
H01M10/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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