abstract |
The present invention relates to a non-aqueous electrolyte containing a non-aqueous organic solvent, a lithium salt, and an oligomer represented by Chemical Formula 1 described herein, and a lithium secondary battery containing the non-aqueous electrolyte. The non-aqueous electrolyte according to an embodiment of the present invention can reduce the gas such as CO or CO 2 generated inside the secondary battery during high temperature storage, thereby further improving the high temperature stability of the lithium secondary battery. be able to. |