▎ 摘　　要

In this work, a simple and cost-effective method was developed to prepare a novel structure with Co3O4 nanoparticles dispersed on 3D graphene-wrapped carbon foam with melamine foam as initial skeleton. This Co3O4/Reduced graphene oxide/Melamine derived carbon foam (Co3O4/RGO/MDCF) hybrid with a continuous conductive network and low bulk density of 10.6 mg/cm(3) exhibits high specific microwave absorption performance. The maximum Reflection Loss (RL) value of -31.88 dB at 11.54 GHz and a qualified bandwidth of 3.4 GHz (RL