LITHIUM SECONDARY BATTERY

The present invention relates to a lithium secondary battery. Particularly, the lithium secondary battery comprising: a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; a separator interposed between the negative electrode and the positive electrode; and a non-aqueous electrolyte solution comprising a lithium salt; an organic solvent; and a compound represented by Formula 1, and thus, may improve overall performance of the battery.