▎ 摘　　要

NOVELTY - A graphene/MXene composite aerogel material has three-dimensional porous structure and MXene sheet layer attached to thin graphene sheet. USE - Graphene/MXene composite aerogel. ADVANTAGE - The graphene/MXene composite aerogel material shows excellent electromagnetic wave absorption performance by enhancing the dissipation of electromagnetic waves inside the material as the composite material provides multiple paths for scattering and reflecting waves with its unique three-dimensional porous structure. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene/MXene composite aerogel material, which involves (1) adding lithium salt into hydrochloric acid solution, stirring to obtain mixed solution, and adding titanium aluminum carbide (Ti3Al2C2) powder into the mixed solution, fully reacting, centrifuging the reacted reaction solution for the first time, mixing the precipitate into deionized water, and centrifuging for the second time to obtain MXene dispersion, and (2) preparing graphene oxide dispersion liquid, mixing the graphene oxide dispersion liquid with the MXene dispersion liquid obtained, mechanically stirring, adding a foaming agent to obtain composite material slurry, freezing and drying the composite material slurry, and finally performing heat treatment under the protection of inert gas.