| 摘要 |
PROBLEM TO BE SOLVED: To improve flame retardancy and battery characteristics of a nonaqueous secondary battery.SOLUTION: This nonaqueous secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The nonaqueous electrolyte contains at least an annular nitrogen containing compound expressed by the following general formula (1)(in the formula, Ris selected from a halogen atom, a low-grade alkyl group, a low-grade alkenyl group, a low-grade alkoxy group, a low-grade alkoxycarbonyl group, a low-grade alkyl carbonyl group, and an aryl group, Ris selected from a hydrogen atom, a halogen atom, a low-grade alkyl group, a low-grade alkenyl group, a low-grade alkoxy group, a low-grade alkoxycarbonyl group, a low-grade alkyl carbonyl group, and an aryl group, or Rand Rare mutually combined and selected from a ring structure containing either one of a methylene group, a vinylene group, and a divalent linking group containing a complex atom.). |
