▎ 摘　　要

NOVELTY - Preparation of a molybdenum disulfide/porous carbon sphere composite material involves subjecting a raw coal to liquid-phase oxidation treatment using a mixed acid, collecting the supernatant, dialyzing the supernatant, evaporating, concentrating, and freeze-drying to obtain coal-based graphene quantum dots, adding coal-based graphene quantum dots, sodium molybdate dehydrate, and thiourea to deionized water, ultrasonically processing and stirring to obtain a precursor solution, subjecting the precursor solution to ultrasonic spray pyrolysis to obtain a pyrolysis product, washing the pyrolysis product to neutrality, and freeze-drying. USE - Preparation of molybdenum disulfide/porous carbon sphere composite material used for capacitance desalination of capacitive desalination electrode. ADVANTAGE - The method adopts an in-situ growth strategy to prepare the molybdenum disulfide/porous carbon sphere composite material with developed pore structure, rich adsorption sites, excellent hydrophilicity, and electrical conductivity by ultrasonic spray pyrolysis. The preparation method is simple, it can run continuously, and it is suitable for large-scale production. The composite material has high specific surface area, high mesopore volume, and good conductivity and wettability, and provides abundant ion adsorption sites, shortens the diffusion path of ions and electrons, and effectively improves the desalination performance of the capacitive desalination electrode.