Facile Construction of VS2@GNSs Composites with 1D/2D Hierarchical Structures for Efficient Electromagnetic Wave Absorption
The proliferation of electronic devices has exacerbated electromagnetic pollution, necessitating advanced electromagnetic wave (EMW) absorbing materials. In this study, VS2 nanorods were uniformly grafted onto graphene nanosheets (GNSs) via a facile ball milling method, constructing 1D/2D hierarchical VS2@GNSs composites with superior EMW absorption properties. The minimal reflection loss (RLmin) reached -49.83 dB at a thickness of 1.83 mm, while an ultra-broad effective absorption bandwidth (EAB) of 6.72 GHz was achieved at 1.96 mm. These performances are attributed to enhanced impedance matching and EMW attenuation capacities. Computer simulation technology (CST) full-wave simulations confirmed remarkable radar cross-section (RCS) suppression, with a reduction value of up to 20.38 dB m2 compared to a metallic substrate. This work provides theoretical and experimental guidance for designing high-performance stealth materials.