HIGH-DENSITY NICKEL-COBALT-MANGANESE COPRECIPITATION HYDROXIDE AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a high-density nickel-cobalt-manganese coprecipitation hydroxide as a precursor of a positive electrode active substance, which is useful for improving charge-discharge cycle characteristics and high temperature stability of a lithium-ion secondary battery, and to provide a method for producing the hydroxide.

SOLUTION: The high-density nickel-cobalt-manganese coprecipitation hydroxide is a precursor of a positive electrode active substance of a lithium-ion secondary battery. When the hydroxide is expressed by Ni(1-x-y)CoxMny(OH)2, x ranges from 0.1 to 0.4 and y ranges from 0.1 to 0.4. The high-density nickel-cobalt-manganese coprecipitation hydroxide comprises spherical particles having a tap density of not less than 2.1 g/ml and a specific surface area of 3 to 7 m2/g.

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