发明名称 |
LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME |
摘要 |
Provided is a lithium secondary battery in which negative-electrode active material particles containing silicon and/or a silicon alloy are used and which prevents the occurrence of breakage of a binder itself and peel-off of the binder at the interfaces with the negative-electrode active material and the negative-electrode current collector and has a high energy density and an excellent cycle characteristic. The lithium secondary battery includes: a negative electrode in which a negative-electrode active material layer including negative-electrode active material particles containing silicon and/or a silicon alloy and a binder is formed on a surface of electrically conductive metal foil serving as a negative-electrode current collector; a positive electrode; and a nonaqueous electrolyte, wherein the binder contains a polyimide resin including a crosslinked structure formed by imidization of a hexavalent or higher-valent carboxylic acid or an anhydride thereof with a diamine. |
申请公布号 |
EP2555288(A4) |
申请公布日期 |
2013.08.07 |
申请号 |
EP20110759525 |
申请日期 |
2011.03.24 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
FUKUI, ATSUSHI;SUNANO, TAIZOU;KAMINO, MARUO |
分类号 |
H01M4/62;H01M4/134;H01M4/1395;H01M10/052;H01M10/058 |
主分类号 |
H01M4/62 |
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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