| abstract |
Provided are: a positive electrode active material for a nonaqueous electrolyte secondary cell in which gelling of a positive electrode mixture paste is suppressed and excellent weather resistance is achieved; a method for manufacturing the positive electrolyte active material; and the like. The present invention is based on: a method for manufacturing a positive electrode active material for a nonaqueous electrolyte secondary cell, the method being characterized by including washing a powder comprising a lithium-nickel composite oxide represented by the general formula Li z Ni 1-x-y Co x M y O 2 (where 0 ≤ x ≤ 0.35, 0 ≤ y ≤ 0.10, 0.95 ≤ z ≤ 1.10, and M is one or more elements selected from Mn, V, Mg, Mo, Nb, Ti, and Al) with an aqueous solution that contains one or more lithium salts selected from water-soluble lithium salts other than lithium hydroxide, and drying the washed powder; and the like. |