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<p>Heterojunction and morphology control assume a significant part in adjusting the intrinsic electromagnetic properties of absorbers to acquire outstanding microwave absorption (MA) performance, but this still faces huge challenges. Herein, FeS<sub>2</sub>/C/MoS<sub>2</sub> composite with core–shell structure was successfully designed and prepared via a multi-interface engineering. MoS<sub>2</sub> nanosheets with 1T and 2H phases are coated on the outside of FeS<sub>2</sub>/C to form a porous interconnected structure that can optimize the impedance matching characteristics and strengthen the interfacial polarization loss capacity. Remarkably, as-fabricated FCM-3 harvests a broad effective absorption bandwidth (EAB) of 5.12&#xa0;GHz and a minimum reflection loss (RL<sub>min</sub>) value of −45.1&#xa0;dB. Meanwhile, FCM-3 can accomplish a greatest radar cross section (RCS) reduction value of 18.52&#xa0;dB&#xa0;m<sup>2</sup> when the detection angle is 0°. Thus, the convenient computer simulation technology (CST) simulations and encouraging accomplishments provide a novel avenue for the further development of efficient and lightweight MA materials.</p> Graphical abstract <p></p>

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Multi-interface engineering of FeS2/C/MoS2 with core–shell structure for superior microwave absorption performance

  • 期刊论文

  • 发表日期：

    2025年3月3日

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  • Pan-Pan Zhou,
  • Cheng-Yao Hu,
  • Shi-Lin Yuan,
  • Jian-Cheng Zhao,
  • Ya-Wei Kuang,
  • Han Gu,
  • Yu-Shen Liu,
  • Li-Xi Wang,
  • Qi-Tu Zhang

摘要

Heterojunction and morphology control assume a significant part in adjusting the intrinsic electromagnetic properties of absorbers to acquire outstanding microwave absorption (MA) performance, but this still faces huge challenges. Herein, FeS2/C/MoS2 composite with core–shell structure was successfully designed and prepared via a multi-interface engineering. MoS2 nanosheets with 1T and 2H phases are coated on the outside of FeS2/C to form a porous interconnected structure that can optimize the impedance matching characteristics and strengthen the interfacial polarization loss capacity. Remarkably, as-fabricated FCM-3 harvests a broad effective absorption bandwidth (EAB) of 5.12 GHz and a minimum reflection loss (RLmin) value of −45.1 dB. Meanwhile, FCM-3 can accomplish a greatest radar cross section (RCS) reduction value of 18.52 dB m2 when the detection angle is 0°. Thus, the convenient computer simulation technology (CST) simulations and encouraging accomplishments provide a novel avenue for the further development of efficient and lightweight MA materials.

Graphical abstract