Abstract
Effective electromagnetic wave absorption is now possible thanks to the design of the dielectric-magnetic double loss mechanism and the rich heterogeneous structure.In this study,hollow carbon spheres with rich heterostructures were synthesized using an easy and effective in situ growing approach.In addition to improving impedance matching,the hollow structure also reduces material density and weight.By modifying the load,this system can alter the dielectric characteristics of MXene,which in turn affects the sample's ability to absorb electromagnetic waves.MXene and the carbon material create a thick con-ductive network during the whole electromagnetic wave absorption process,creating the ideal environ-ment for conduction loss.The sample's ability to attenuate electromagnetic waves is further improved by the interfacial polarization that the rich heterogeneous structure can produce.Co-magnetic nanoparticle nanoparticles are the main source of magnetic loss.The MXene@Co/C-100-800(MCC-100-800)exhibits excellent electromagnetic wave absorption performance under the synergy of multiple loss mechanisms,with the maximum effective absorption bandwidth(EABmax)reaching 7.20 GHz and the minimum reflec-tion loss(RLmin)being-53.99 dB at 2.10 mm.Finally,this work is guided by the coating engineering of MXene and provides new ideas for the rational design of heterostructures of nanomaterials.
基金项目
National Natural science Foundation of China(52377026)
National Natural science Foundation of China(52301192)
Taishan Scholars and Young Experts Program of Shandong Province(tsqn202103057)
Qingchuang Talents Induction Program of Shandong Higher Education Institution()
Special Financial of Shandong Province()
NETL
NSTL
万方数据