| abstract |
(57) [Problem] To provide an electrolyte for a lithium secondary battery capable of suppressing generation of gas inside a battery due to decomposition of a carbonate-based organic solvent during initial charging. SOLUTION: An electrolyte for a lithium secondary battery containing a non-aqueous organic solvent and at least one or more sulfone-based organic compounds selected from the group consisting of compounds represented by the following general formulas (I) to (III): . Embedded image (Wherein, R and R ′ are a tertiary alkyl group, alkenyl group, aryl group or substituted primary to tertiary alkyl group, alkenyl group or aryl group, and R and R ′ are each other (Same or different) (Wherein n is 0 to 3) |