发明名称 |
LITHIUM SECONDARY BATTERY |
摘要 |
Charge-discharge cycle performance is improved in a lithium secondary battery that adopts a thin film made of silicon or a silicon alloy as its negative electrode active material and has a wound electrode structure. The lithium secondary battery includes: a negative electrode having a current collector and a thin film made of silicon or a silicon alloy as a negative electrode active material, the thin film provided on the current collector; a positive electrode; a separator; the positive and negative electrodes being overlapped with the separator interposed therebetween, and the positive and negative electrodes and the separator being wound around to form an electrode assembly; a non-aqueous electrolyte; and a battery case accommodating the electrode assembly. The ratio of theoretical capacity per unit area of the negative electrode to charge capacity per unit area of the positive electrode is within the range of from 1.9 to 4.4. |
申请公布号 |
KR20060076716(A) |
申请公布日期 |
2006.07.04 |
申请号 |
KR20050130520 |
申请日期 |
2005.12.27 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
YANAGIDA TOSHIO;MINAMI HIROSHI;SUNANO TAIZOU;KAMINO MARUO |
分类号 |
H01M4/02;H01M4/134;H01M4/1395;H01M4/38;H01M10/05;H01M10/052;H01M10/0587 |
主分类号 |
H01M4/02 |
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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