| 摘要 |
The present invention provides a non-aqueous electrolyte comprising: a non-aqueous organic solvent comprising propylene carbonate (PC) and an ester-based solvent; and lithium bis(fluorosulfonyl)imide (LiFSI), and a lithium secondary battery comprising the same. According to the non-aqueous electrolyte of the present invention, the lithium secondary battery comprising the same forms a firm SEI film at a negative electrode at the time of initial charging, and is thereby not only capable of improving low-temperature, room-temperature, and high-temperature output characteristics, but also capable of enhancing both a high-temperature cycle characteristic and a capacity characteristic after high-temperature storage. |
