POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM-ION SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM-ION SECONDARY BATTERY, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY, LITHIUM-ION SECONDARY BATTERY

摘要

A positive-electrode active material precursor for lithium-ion secondary battery includes: a metal complex hydroxide particle, that includes nickel (Ni), manganese (Mn), zirconium (Zr), and an additive element M (M). When a linear analysis is performed by EDX on a cross section of the metal complex hydroxide particle along a direction of diameter from a center, a ratio of a maximum zirconium concentration to an average zirconium concentration is 2 or less.