| 摘要 |
PURPOSE: Provided are an electrolyte for lithium secondary battery which is safe when being overcharged, and shows excellent electrochemical property, for example high temperature and life properties, and a lithium secondary battery containing the electrolyte. CONSTITUTION: The electrolyte contains a nonaqueous organic solvent, a lithium salt, and an electrolyte additive, wherein the electrolyte additive is a compound of formula 1. In the formula 1, R1 is C3-C10 cycloalkyl group or substituted cycloalkyl group, R2 is hydrogen, C1-C10 alkyl group, alkoxy group, C6-C10 aryl group, or halogen, m is an integer of 1-6, and n is an integer of 0-6. The compound of formula 1 is cyclohexyl benzene. The electrolyte contains 0.1-10 wt% of the compound of formula 1. |
