▎ 摘　　要

NOVELTY - In-situ preparation of three-dimensional molybdenum carbide-molybdenum nitride/reduced graphene oxide heterostructure material comprises (i) uniformly dispersing polystyrene balls into the mixed solution of deionized water and absolute ethanol, adding ammonium molybdate tetrahydrate and sucrose and stirring, (ii) adding graphene oxide and cetyl trimethyl ammonium bromide into deionized water, and ultrasonically treating, (iii) slowly adding solution obtained into the solution, and using the obtained mixed solution as a precursor solution for spray drying, (iv) transferring product into tube furnace, carrying out carbonization treatment and naturally cooling, (v) adding melamine and the product obtained into the upstream and middle parts of the tube furnace, and performing in-situ nitridation under the protection of an inert gas to obtain material, and (vi) supporting elemental sulfur on material by vacuum melt-diffusion method and using as anode material for lithium-sulfur battery. USE - The three-dimensional molybdenum carbide-molybdenum nitride/reduced graphene oxide heterostructure material useful as sulfur anode host material of lithium sulfur battery (claimed). ADVANTAGE - The material has good controllability and high crystallinity. The anode material applied to lithium sulfur battery exhibits excellent multiplying power performance and cycle performance. The rGO not only improves the conductivity of the sulfur anode, but also can be used as protective layer to prevent the structure from being damaged in the circulation process.