▎ 摘　　要

NOVELTY - Preparing cube-shaped manganese-iron sodium thiocyanate of three-dimensional graphene coating involves using improved Hummers method for preparing graphene oxide with de-ionized water to wash to neutral, freezing, and drying to obtain three dimensional high surface area oxide graphene and putting in muffle furnace to obtain three-dimensional redox graphene specific surface area. The 0.2 g oxidation graphene is added and dispersed ultrasonically in 100mL of de-ionized water. The 0-1.6 g polyvinyl chloride is added. The mixed solution of 0.05 mole sodium ferricyanide and 14 g sodium chloride are added and stirred at room temperature for 2 hours. The 0.05 mole manganese is added in mixed solution. The 0-0.6 molar hydrochloric acid solution is added and stirred for 1 hours. The mixture and 50 mL of de-ionized water is added and stirred at room temperature reaction for 24 hours. USE - Method for preparing cube-shaped manganese-iron sodium thiocyanate of three-dimensional graphene coating used as sodium-ion battery anode material (claimed). ADVANTAGE - The method enables to prepare cube-shaped manganese-iron sodium thiocyanate of three-dimensional graphene coating that has lattice defects, excellent electronic conductivity, high sodium ion transfer channel and structure stability, high reversible capacity and good circulation and rate stability. DETAILED DESCRIPTION - The obtained precipitate with de-ionized water are added till pH is 7 and placed in vacuum drying box at 100 degrees C and processed heat preservation for 12 hours to obtain cube-shaped manganese-iron sodium thiocyanate of three-dimensional graphene coating.