ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

摘要

The present invention provides electrolyte for a lithium secondary battery containing 10-90 wt% of an ester-based solvent and 10-90 wt% of a carbonate-based solvent based on a total weight of a non-water based solvent, and the lithium secondary battery comprising the same. The ester-based solvent contains one or more compounds selected from a group consisting of methyl acetate, ethyl acetate, propyl acetate, methyl propionate (MP), ethyl propionate (EP), γ-butyrolactone, γ-valerolactone, γ-carprolactone, δ-valerolactone, and ε-carprolactone.