| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery superior in charge and discharge cycle characteristics and having a high level of current cut-off performance when being overcharged.SOLUTION: A nonaqueous electrolyte secondary battery according to the present invention comprises: a positive electrode; a negative electrode; a nonaqueous electrolyte including a gas-generating additive agent; and a pressure-type current cutoff mechanism. The gas-generating additive agent contains cyclohexylbenzene, and at least one kind of terphenyl selected from a group consisting of ortho-terphenyl and meta-terphenyl. The gas-generating additive agent includes 0.5-2.0 pts.mass of the terphenyl to 2.0 pts.mass of the cyclohexylbenzene. |
