▎ 摘　　要

NOVELTY - Spherical nickel molybdate or graphene composite material preparation involves dispersing nickel (II) nitrate hexahydrate and molybdenum chloride in an ethylene glycol solution ultrasonically to obtain mixed solution, and then dispersing graphene oxide solution ultrasonically. The dispersed graphene oxide solution is added to the mixed solution with stirring uniformly, and then placed in an autoclave for reaction. The obtained product is washed and lyophilized. The lyophilized sample is subjected to high-temperature baking treatment to obtain the spherical nickel molybdate or graphene composite material. USE - Method for preparing spherical nickel molybdate or graphene composite material. ADVANTAGE - The method prepares the spherical nickel molybdate or graphene composite material in a simple, cost-effective and eco-friendly manner with high preparation efficiency by using relatively cheap raw materials. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron microscopic image of the prepared spherical nickel molybdate or graphene composite material.