Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same

A non-aqueous electrolyte solution for a lithium secondary battery, the non-aqueous electrolyte solution comprising a lithium salt;

• an organic solvent;
• and a compound represented by Formula 1:
• wherein, in Formula 1,
• R1 to R3 are each independently an alkyl group having 1 to 6 carbon atoms and optionally substituted with a fluorine, an alkenyl group having 2 to 6 carbon atoms and optionally substituted with a fluorine, an alkynyl group having 2 to 6 carbon atoms and optionally substituted with a fluorine, or —R′OSi(R4)3;
• R′ is a direct linkage;
• an alkylene group having 1 to 6 carbon atoms and optionally substituted with a fluorine, an alkenylene group having 2 to 6 carbon atoms and optionally substituted with a fluorine, or an alkynylene group having 2 to 6 carbon atoms and optionally substituted with a fluorine;
• R4 is an alkyl group having 1 to 6 carbon atoms;
• L1 is —(CO)mO(CH2)n−;
• m is 0 or 1;
• n is an integer of 0 to 5;
• and
• A− is (CF3SO2)2N−, (FSO2)2N−, PF6−, PO2F2−, BF4−, ClO4−, (C2O4)BF2−, HSO4−, CF3SO3−, (C2F5SO2)2N−, C(CF2SO2)3−, AsF6−, SbF6−, AlCl4−, NbF6−, or CF3CO2−.
• wherein the compound represented by Formula 1 is included in an amount of 0.05 wt % to 5 wt % with respect to a total weight of the non-aqueous electrolyte solution.