TY - JOUR
T1 - Construction of hierarchical carbon fiber Aerogel@Hollow Co9S8 polyhedron for high-performance electromagnetic wave absorption at low-frequency
AU - Cui, Ce
AU - Geng, Liang
AU - Jiang, Shan
AU - Bai, Wenhao
AU - Dai, Lanling
AU - Jiang, Shouxiang
AU - Hu, Jian
AU - Ren, Erhui
AU - Guo, Ronghui
N1 - Funding Information:
This work was financially supported by The Science and Technology Planning Project of Sichuan Province (No. 2020YFN0150), Sichuan Science and Technology Program (2021YFG0224), The National Natural Science Foundation of China and The Civil Aviation Administration of China (No. U1833118 ), Cooperation Project between Sichuan University and Yibin City ( 2020CDYB-5 ), and Engineering characteristic team of Sichuan University ( 2020SCUNG122 ).
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/6/15
Y1 - 2023/6/15
N2 - The development of low-frequency electromagnetic wave absorption materials faces considerable obstacles due to intense coupling of wave impedance and electromagnetic dissipation capacity. Herein, a novel hierarchical structure composed of 3D interconnected carbon fibers aerogel loaded with hollow cobalt (Co)-sulfide polyhedrons (CFA@HCS) is designed. Typical 3D interconnected carbon fibers derived from bamboo cellulose fiber aerogel serve as a skeleton to support the Co9S8 with a hollow structure. The electromagnetic parameters of the composite are effectively modified by combining the carbon-based skeleton with the hollow Co9S8. The coupling interaction of the electromagnetic characteristics at low frequency can be significantly improved. Accordingly, the minimum reflection loss (RLmin) of CFA@HCS with 15 wt% filler loading reaches −53.6 dB at 3.36 GHz and its effective absorption bandwidth can cover almost all the S and C bands (3.04–8 GHz). In addition, the minimum reduction of the radar cross section (RCS) reaches –22.6 dB m2 when the incidence theta is −60°. This work demonstrates that low-frequency EMW absorption could be improved by constructing hierarchical composites of carbon fiber/transition metal sulfide.
AB - The development of low-frequency electromagnetic wave absorption materials faces considerable obstacles due to intense coupling of wave impedance and electromagnetic dissipation capacity. Herein, a novel hierarchical structure composed of 3D interconnected carbon fibers aerogel loaded with hollow cobalt (Co)-sulfide polyhedrons (CFA@HCS) is designed. Typical 3D interconnected carbon fibers derived from bamboo cellulose fiber aerogel serve as a skeleton to support the Co9S8 with a hollow structure. The electromagnetic parameters of the composite are effectively modified by combining the carbon-based skeleton with the hollow Co9S8. The coupling interaction of the electromagnetic characteristics at low frequency can be significantly improved. Accordingly, the minimum reflection loss (RLmin) of CFA@HCS with 15 wt% filler loading reaches −53.6 dB at 3.36 GHz and its effective absorption bandwidth can cover almost all the S and C bands (3.04–8 GHz). In addition, the minimum reduction of the radar cross section (RCS) reaches –22.6 dB m2 when the incidence theta is −60°. This work demonstrates that low-frequency EMW absorption could be improved by constructing hierarchical composites of carbon fiber/transition metal sulfide.
KW - Carbon fibers aerogel
KW - Electromagnetic wave absorption
KW - Hierarchical structure
KW - Hollow CoS
KW - Low frequency
UR - http://www.scopus.com/inward/record.url?scp=85153799084&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2023.143122
DO - 10.1016/j.cej.2023.143122
M3 - Journal article
AN - SCOPUS:85153799084
SN - 1385-8947
VL - 466
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 143122
ER -