NON-AQUEOUS ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery, which includes a lithium salt, an organic solvent, a compound represented by Formula 1 as a first additive, and lithium difluorophosphate as a second additive, wherein a weight ratio of the first additive to the second additive is in a range of 1:2 to 1:10, and a lithium secondary battery including the non-aqueous electrolyte solution.