Abstract:
A nonaqueous electrolyte solution for a secondary battery, including an electrolyte, a solvent and an additive, and a nonaqueous electrolyte secondary battery including the nonaqueous electrolyte solution. The additive contains a compound represented by the following formula (I): wherein n represents an integer of 1 to 4, in the case of n=1, R1 represents a halogen atom or the like, in the case of n=2, R1 represents an alkaline earth metal atom or the like, in the case of n=3, R1 represents a trivalent transition metal atom or the like, in the case of n=4, R1 represents a tetravalent transition metal atom or the like, and R2 represents an alkylene group of 1 to 6 carbon atoms or an alkenylene group of 2 to 6 carbon atoms.