Positive active material doped with Ti method of fabricating of the same and lithium secondary battery comprising the same

摘要

A method for manufacturing a positive electrode active material doped with titanium is provided. The method of manufacturing the titanium-doped positive electrode active material includes nickel, cobalt, and manganese, preparing a metal salt aqueous solution having a nickel concentration of 90 mo% or more, supplying the metal salt aqueous solution to a coprecipitation reactor, nickel, cobalt, And preparing a positive electrode active material precursor containing a metal hydroxide having a constant concentration of manganese in all particles, mixing and firing the positive electrode active material precursor, lithium salt, and titanium oxide to prepare a positive electrode active material doped with titanium. It can contain.