| abstract |
[PROBLEMS] To provide a non-aqueous electrolyte which has high flame retardancy, is safe, can generate a high voltage, and has excellent battery charge / discharge performance. A non-aqueous electrolytic solution comprising a non-aqueous solvent containing a phosphate compound represented by the following general formula [I] and an electrolyte. Embedded image In the formula, R 1 , R 2 and R 3 are an alkyl group having 1 to 4 carbon atoms or -R 4 groups containing an ether bond represented by -OR 5 (R 4 and R 5 is a hydrocarbon group having 1 to 10 carbon atoms), and at least one of R 1 to R 3 are, -R 4 -OR 5 And a group containing an ether bond represented by |