abstract |
The organic electrolyte solution according to the present invention includes a lithium salt and an organic solvent containing a high dielectric constant solvent and a low boiling point solvent, and further include a phosphine oxide compound represented by the following Chemical Formula 1 as an additive.n n n <Formula 1>n n n n n n n n Wheren n n R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , l and n are as defined below.n n n The organic electrolytic solution of the present invention and a lithium battery employing the same exhibit excellent flame retardancy and excellent charge / discharge characteristics by using a phosphine oxide compound, thereby improving stability, reliability, and charge / discharge efficiency of the battery. |