698
Views
19
Crossref
14
WoS
18
Scopus
0
CSCD
Carbon-based electromagnetic wave absorbing materials (absorbers) adhered with metallic sulfide nanoparticles of good electrical conductivity attract increasing researchers’ attention. In this study, on the basis of carbon fiber (Cf)@Fe3O4 nanocomposites obtained by the electrostatic spinning and reflow method, Cf@FeS2 nanocomposite was successfully prepared during a further hydrothermal process. The products exhibit excellent electromagnetic wave absorption performances with a minimum reflection loss (RLmin) of −54.11 dB at 2.13 mm matching thickness. At the same time, the optimal effective absorption bandwidth (EAB) value of 6.04 GHz at a thickness of 1.98 mm covers the whole Ku band, suggesting its excellent electromagnetic wave absorption performances. In addition, the interlaced network structure constructed by carbon fiber, outstanding conductivity of FeS2 nanoparticles, and interfacial polarization from hetero-structure play significant parts in enhancing the electromagnetic parameters and absorption performances. All these results suggest that the Cf@FeS2 nanocomposites can be taken as a new electromagnetic wave-absorbing material under their low density, simple craft, and strong absorption characteristics.
The work reported here was supported by the National Natural Science Foundation of China (Nos. 52072196, 52002199, 52002200, and 52102106), the Major Basic Research Program of Natural Science Foundation of Shandong Province (No. ZR2020ZD09), the Natural Science Foundation of Shandong Province (Nos. ZR2019BEM042 and ZR2020QE063), the Innovation and Technology Program of Shandong Province (No. 2020KJA004), and the Taishan Scholars Program of Shandong Province (No. ts201511034). We express our grateful thanks to them for their financial support.