LITHIUM SECONDARY BATTERY HAVING IMPROVED CYCLE CHARACTERISTICS

The present invention relates to a lithium secondary battery which includes a positive electrode, a negative electrode including a carbon-based material and a silicon-based compound, a non-aqueous electrolyte solution containing LiPF6, LiN(FSO2)2, and a non-aqueous organic solvent, and a separator, wherein a fluorine-based cyclic carbonate organic solvent and a fluorine-based linear carbonate organic solvent are included as the non-aqueous organic solvent.