▎ 摘　　要

NOVELTY - Cobalt disulfide/graphene-graphene nanobelt composite airgel is claimed. The airgel is obtained by growing graphene-graphene nanobelt composite airgel under in situ condition of cobalt dioxide particles. USE - The cobalt disulfide/graphene-graphene nanobelt composite airgel is useful in electrocatalysis (claimed). ADVANTAGE - The cobalt disulfide/graphene-graphene nanobelt composite airgel has large specific surface area, excellent conductivity, stable chemical properties, good mechanical properties, and is high-performance electrocatalytic material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing cobalt disulfide/graphene-graphene nanobelt composite airgel comprising (i) mixing graphene nanobelt dispersion and graphene oxide dispersion in a mass ratio of 2:1-1:2 to form homogeneous dispersion, freeze-drying to obtain graphene-graphene nanobelt composite airgel, (ii) dissolving cobalt salt and sulfur salt in solvent to obtain homogeneous salt solution, mixing salt solution with graphene-graphene nanobelt composite airgel, and performing solvent thermal reaction to obtain final product.