Tailoring nanoparticles composites derived from metal-organic framework as electromagnetic wave absorber

In order to solve the electromagnetic pollution, in this paper, Nickel-cobalt-based spinel materials NiCo2S4@C/Porous Carbon (PC) composite material, composed of metal sulfide spinel, porous carbon composite material, was prepared. Thanks to the designable interface and the added dipoles, the mi-crowave dielectric responsiveness can be significantly improved, leading to enhanced microwave ab-sorption performance. The results show that, with a matching thickness of 2.1 mm, the minimum reflection loss (RLmin) reaches-59.36 dB at 15.28 GHz. Meanwhile, the effective absorption band (EAB) covers 6.8 GHz, indicating ideal broadband characteristics. In our case, the manufacture of multi-component EM absorbers using a new method can become a promising candidate for high -performance EM absorbers. (c) 2021 Elsevier Ltd. All rights reserved.

Automated summary

In this study, a new NiCo2S4@C/porous carbon composite material was prepared, with significantly improved microwave dielectric responsiveness and ideal characteristics of microwave absorption and broadband. This multi-component EM absorber shows promise for high-performance EM absorption materials.