| abstract |
An electrolyte capable of improving battery characteristics even at high temperatures and a battery using the same are provided. A separator is impregnated with an electrolytic solution containing a solvent and an electrolytic salt, and the solvent contains at least one compound represented by the following formula. As a result, the decomposition reaction of the electrolytic solution is suppressed even in a high temperature environment, and excellent characteristics can be obtained even when left under a high temperature condition. [Wherein R 1, R 2, R 3 and R 4 represent a hydrogen group, a methyl group or an ethyl group, and X, Y and Z represent sulfur (S) or oxygen (O). However, when all of X, Y, and Z are sulfur (S) (X = Y = Z = S) and when all of X, Y, and Z are oxygen (O) (X = Y = Z = O) )except for. ] [Selection figure] None |