MANUFACTURING METHOD OF NICKEL RICH CATHOD ACTIVE MATERIAL AND NICKEL RICH CATHOD ACTIVE MATERIAL MADE BY THE SAME

摘要

The present invention relates to a method for manufacturing a nickel-excessive anode active material and to a nickel-excessive anode active material made by the method, and more specifically, to a method for manufacturing a new nickel-excessive anode active material capable of preventing the mixing of cations, and to a nickel-excessive anode active material made by the method. The method for manufacturing a nickel-excessive anode active material according to the present invention increases a mixing ratio of lithium to transition metal, wherein the nickel-excessive anode active material manufactured by the manufacturing method of the present invention comprising a first heat treatment and a second heat treatment inhibits the mixing of anions, and a battery comprising the nickel-excessive anode active material according to the present invention exhibits an effect of improvement in the capacity characteristics by an excessive amount of nickel and improvement in the lifetime and rate characteristics.