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

摘要

The present invention relates to a non-aqueous electrolyte solution including a non-aqueous organic solvent and lithium salts, and specifically, to a non-aqueous electrolyte solution which further comprises 0.5-10 wt% of adiponitrile based on the weight of the non-aqueous electrolyte solution, 0.1-10 wt% of lithium difluoro oxalate borate based on the weight of the non-aqueous electrolyte solution, and 0.5-10 wt% of the compound represented by chemical formula 1 based on the weight of the non-aqueous electrolyte solution. According to the present invention, a lithium secondary battery having an improved cycle performance can be manufactured by including the non-aqueous electrolyte solution.