| abstract |
An electrolyte solution which is characterized in that a hetero element-containing organic solvent that contains a chain carbonate represented by general formula (1) is contained therein at a molar ratio of 1.5 or less relative to a metal salt that contains an alkali metal, an alkaline earth metal or aluminum as a cation, while containing a chemical structure represented by general formula (2) as an anion.nR 10 OCOOR 11 General formula (1)n(R 21 X 21 )(R 22 SO 2 )N General formula (2) |