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- Title
Nitrogen-doped core–shell Fe/Fe<sub>3</sub>C@C nanocomposites for electromagnetic wave absorption.
- Authors
Yang, Yue; Qian, Chen; Hu, Puqi; Yang, Wentong; He, Zimo; Dong, Yubing; Fu, Yaqin; Zhu, Yaofeng
- Abstract
Magnetic-activated carbon-based nanocomposites with core–shell structure have attracted wide attention in electromagnetic wave absorption (EMA) field. In this work, Fe/Fe3C@C nanocomposites with a core–shell structure were prepared by solvothermal synthesis and high-temperature carbonization process. The formed heterogeneous structure of Fe/Fe3C@C nanocomposite is conducive to improving its polarization loss capability. The Fe/Fe3C@C nanocomposites exhibit efficient EMA performance, the minimum reflection loss (RL) is − 22.08 dB at 13.85 GHz, and the effective absorption bandwidth (RL ≤ − 10 dB) reaches 5.50 GHz (11.75–17.25 GHz) with a thickness of 2.3 mm. The high-efficiency EMA performance is attributed to the synergistic effects of well-matched impedance characteristics and heterogeneous structure. This work may provide a kind of novel insights into the preparation of broadband EMA materials by optimization of structure and composition.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 27, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11263-3