▎ 摘　　要

NOVELTY - Method for preparing graphene-supported double transition metal sulfide composite material, involves (a) preparing graphene oxide aqueous dispersion, (b) dissolving cobalt-containing inorganic salt and aluminum-containing inorganic salt in water, adding molybdenum-containing intercalation material, and mixing to obtain a mixed solution, (c) adding the mixed solution to the aqueous dispersion, adjusting pH to 9-10 using an alkali solution, crystallizing, cooling, washing with water and ethanol, and drying to obtain an intercalated hydrotalcite supported by graphene oxide, (d) adding the intercalated hydrotalcite to water, ultrasonically dispersing, hydrothermally vulcanizing, washing, drying, and calcining in an inert atmosphere to obtain a calcined product, and (e) pickling the calcined product, and drying to obtain the composite material. USE - The method is useful for preparing graphene-supported double transition metal sulfide composite material used for manufacturing sodium ion electrode materials (all claimed), and used as negative electrode material of sodium ion battery. ADVANTAGE - The method reduces the agglomeration phenomenon in the repeated charge and discharge process, and improves the electrochemical performance, and the prepared composite material has high reversible specific capacity and excellent cycle stability.