▎ 摘　　要

NOVELTY - Preparing MXene composite fiber reinforced graphene aerogel wave-absorbing material comprises (i) preparing MXene composite fiber, (ii) preparing graphene oxide aqueous dispersion solution, (iii) adding MXene composite fiber into the graphene oxide aqueous dispersion solution, then adding reducing agent, carrying out high speed dispersion to obtain MXene composite fiber-graphene oxide aqueous dispersion solution, (iv) placing the MXene composite fiber-graphene oxide aqueous dispersion solution into the reaction kettle, carrying out hydrothermal self-assembly reaction to obtain MXene composite fiber reinforced graphene hydrogel, and (v) adding the MXene composite fiber reinforced graphene hydrogel into the liquid nitrogen pre-freezing, then freezing and drying treatment to obtain MXene composite fiber reinforced graphene aerogel wave-absorbing material. USE - The method is useful for preparing MXene composite fiber reinforced graphene aerogel wave absorbing material. ADVANTAGE - The method enables to prepare MXene composite fiber reinforced graphene aerogel wave-absorbing material, which has impedance matching while improving the electromagnetic wave loss ability, stronger wave-absorbing loss and wider absorption bandwidth.