An electrolyte solution including a solvent, an electrolyte salt, and at least one compound (α) selected from an amine (A) represented by the formula (A): (wherein R1 and R2 may be the same as or different from each other, and individually represent a C1-C7 alkyl group; Rf1 represents a C1-C7 fluorinated alkyl group), and an amide (B) represented by the formula (B): (wherein R3, R4, and R5 may be the same as or different from each other, and individually represent a C1-C7 alkyl group). The amount of the compound (α) is 0.001 to 20 ppm in the electrolyte solution.