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Nitrogen-doped core–shell Fe/Fe3C@C nanocomposites for electromagnetic wave absorption

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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.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by the National Natural Science Foundation of China (Grant No. 52373272) and the Natural Science Foundation of Zhejiang Province, China (Grant No. LY19E030009)

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Authors and Affiliations

  1. Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, People’s Republic of China

    Yue Yang, Chen Qian, Puqi Hu, Wentong Yang, Zimo He, Yubing Dong, Yaqin Fu & Yaofeng Zhu

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  1. Yue Yang
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  2. Chen Qian
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  8. Yaofeng Zhu
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Contributions

YY contributed toward conceptualization, software, Writing—original draft. CQ contributed toward visualization. PH contributed toward formal analysis. WY contributed toward data Curation. ZH contributed toward investigation. YD contributed toward validation. YF contributed toward resources and supervision. YZ contributed toward methodology, writing—review & editing, supervision, and project administration.

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Correspondence to Yaofeng Zhu.

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Yang, Y., Qian, C., Hu, P. et al. Nitrogen-doped core–shell Fe/Fe3C@C nanocomposites for electromagnetic wave absorption. J Mater Sci: Mater Electron 34, 1847 (2023). https://doi.org/10.1007/s10854-023-11263-3

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