Electrolyte solution for secondary lithium battery and secondary lithium battery using the same

A lithium secondary battery comprising:

• a positive electrode comprising a positive electrode active material capable of incorporating and deincorporating lithium;
• a negative electrode comprising a negative electrode active material capable of incorporating and deincorporating lithium;
• and
• an electrolyte disposed between the positive electrode and the negative electrode, wherein
• the electrolyte comprises a lithium salt, a non-aqueous organic solvent, and a pyrrolidine derivative represented by Formula 1:
• wherein, in Formula 1,
• X is hydrogen, a formyl group or a salt thereof, a carboxyl group or a salt thereof, a C1-C20 alkyl group, a C1-C20 hydroxyalkyl group, a C1-C20 aminoalkyl group, a C1-C20 thioalkyl group, or a C1-C20 cyanoalkyl group, and
• R1 to R4 are each independently hydrogen, deuterium, a halogen atom, a hydroxyl group, a thio group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine, a hydrazone, a formyl group or a salt thereof, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid or a salt thereof, a C1-C20 hydroxyalkyl group, a C2-C20 heteroaryl group, or a C6-C20 aryl group.