| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrolytic solution capable of restraining the reduction decomposition reaction of a solvent even if highly crystalline carbon such as graphite is used for a negative electrode, of improving the service life of a battery and of imparting excellent charge-discharge efficiency, a load characteristic and a low-temperature characteristic by forming the electrolytic solution with a nonaqueous solvent containing a specific isocyanuric acid derivative and an electrolyte. SOLUTION: A nonaqueous solvent contains an isocyanuric acid derivative expressed by the formula I or formula II. In the formula I or formula II, R1-R3 may be the same or different, each being a 1-10C alkyl group, aryl group or a 1-20C organic group having a carbonyl group and/or an oxy group and/or a double bond. The formula I or formula II each are an isomer capable of being thermally isomerized. Preferably, in the case of this nonaqueous electrolytic solution, at least one of R1-R3 is a 1-10C hydrocarbon group that may contain at least one kind of group within an oxy group; oxo group, amide group and halogen in the compound expressed by the formula I or formula II. |
