| 摘要 |
A nonaqueous secondary battery includes a negative electrode using a negative electrode active material containing a carbonaceous material; a positive electrode using a positive electrode active material capable of reversibly intercalating and deintercalating lithium; and a nonaqueous electrolyte. The nonaqueous electrolyte contains: (1) a vinyl ethylene carbonate derivative represented by Formula (I): wherein R1 to R6 independently represent a hydrogen atom or an alkyl group having a carbon number of 1 to 4; (2) a cyclic acid anhydride; and (3) at least one cyclic ether derivative selected from the group consisting of 1,3-dioxanes, 1,3-dioxolanes and derivatives thereof. Accordingly, a nonaqueous secondary battery can be obtained which is excellent in charging load property and cycle property at room temperature and at high temperatures and in which even when the battery is preserved in a charged state in a high temperature atmosphere, not only remaining capacity is large, but also the amount of generated gas is small.
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