Developing ultrabroad radar-infrared compatible stealth materi-als has turned into a research hotspot,which is still a problem to be solved.Herein,the copper sulfide wrapped by reduced graphene oxide to obtain three-dimensional(3D)porous network composite aerogels(CuS@rGO)were syn-thesized via thermal reduction ways(hydrothermal,ascorbic acid reduction)and freeze-drying strategy.It was discovered that the phase components(rGO and CuS phases)and micro/nano structure(microporous and nanosheet)were well-modified by modulating the additive amounts of CuS and changing the reduction ways,which resulted in the variation of the pore structure,defects,complex permittivity,microwave absorption,radar cross section(RCS)reduc-tion value and infrared(IR)emissivity.Notably,the obtained CuS@rGO aero-gels with a single dielectric loss type can achieve an ultrabroad bandwidth of 8.44 GHz at 2.8 mm with the low filler content of 6 wt％by a hydrothermal method.Besides,the composite aerogel via the ascorbic acid reduction realizes the minimum reflection loss(RLmin)of-60.3 dB with the lower filler content of 2 wt％.The RCS reduction value can reach 53.3 dB m2,which effectively reduces the probability of the target being detected by the radar detector.Furthermore,the laminated porous architecture and multicomponent endowed composite aerogels with thermal insulation and IR stealth versatility.Thus,this work offers a facile method to design and develop porous rGO-based composite aerogel absorbers with radar-IR compatible stealth.

Yue Wu;Yue Zhao;Ming Zhou;Shujuan Tan;Reza Peymanfar;Bagher Aslibeiki;Guangbin Ji

College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,People's Republic of China;Department of Chemical Engineering,Energy Institute of Higher Education,Saveh,Iran;Faculty of Physics,University of Tabriz,Tabriz 51666-16471,Iran

纳微快报（英文）

[1]Yue Wu;Yue Zhao;Ming Zhou;Shujuan Tan;Reza Peymanfar;Bagher Aslibeiki;Guangbin Ji-.Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels)[J].纳微快报（英文）,2022(11):1-17

Ultrabroad,ultrabroad

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