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

摘要

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): Liz(Ni1-x-yCoxMny)O2  (I) wherein, 0.97≰z≰1.1, 0.5≰1-x-y≰0.8, and x:y=1:1.15 to 1:3.