Abstract: The present application relates to a lithium ion battery positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) preparing a mixed solution from a raw material containing metal ions, a polymer and a solvent, independently leaving same and an ammonium source to stand in the same space, and subjecting same to solid-liquid separation to obtain a precursor, and (2) mixing and calcining the precursor in step (1) and a lithium source to obtain a lithium ion battery positive electrode material.

Abstract: The present application provides a composite positive electrode material and a preparation method therefor, and a lithium ion battery. The positive electrode material comprises a core and a cladding layer cladded on the surface of the core, the core comprises a lithium-rich positive electrode material, and the cladding layer comprises an n-type thermoelectric material. The method comprises: compounding the lithium-rich positive electrode material with the n-type thermoelectric material to obtain the composite positive electrode material. The compounding method comprises: method I, mixing the lithium-rich positive electrode material with the n-type thermoelectric material for treatment to obtain the composite positive electrode material; or method II, dispersing and treating raw materials of the lithium-rich positive electrode material and the n-type thermoelectric material to obtain the composite positive electrode material.