POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD AND USE THEREOF

A positive electrode active material, and a preparation method and a use thereof. The chemical formula of the positive electrode active material is LiNaPNiMnMO, where −0.1≤a≤0.2, −0.2≤b≤0.2, −0.2≤c≤0.2, 3.8≤d≤4.3, 0