NON-AQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

The present invention aims to provide a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery comprising same and thus having improved high-temperature durability. Specifically, the non-aqueous electrolyte solution for a lithium secondary battery may contain a lithium salt, a non-aqueous organic solvent, and a compound, represented by chemical formula 1, as an additive.