▎ 摘　　要

NOVELTY - Method for preparing graphene-reinforced biomass porous carbon electromagnetic wave-absorbing material, involves (i) pretreating egg white to obtain a uniform protein solution, (ii) preparing graphene oxide slurry, (iii) adding graphene oxide slurry to the protein solution and crushing to obtain a uniform protein porous carbon precursor solution, (iv) heating the protein porous carbon precursor in a water bath and denaturing protein to obtain a porous carbon precursor hydrogel, (v) freezing the hydrogel by adopting liquid nitrogen and freeze-drying to obtain a dried porous carbon precursor, and (vi) heating and carbonizing the dried porous carbon precursor in an argon gas atmosphere to obtain the product. USE - The method is useful for preparing graphene-reinforced biomass porous carbon electromagnetic wave-absorbing material (claimed). ADVANTAGE - The method utilizes in-situ doping to achieve nitrogen doping of porous carbon, provides cost-effective electromagnetic wave-absorbing material, which has excellent electromagnetic wave absorbing performance, light weight, high specific wave absorbing intensity and excellent mechanical strength, and adopts simple processing technology.