| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery that has excellent overcharge safety and can secure storage reliability because gas hardly occurs at high temperature storage. <P>SOLUTION: In the nonaqueous secondary battery, comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte solution, the nonaqueous electrolyte solution contains a compound A in which a halogen group is bonded to a benzene ring, and an aromatic and/or heterocyclic compound B which is oxidized at a lower potential than that of this compound A, and the content of the compound A with respect to the whole nonaqueous electrolyte solution is not less than 1 mass% nor more than 15 mass% and the content of the compound B is not less than 0.005 mass% nor more than 3 mass%. <P>COPYRIGHT: (C)2003,JPO |
