| 摘要 |
PURPOSE: Provided are an electrolyte for lithium secondary battery which is safe when being overcharged, and has excellent electrochemical property such as high temperature property and life property, and a lithium secondary battery comprising the same. CONSTITUTION: The electrolyte comprises a nonaqueous organic solvent, a lithium salt, and an electrolyte additive, wherein the electrolyte additive is a compound represented by formula 1(wherein each of R1 and R2 is hydrogen, C1-C10 alkyl group, alkoxy group, C6-C10 aryl group, or halogen, n is an integer of 0-6, and m is an integer of 0-6). The compound of formula 1 is 2,3-diphenyl maleic anhydride. The electrolyte comprises 0.1-10 wt% of the compound of formula 1(the wt% is based on weight of the electrolyte). |
