POSITIVE ELECTRODE MATERIAL POWDER AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE MATERIAL POWDER

The present invention relates to positive electrode material powder including a lithium composite transition metal oxide including nickel, cobalt, manganese, and zirconium, wherein a degree of single particle formation defined by Equation 1 is in a range of 2.5 to 4.5, and a method of preparing positive electrode material powder, in which four-times sintering and a zirconium doping process are included and D50 of the transition metal-containing precursor is controlled to 95% or less of D50 of the positive electrode material powder, as a method of preparing the same.