▎ 摘　　要

NOVELTY - Functional graphene material comprising two-dimensional graphene sheet layer as basic building block for forming three-dimensional porous network structure, is claimed. USE - The material is useful as organic vapor adsorption adsorbents, gas adsorption adsorbents, electrode super capacitor, lithium ion battery or catalysis (all claimed) and in environmental and energy sectors. ADVANTAGE - The material has high porosity (claimed), large specific surface area and pore volume, hierarchical porous structure, high adsorption of organic vapors, excellent electrochemical performance and good stability. The method is simple, convenient and suitable for large scale production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the functional graphene material comprising taking carbon dioxide and graphene airgel or graphene/metal hybrid aerogel and subjecting to activation reaction occurs to obtain functional graphene material having high porosity, where the reaction temperature is 650-1000 degrees C, preferably 750-950 degrees C, reaction time is 1-20 hours, preferably 1-4 hours, reaction heating rate is 1-50 degrees C/minute, preferably 1-10 degrees C/minute and reaction cooling rate is 1-50 degrees C/minute.