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US07767343B2 Nonaqueous electrolyte secondary battery using lithium cobalt oxide as a positive active material and a nonaqueous electrolyte containing a sulfonyl-containing compound 有权
使用钴酸锂作为正极活性物质的非水电解质二次电池和含有磺酰基的化合物的非水电解质

Nonaqueous electrolyte secondary battery using lithium cobalt oxide as a positive active material and a nonaqueous electrolyte containing a sulfonyl-containing compound
摘要：
A nonaqueous electrolyte secondary battery including a negative electrode containing a graphite material as the negative active material, a positive electrode containing lithium cobalt oxide as a main component of the positive active material and a nonaqueous electrolyte solution, the battery being characterized in that the lithium cobalt oxide contains a group IVA element and a group IIA element of the periodic table, the nonaqueous electrolyte solution contains 0.2-1.5% by weight of a sulfonyl-containing compound and preferably further contains 0.5-4% by weight of vinylene carbonate.
摘要（中）：

包含含有作为负极活性物质的石墨材料的负极，含有钴酸锂作为正极活性物质的主要成分的正极和非水电解液的非水电解质二次电池，其特征在于，所述锂钴 氧化物含有元素周期表IVA族元素和IIA族元素，非水电解质溶液含有0.2-1.5重量％的含磺酰基化合物，优选还含有0.5-4重量％的碳酸亚乙烯酯。

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