Abstract: This invention relates to a nonaqueous electrolytic solution containing an electrolyte, a nonaqueous solvent, and a compound represented by formula (3): wherein R1 represents an optionally fluorine-atom substituted hydrocarbon group having 1-12 carbon atoms; R2 to R6 each independently represent a hydrogen atom, a fluorine atom, or an optionally fluorine-atom substituted alkyl group having 1-12 carbon atoms, such that at least one of R2 to R6 represents an optionally fluorine-atom substituted alkyl group having 2 or more carbon atoms; and n represents an integer of 0 or 1, such that when n is 1, at least one of R2 to R6 represents an optionally fluorine-atom substituted alkyl group having 5 or more carbon atoms.

Abstract: This invention relates to a nonaqueous electrolytic solution including a lithium salt and an organic solvent containing: a carbonate and/or an ester in a total proportion exceeding 90% by volume; and a fluorine-substituted aromatic ester represented by formula (I) in an amount of 0.01%-10% by weight based on the weight of the electrolytic solution: Xn-Ph-OCOR??(1). The invention also relates to a nonaqueous electrolytic solution including an electrolyte, a nonaqueous solvent, and a compound represented by formula (3): The invention also relates to a nonaqueous-electrolyte battery including a nonaqueous electrolytic solution as described above.