Rechargeable lithium battery comprising a lithium nickel cobalt manganese composite oxide cathode and an ethylene carbonate based electrolyte

摘要

Provided is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a negative active material and an electrolyte including a lithium salt and a non-aqueous organic solvent, wherein the positive active material includes a nickel-based composite oxide represented by the following Chemical Formula 1, the non-aqueous organic solvent includes ethylene carbonate, and the ethylene carbonate is included in an amount of 7.5 to 27.5 volume% based on the total amount of the non-aqueous organic solvent. €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ[Chemical Formula 1]€ƒ€ƒ€ƒ€ƒ€ƒLiNi x Co y Mn z O 2 (In the above Chemical Formula 1, 0.63 = x = 0.89, 0.05 y 0.25, 0.03 z 0.2, and x+y+z=1.)