| abstract |
PROBLEM TO BE SOLVED: To provide an electrolyte having high solubility in an organic solvent, high withstand voltage and high electrical conductivity. A quaternary ammonium salt represented by the formula (1), an electrolytic solution containing the quaternary ammonium salt, and an electrochemical device using the electrolytic solution. (Wherein R 1 represents a linear or branched alkyl group having 1 to 4 carbon atoms, and R 2 to R 4 represent a linear or branched alkyl group having 1 to 4 carbon atoms. R 2 , Any two groups of R 3 and R 4 may form a ring. X − represents PF 6 — .) [Selection figure] None |