▎ 摘　　要

NOVELTY - Preparing molybdenum sulfide/graphene/carbon nano-fiber composite material comprises e.g taking polyacrylonitrile powder adding into N,N-dimethylformamide solvent, stirring, electrostatic spinning, pre-oxidizing, cutting, placing in graphene oxide solution, and stirring, freeze-drying, high temperature carbonizing, dissolving ammonium tetrathiomolybdate and hydrazine hydrate in organic solvent, adding graphene/carbon nano-fiber airgel into salt solution and hydro-thermal reacting, subjecting the molybdenum sulfide/graphene /carbon nano-fiber composite material to heat treatment. USE - The composite material is useful as high-performance electro-catalytic material and as electrode material in lithium ion battery and solar battery (claimed). ADVANTAGE - The composite material: has three dimensional porous special structure, good electrical conductivity, and stable chemical properties. DETAILED DESCRIPTION - Preparing molybdenum sulfide/graphene/carbon nano-fiber composite material comprises (i) taking polyacrylonitrile powder adding into N,N-dimethylformamide solvent, continuously stirring to obtain the homogeneous viscous dispersion liquid, (ii) taking polyacrylonitrile dispersion liquid, and subjecting to electrostatic spinning to obtain polyacrylonitrile nano-fiber film, (iii) taking the polyacrylonitrile nano-fiber film, pre-oxidizing under air atmosphere to obtain pre-oxidized polyacrylonitrile nano-fiber film, (iv) cutting the pre-oxidized polyacrylonitrile nano-fiber film, placing in a solution of graphene oxide, and mechanically stirring to obtain homogeneous graphene oxide/polyacrylonitrile nanofibers paste, (v) taking resulting thick paste of graphene oxide/polyacrylonitrile nanofibers, and subjecting to freeze-drying to obtain graphene oxide/polyacrylonitrile nanofibers airgel, (6) taking the graphene oxide/polyacrylonitrile nanofibers airgel, and carrying out high temperature carbonization under the inert gas protection to obtain graphene/carbon nano-fiber airgel, (vii) taking ammonium tetrathiomolybdate and hydrazine hydrate and dissolving in the organic solvent to obtain homogeneous salt solution, (viii) taking the graphene/carbon nano-fiber airgel adding into the salt solution and transferring into a hydro-thermal reaction kettle and carrying out hydro-thermal reaction to obtain molybdenum sulfide/graphene /carbon nano-fiber composite material, (ix) taking molybdenum sulfide/graphene /carbon nano-fiber composite material, subjecting to heat treatment under the protection of inert gas to the crystal structure for improving molybdenum sulfide. An INDEPENDENT CLAIM is also included for molybdenum sulfide/graphene/carbon nano-fiber composite material prepared by the above mentioned method.