NON-AQUEOUS ELECTROLYTIC SOLUTION, AND NON-AQUEOUS ELECTROLYTE BATTERY COMPRISING SAME

A nonaqueous electrolytic solution comprising a lithium salt and a nonaqueous organic solvent, wherein the nonaqueous organic solvent comprises: at least one member selected from the group consisting of saturated cyclic carbonates, linear carbonates, and aliphatic carboxylic acid esters, in a total proportion exceeding 90% by volume; and a fluorine-substituted aromatic ester compound represented by the following general formula (1) in an amount of 0.01-10% by weight based on the weight of the whole nonaqueous electrolytic solution; and a nonaqueous-electrolyte battery including the nonaqueous electrolytic solution. Xn-Ph-OCOR(1) [In general formula (1), Ph is phenylene, and R is a hydrocarbon group which has 1-12 carbon atoms and may have been substituted with a fluorine atom. X is a fluorine atom or a fluorine-substituted alkyl group having 1-12 carbon atoms, and n is an integer of 1-4.] Furthermore disclosed are: a nonaqueous electrolytic solution which comprises an electrolyte, a nonaqueous solvent and a compound represented by general formula (3); and a nonaqueous-electrolyte battery including the nonaqueous electrolytic solution. [In general formula (3), R 1 represents a hydrocarbon group which has 1-12 carbon atoms and may have been substituted with a fluorine atom, and R 2 to R 6 each independently represent a hydrogen atom, a fluorine atom, or an alkyl group which has 1-12 carbon atoms and may have been substituted with a fluorine atom, at least one of R 2 to R 6 representing an alkyl group which has 2 or more carbon atoms and may have been substituted with a fluorine atom. Symbol n represents an integer of 0 or 1. When n is 1, at least one of R 2 to R 6 represents an alkyl group which has 5 or more carbon atoms and may have been substituted with a fluorine atom.]