▎ 摘　　要

NOVELTY - Preparing molybdenum disulfide/graphene/carbon multi-stage porous composite material comprises e.g. (1) weighing polyacrylonitrile, polyvinylpyrrolidone, ammonium tetrathiomolybdate and graphene, dissolving in dimethylformamide with stirring, and filtering with 400 mesh stainless steel mesh; (2) taking proper amount of solution, and performing electrostatic spinning to obtain composite fiber film; (3) adding the composite fiber film in tube furnace under nitrogen (N2)/hydrogen (H2) mixed atmosphere, heating to 380-450 degrees C, maintaining it for 1-6 hours, cooling to room temperature, and taking out; (4) preparing potassium hydroxide saturated solution, adding the treated composite fiber film into potassium hydroxide saturated solution for impregnation, carrying ultrasonic treatment, allowing to stand, and drying under vacuum for 8 hours, and (5) adding above-mentioned impregnated composite fiber film into tube furnace for high temperature activation. USE - The composite material is useful in the fields of super capacitor electrode material, water electrolysis hydrogen production catalytic material, and mercury adsorption materials (claimed). ADVANTAGE - The composite material: high specific surface area, developed pore structure, controllable pore size and structure. DETAILED DESCRIPTION - Preparing molybdenum disulfide/graphene/carbon multi-stage porous composite material comprises (1) weighing polyacrylonitrile, polyvinylpyrrolidone, ammonium tetrathiomolybdate and graphene, dissolving in dimethylformamide with stirring, and filtering with 400 mesh stainless steel mesh; (2) taking proper amount of solution, and performing electrostatic spinning to obtain composite fiber film; (3) adding the composite fiber film in tube furnace under nitrogen (N2)/hydrogen (H2) mixed atmosphere with volume ratio of 9/1, heating to 380-450 degrees C at temperature increase rate of 2-6 degrees C/minute, maintaining it for 1-6 hours, cooling to room temperature, and taking out; (4) preparing potassium hydroxide saturated solution, adding the treated composite fiber film into potassium hydroxide saturated solution for impregnation, carrying ultrasonic treatment for 1 hours, allowing to stand for 48 hours, and drying under vacuum for 8 hours, and (5) adding above-mentioned impregnated composite fiber film into tube furnace for high temperature activation, cooling to room temperature, taking out, washing with dilute hydrochloric acid solution, and drying under vacuum for 10 hours.