发明名称 |
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY |
摘要 |
A nonaqueous electrolyte secondary battery comprising a negative electrode constituted of a carbonaceous material permitting reversible insertion and desorption of lithium, a positive electrode permitting reversible insertion and desorption of lithium, a separator separating these positive electrode and negative electrode from each other and a nonaqueous electrolyte composed of an organic solvent and, dissolved therein, a solute of lithium salt, wherein the nonaqueous electrolyte contains vinylene carbonate and di(2-propynyl) oxalate, these vinylene carbonate and di(2-propynyl) oxalate added in an amount of 0.1 to 3.0% by mass and 0.1 to 2.0% by mass, respectively, based on the mass of the nonaqueous electrolyte. Thus, there can be provided a nonaqueous electrolyte secondary battery wherein a stable SEI surface coating is formed to thereby exhibit a large initial capacity and excel in cycle characteristics at high temperature and wherein any cell swelling is slight. |
申请公布号 |
WO2005064735(A1) |
申请公布日期 |
2005.07.14 |
申请号 |
WO2004JP19328 |
申请日期 |
2004.12.24 |
申请人 |
SANYO ELECTRIC CO., LTD.;IWANAGA, MASATO;INOMATA, HIDEYUKI;OOGA, KEISUKE;ABE, KOJI;MIYOSHI, KAZUHIRO |
发明人 |
IWANAGA, MASATO;INOMATA, HIDEYUKI;OOGA, KEISUKE;ABE, KOJI;MIYOSHI, KAZUHIRO |
分类号 |
H01M2/02;H01M4/133;H01M10/05;H01M10/0525;H01M10/0567;H01M10/0569 |
主分类号 |
H01M2/02 |
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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