| 摘要 |
Provided is a non-aqueous electrolyte for a lithium secondary battery, which causes no decomposition during repeated charge/discharge cycles, and imparts improved charge/discharge characteristics and cycle life characteristics to a battery. The non-aqueous electrolyte for a lithium secondary battery comprises: an organic solvent containing a lithium salt; and a mixture of at least one succinic anhydride derivative represented by the following formula 1 or 2 with trimethylsilyl borate represented by the following formula 3. In formulae 1-3, R_1, R_2, R_3 and R_4 are the same or different, and each represents a halogen atom, a halogen-substituted or non-substituted C1-C10 alkyl group, alkenyl group or alkoxy group. |
