Patent ID: 7494745

Claim:
An organic electrolytic solution comprising: a lithium salt; an organic solvent containing a high dielectric constant solvent and a low boiling point solvent; and a compound represented by formula (1): where each of R 1 , R 2 , R 3 and R 4 is independently a hydrogen atom, a halogen atom, a hydroxy group, a substituted or unsubstituted C 1-20 alkyl group, a substituted or unsubstituted C 1-20 alkoxy group, a substituted or unsubstituted C 2-20 alkenyl group, a substituted or unsubstituted C 6-30 aryl group, a substituted or unsubstituted C 6-30 aryloxy group, a substituted or unsubstituted C 2-30 heteroaryl group, or a substituted or unsubstituted C 2-30 heteroaryloxy group; and n is an integer between 1 and 4.