▎ 摘　　要

NOVELTY - Preparing sodium ion battery cathode sodium ion comprises (i) taking soluble sodium salt and sulfate of M as raw material, mixing uniformly in liquid phase system under the protection of inert atmosphere and reducing agent, and drying to prepare mixture of sodium, M, and sulfuric acid, and (ii) mixing the mixture with conductive agent, using mechanical force or shearing force to construct shell core structure, and sintering by inert atmosphere to obtain final product. USE - Preparation method of sodium ion battery positive electrode material used in portable 3C market, new energy electric automobile field. Uses include but are not limited to wind power, water and electricity, photoelectric and clean energy. ADVANTAGE - The method provides sodium ion battery positive electrode with high mixing uniformity, high product purity and excellent electrochemical characteristics.