Cathode active material for non-aqueous electrolyte secondary battery and manufacturing method for same, and non-aqueous electrolyte secondary battery

A cathode active material for a non-aqueous electrolyte secondary battery expressed by a general formula (A):

• Li1+aNixCoyMnzMtO2 , where 0.12<a≤0.20, x+y+z+t=1, 0.30≤x≤0.50, 0.30<y≤0.40, 0.15≤z≤0.40, 0.0003<t≤0.01, and M is one or more element selected from among Ca, Mg, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W, and includes layered hexagonal crystal lithium nickel cobalt manganese composite oxide particles;
• the lithium nickel cobalt manganese composite oxide particles comprise spherical shaped secondary particles that are formed by an aggregation of plural primary particles, wherein the primary particles have a spherical shape;
• wherein a ratio of an integrated width of a diffraction peak on plane (104) with respect to an integrated width of a diffraction peak on plane (003) of the Miller indices (hkl) in powder Xray diffraction that uses CuKα rays is 1.38 or greater and 1.49 or less;
• and
• a ratio of a peak integrated intensity on plane (003) with respect to a peak integrated intensity on plane (104) of the Miller indices (hkl) in powder X-ray diffraction that uses CuKα rays is 1.23 or greater and 1.29 or less.