THE LITHIUM SECONDARY BATTERY

摘要

The present invention provides a lithium secondary battery comprising (i) a cathode material including lithium metal phosphate of chemical formula 1, Li_1+aM(PO_4-b)X_b, wherein M is one or more selected from a group consisting of Group 2-12 metals; X is one or more selected from a group consisting of F, S, and N; a satisfies an inequality, -0.5<= a <= +0.5; and b satisfies an inequality, 0 <= b <= 0.1; (ii) an anode material including amorphous carbon; and (iii) a lithium secondary battery electrolyte including lithium salts and an ether-based solvent.