| abstract |
The present invention relates to a lithium secondary battery electrolyte and a lithium secondary battery comprising the same, the electrolyte is a non-aqueous organic solvent; Lithium salts; And an additive, wherein the additive is [1,3] dichiolo [4,5-d] [1,3] dithiol-2,5-dione ([1,3] dithiolo [4] Of a carbonate derivative having a substituent selected from the group consisting of a first additive of a, 5-d] [1,3] dithiole-2,5-dione) compound and a halogen, a cyano group (CN) and a nitro group (NO 2 ) It is characterized by including a second additive.n n n [Formula 1]n n n n n n n n The electrolyte solution of the present invention can provide a lithium secondary battery having excellent life characteristics and excellent low temperature discharge capacity characteristics. |