▎ 摘　　要

NOVELTY - Preparing cobalt molybdate nanosheet array supercapacitor electrode material based on three-dimensional graphene foam involves using foamed nickel and methane as the substrate and carbon source, respectively, and obtaining graphene foam by chemical vapor deposition on the surface of the foamed nickel, and the nickel is etched by hydrochloric acid. The graphene foam is used as a substrate, cobalt nitrate, sodium molybdate and water are prepared to obtain a precursor solution, and the graphene foam is mixed with the precursor solution for hydrothermal reaction to obtain a 3D-graphene@cobalt molybdenum oxide (CoMoO4) nanosheet array composite material. USE - Method for preparing cobalt molybdate nanosheet array supercapacitor electrode material based on three-dimensional graphene foam. ADVANTAGE - The method enables to prepare cobalt molybdate nanosheet array supercapacitor electrode material based on three-dimensional graphene foam, which effectively avoids the use of the adhesive agent, controls the shape of the material by controlling the concentration of the precursor solution, and the prepared composite electrode material has high specific capacitance and good cycle stability.