A positive electrode material, a preparation method thereof and a lithium-ion battery are provided. A first aspect provides a positive electrode active material, where a chemical composition of the positive electrode active material is Li[NiCoM1M2]OA, M1 i...

Provided are a positive electrode material, and a preparation method and a use thereof. The positive electrode material has a Dv50 value of α, with the unit of um, the lithium-rich amount of the positive electrode material is y, and the average porosity o...