| 摘要 |
To provide a cathode active material for a non-aqueous electrode rechargeable battery, with which it is possible to improve input/output characteristics, particularly by reducing resistance in a low SOC state in which DCIR increases, and to provide a manufacturing method for same. The cathode active material includes layered hexagonal crystal lithium nickel manganese composite oxide particles represented by the general formula (A): Li 1+u Ni x Mn y Co z M t O 2 (where 0 ‰¤ u ‰¤ 0.20, x + y + z + t = 1, 0.30 ‰¤ x ‰¤ 0.70, 0.10 ‰¤ y ‰¤ 0.55, 0 ‰¤ z ‰¤ 0.40, 0 ‰¤ t ‰¤ 0.10, and M is one or more elements selected from Al, Ti, V, Cr, Zr, Nb, Mo, and W), and further including Na, Mg, Ca and SO 4 , in which the total amount of Na, Mg and Ca is 0.01 to 0.1 mass%, the amount of SO 4 is 0.1 to 1.0 mass%, and the ratio of the integrated intensity of the diffraction peak on plane (003) to that on plane (104) obtained by powder X-ray diffraction measurement using CuK± rays is 1.20 or greater. |
