▎ 摘　　要

NOVELTY - Sodium ion battery anode material comprises a core-shell structure, which comprises a titanium oxide core, an iron sodium sulfate porous coating layer and a carbon coating layer arranged from inside to outside. The titanium monoxide is micronsized titanium oxide, and the raw material of the carbon coating layer is graphene. The micron-sized titanium oxide is porous titanium oxide, and the graphene is nitrogen doped graphene. USE - Used as sodium ion battery anode material. ADVANTAGE - The titanium oxide material is located in the inner core layer, which has excellent conductivity, can accelerate the circulation of the internal electronic, so as to shorten the electronic transmission distance. At the same time, titanium oxide itself has oxygen deficiency and lack of titanium, capable of forming stable attraction to ferrous ion in the iron sodium sulfate coating layer, to the phenomenon of titanium oxide. A titanium oxide as inner core of the metal suction system greatly increases the defect system of sodium iron sulfate, and thus greatly improves the anode of the material. The surface of the carbon material can greatly improve the surface electronic transmission ability, to improve the electronic conductivity and electronic conduction speed of the sodium ion battery material anode. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparation method of sodium ion battery anode material; and odium ion battery.