▎ 摘　　要

NOVELTY - Preparation of nitrogen-doped molybdenum disulfide/titanium dioxide/graphene composite material, involves (a) putting at least one chosen from polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA) in at least one solvent chosen from deionized water, acetic acid, ethanol and dimethylformamide (DMF) to obtain solution (A), (b) putting at least one chosen from tetrabutyl titanate and isobutyl titanate in at least one solvent chosen from acetic acid, ethylene glycol, methyl ether and citric acid, uniformly mixing, and adding melamine to the mixed solution to obtain solution (B), (c) dispersing graphene oxide in DMF or ethanol, taking the aqueous solution of ammonium tetrathiomolybdate, dripping it to the graphene dispersion, and stirring to obtain dispersion (C), (d) mixing solution (B) and solution (A), and dripping dispersion (C) into the mixed solution to obtain dispersion (D), and (e) electrospinning it to obtain the precursor fiber material, and performing microwave reaction. USE - The method is used for preparation of nitrogen-doped molybdenum disulfide/titanium dioxide/graphene composite material which is used as an electrode material (all claimed) such as a lithium-ion battery cathode material. ADVANTAGE - The method provides a nitrogen-doped molybdenum disulfide/titanium dioxide/graphene composite material with high specific capacity and high stability. The method ensures one-step, and rapidly prepares high nitrogen content doped molybdenum disulfide/titanium dioxide/graphene composite material through electrospinning and subsequent microwave-assisted processing. The composite material avoids the loss caused by the sublimation of the nitrogen-doped precursor during the traditional nitrogen-doping process during the preparation process. The composite material improves the nitrogen doping efficiency and realizes rapid and high nitrogen doping. The prepared composite material is not easy to change in the air, easy to store, and has a large specific surface area. When the composite material is used as a lithium-ion battery cathode material, the composite material exhibits high specific capacity and excellent cycle stability. DETAILED DESCRIPTION - Preparation method of nitrogen-doped molybdenum disulfide/titanium dioxide/graphene composite material, involves (a) putting at least one chosen from polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA) in at least one solvent chosen from deionized water, acetic acid, ethanol and dimethylformamide (DMF) to obtain solution (A), (b) putting at least one chosen from tetrabutyl titanate and isobutyl titanate in at least one solvent chosen from acetic acid, ethylene glycol, methyl ether and citric acid, uniformly mixing, and adding melamine to the mixed solution to obtain solution (B), (c) dispersing graphene oxide in DMF or ethanol, taking the aqueous solution of ammonium tetrathiomolybdate, dripping it to the graphene dispersion, and stirring for 1 hour to obtain dispersion (C), (d) adding solution (B) to solution (A), mixing, and dripping dispersion (C) into the mixed solution to obtain dispersion (D), and (e) electrospinning the dispersion (D) after ultrasonic processing to obtain the precursor fiber material, placing the precursor fiber material in a microwave reactor, and performing microwave reaction under nitrogen/oxygen atmosphere to the composite material.