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Research Article | Open Access

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

Zongsheng Chen1,2, Yahui Wang1,2 (), Yi Liu1,2, Zhigang Li1,2, Xiangyin Lv1,2, Liping Liu1,2, Yajing Chang1,2, Jiaming Shi1,2, Xiao Zhang3 ()
State Key Laboratory of Pulsed Power Laser Technology, School of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
Anhui Provincial Laboratory of Advanced Laser Technology, School of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
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
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The hollow structure and tailorable compositional coupling effect in Mo2C/C composites achieve broadband response and strong electromagnetic attenuation.

Abstract

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.

Keywords

electromagnetic absorptionMo2C/Cmicrowave absorptionhollow structure

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Nano Research
Volume 18 Issue 1,
January 2025
Article number: 94907034
DOI: 10.26599/NR.2025.94907034
Cite this article:
Chen Z, Wang Y, Liu Y, et al. Hierarchical hollow microspheres assembled from carbon nanosheets integrated with molybdenum carbide nanoparticles for boosting microwave absorption properties. Nano Research, 2025, 18(1): 94907034. https://doi.org/10.26599/NR.2025.94907034
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