▎ 摘　　要

NOVELTY - Method for preparing graphene-coated magnesium sulfide nanoparticles involves (a) mixing graphene oxide powder, magnesium powder and sulfur powder in a mass ratio of a certain mass ratio for a period of time, (b) ball milling the powder obtained under the protection of a protective gas atmosphere, and (c) calcining the powder at a certain temperature for a certain time to obtain a composite material. USE - Preparation method of graphene-coated magnesium sulfide nano-particle for magnesium-sulfur battery anode used in field of chemical power supply. ADVANTAGE - The graphene-coated magnesium sulfide nano-particles can prevent the dissolution and shuttling of the magnesium sulfide, improves the circulation stability, can improve the conductivity and utilization rate of the sulfide, the synthesis step of the method is simple, and is easy to operate and convenient for industrialization. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the preparation method of graphene-coated magnesium sulfide nano-particle (Drawing includes non-English language text).