Preparation method of three-dimensional ordered macroporous sodium ion battery negative electrode material

The invention discloses a preparation method of a three-dimensional ordered macroporous sodium ion battery negative electrode material, and belongs to the technical field of sodium ion battery negative electrode materials. Dissolving tetrabutyl titanate and zinc nitrate hexahydrate in absolute ethyl alcohol to obtain a first solution, dissolving citric acid in absolute ethyl alcohol to obtain a second solution, and mixing the first solution and the second solution to obtain a precursor solution; dipping the polystyrene sphere hard template in the precursor solution, taking out and drying to obtain a precursor; and carbonizing the precursor in an argon atmosphere to obtain the three-dimensional ordered macroporous sodium ion battery negative electrode material. According to the method, high-conductivity Ti-ZnO can be generated to serve as a main body material, a three-dimensional ordered macroporous structure serves as a supporting material, and the three-dimensional ordered macroporous structure is achieved w