POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING POSITIVE ELECTRODE ACTIVE MATERIAL

摘要

This proposes a minimum core radius for nickel-based metal hydroxide particles having a core-shell gradient (CSG) in which a concentration of nickel in a core portion is constantly maintained and a concentration of nickel in a shell portion is sharply decreased.