物理化学学报

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Ti3C2Tx@CoS2复合材料中的电磁协同效应对卓越微波吸收性能的影响

杨非凡1, 范聪敏1, 王越2, 陈洁1, 高雨彤1, 何秦川1, 王益群1,3   

  1. 1 成都理工大学材料与化学化工学院, 四川 成都 610059;
    2 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002;
    3电子科技大学电磁辐射控制材料国家工程研究中心, 四川 成都 611731
  • 收稿日期:2026-05-05 修回日期:2026-07-27 录用日期:2026-07-30
  • 通讯作者: 王益群, 范聪敏 E-mail:wangyiqun17@cdut.edu.cn;congmin@mail.ustc.edu.cn
  • 基金资助:
    本文作者感谢国家自然科学基金(52202047)、四川省科技计划(2025ZNSFSC1387)以及电磁辐射控制材料国家工程研究中心开放基金(KPKFJJ2026004-3)的资助。

Electromagnetic synergistic effects in Ti3C2Tx@CoS2 composites for superior microwave absorption performance

Feifan Yang1, Congmin Fan1, Yue Wang2, Jie Chen1, Yutong Gao1, Qinchuan He1, Yiqun Wang1,3   

  1. 1 College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan Province, China;
    2 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China;
    3 National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan Province, China
  • Received:2026-05-05 Revised:2026-07-27 Accepted:2026-07-30
  • Contact: Yiqun Wang, Congmin Fan E-mail:wangyiqun17@cdut.edu.cn;congmin@mail.ustc.edu.cn

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补充材料

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摘要： MXene因其独特的类手风琴结构和表面丰富的官能团，可作为电磁吸收(EMA)材料的基体。然而，MXene的固有局限性不利于实现阻抗匹配，需将其与其他吸波材料复合以增强吸波性能。本研究采用简便的水热法成功制备了Ti3C2Tx@CoS2复合材料。CoS2纳米颗粒(NPs)原位掺入MXene中，构建了耦合良好的电磁网络，有效调控了介电响应并优化了阻抗匹配。当MCS-3复合材料厚度为2.08 mm时，其最小反射损耗(RLmin)达到−54.036 dB，最大有效吸收带宽(EABmax)达到5.28 GHz。同时，雷达散射截面(RCS)模拟结果表明，MCS-3具有优异的雷达波衰减能力，衰减值达24.49 dB m2。这表明其在军事隐身领域具有巨大的应用潜力。该材料通过介电损耗、磁损耗、界面极化与多重反射的协同效应增强了EMA性能。本研究为开发高效可调的MXene基EMA材料提供了思路。

关键词: Ti3C2Tx, CoS2, 电磁耦合网络, 界面极化

Abstract: MXene, due to its unique accordion-like structure and abundant functional groups on its surface, can serve as the matrix for electromagnetic absorption (EMA) materials. However, the inherent limitations of pure MXene do not facilitate impedance matching, and it is necessary to composite MXene with other absorbing materials to enhance the absorbing performance. In this study, Ti3C2Tx@CoS2 composites were successfully fabricated through a facile hydrothermal method. In situ incorporation of CoS2 nanoparticles (NPs) onto MXene established a well-coupled electromagnetic network, which effectively regulated the dielectric response and optimized impedance matching. The MCS-3 achieved a minimum reflection loss (RLmin) of -54.04 dB at a thickness of 2.08 mm and a maximum effective absorption bandwidth (EABmax) of 5.28 GHz. Meanwhile, the radar cross-section (RCS) simulation results show that the MCS-3 has excellent radar wave attenuation capability, with an attenuation value of 24.49 dB m2. This indicates that it has great potential for application in the military stealth field. It enhances the EMA performance through the synergistic effects of dielectric loss, magnetic loss, interfacial polarization and multiple reflections. This study provides guiding insights for the development of efficient and tunable MXene-based EMA materials.

Key words: Ti3C2Tx, CoS2, Electromagnetic coupling network, Interfacial polarization