Interface engineering optimization: in-situ growth NiZn/carbon aerogel composite for high-performance microwave absorption

Simultaneously achieving radar-infrared compatibility and multi-environment adaptability in a single material poses significant challenges. By amplifying interface effects, this study proposes a composite carbon aerogel design strategy based on multiscale interface engineering and conductive network reconstruction. This study constructed a 3D hierarchical heterostructures of MOF@aramid fiber-chitosan carbon sheets by inducing in situ directed growth of bimetallic MOF on the surface of aramid fibers via amino ligand, and systematically investigated the synergistic wave-absorption as well as thermal insulation mechanism. The results demonstrate that at a relatively thin thickness, the optimal reflection loss (RL_min) reaches −65.69 [email protected] GHz with a maximum effective absorption bandwidth (EAB_max) of 6.32 GHz. Notably, the simulated sample's radar cross-section (RCS) value shows a 24.67 dB m² reduction compared to the perfect electric conductor (PEC). Furthermore, the samples demonstrated exceptional thermal management capability, hydrophobicity, and corrosion resistance.