Hierarchical hollow microspheres assembled from carbon nanosheets integrated with molybdenum carbide nanoparticles for boosting microwave absorption properties  

作　　者：Zongsheng Chen Yahui Wang Yi Liu Zhigang Li Xiangyin Lv Liping Liu Yajing Chang Jiaming Shi Xiao Zhang 

机构地区：[1]State Key Laboratory of Pulsed Power Laser Technology,School of Electronic Engineering,National University of Defense Technology,Hefei 230037,China [2]Anhui Provincial Laboratory of Advanced Laser Technology,School of Electronic Engineering,National University of Defense Technology,Hefei 230037,China [3]Centre for Environmental and Energy Nanomaterials,Anhui Key Laboratory of Nanomaterials and Nanotechnology,CAS Centre for Excellence in Nanoscience,Institute of Solid State Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China

出　　处：《Nano Research》2025年第1期10-20,共11页纳米研究（英文版）

基　　金：supported by the National University of Defense Technology Independent Innovation Science Fund(No.24-ZZCXJDZ-42);the Postdoctoral Fellowship Program of CPSF(No.GZC20241747).

摘　　要：Hierarchical hollow structure has demonstrated potential for enhancing electromagnetic(EM)attenuation and improving impedance matching,garnering significant attention for researching.Herein,we have successfully implemented compositional and structural engineering to fabricate hollow Mo2C/C microspheres with controllable composition by coupling interaction between dopamine hydrochloride and ammonium molybdate.With the synergistic effect of composition and hollow structure,the strongest reflection loss intensity and broadest effective absorption of the optimized sample reach-70.2 dB and 6.2 GHz,respectively.The formation of hollow heterogeneous structures not only favors impedance matching feature,but also generates considerable contribution to EM attenuation capacity.Furthermore,radar cross-section simulation data indicate that hollow Mo2C/C microspheres with compositional optimization and heterogeneous structures have broad prospects for practical applications.

关 键 词：electromagnetic absorption Mo2C/C microwave absorption hollow structure 

分 类 号：TB383[一般工业技术—材料科学与工程]