CATHODE MATERIAL FOR A LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY INCLUDING SAME

The present invention relates to a cathode active material for a lithium secondary battery, a method of preparing thereof and a lithium secondary battery comprising the same, wherein the cathode active material comprises a compound of formula (I): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒLi z (Ni 1-x- yCo x Mn y )O 2 €ƒ€ƒ€ƒ€ƒ€ƒ(I) wherein, 0.97 ‰¤ z ‰¤ 1.1, 0.5 ‰¤ 1 - x - y ‰¤ 0.8 , x:y = 1:1.15 to 1:3.