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, Xiaoli Zhang · 发表于：Nano Research · 年份：2024 · DOI：10.26599/nr.2025.94907034 · 被引用次数：17 · 研究领域：Electromagnetic wave absorption materials

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 Mo 2 C/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 Mo 2 C/C microspheres with compositional optimization and heterogeneous structures have broad prospects for practical applications.