| abstract |
The present invention provides an organic electrolyte solution comprising a non-aqueous solvent and a lithium salt, wherein the organic electrolyte solution comprises at least one selected from a compound of Formula 1 and a compound of Formulas 2 to 5. By using the organic electrolytic solution of the present invention, the swelling of the battery is effectively suppressed even after the regeneration at normal temperature, after standard charging, after high temperature standing, and after repeated charging and discharging. A battery can be obtained.n n n [Formula 1]n n n n n n n n [Formula 2]n n n n n n n n [Formula 3]n n n n n n n n In said formula, R < 1> is a C1-C10 alkoxy group,n n n [Formula 4]n n n n n n n n Wherein R 2 and R 3 are each independently an unsubstituted or substituted alkyl group having 1 to 5 carbon atoms,n n n [Formula 5]n n n n n n n n In said formula, n is an integer of 1-6. |