▎ 摘　　要

NOVELTY - Graphene foam has three-dimensional connected network structure with seamless connectivity, density of 0.1-100 mg/cm3, porosity of 60-99.9%, specific area of 130-2600 m2/g and electroconductivity of 0.5-1000 second/cm. USE - Graphene foam is used for heat conductive composite material, thermal management material, electromagnetic shielding material, absorption material, catalysis material, sensing material and energy storage material. ADVANTAGE - The graphene foam has excellent porosity, specific surface area, charge conduction capacity and thermal conductivity, and reduced density. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene foam, which involves catalyzing and cracking the three-dimensional connected graphene produced by carbon source gas, on surface of the three-dimensional porous metal using the chemical vapor deposition, removing the porous metal substrate, and getting the porous foamed graphene three-dimensional macro component.