发明名称 |
Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery comprising the same |
摘要 |
A negative electrode containing an alloying material and a graphite material for providing a non-aqueous electrolyte secondary battery with a high capacity and excellent cycle characteristics. The negative electrode includes graphite and an alloying material capable of electrochemically absorbing and desorbing Li. The alloying material includes an A phase composed mainly of Si and a B phase including an intermetallic compound of a transition metal element and Si. The A phase and/or the B phase include a microcrystalline or amorphous region. The weight percentage of the A phase relative to the total weight of the A phase and the B phase is greater than 40% and not greater than 95%. The weight percentage of the graphite relative to the total weight of the alloying material and the graphite is not less than 50% and not greater than 95%.
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申请公布号 |
US2006105242(A1) |
申请公布日期 |
2006.05.18 |
申请号 |
US20050119208 |
申请日期 |
2005.05.02 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SATO TOSHITADA;HASEGAWA MASAKI;YAMAMOTO TERUAKI;BITO YASUHIKO |
分类号 |
H01M4/13;H01M4/58;H01M4/587;H01M10/052;H01M10/36 |
主分类号 |
H01M4/13 |
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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