物理化学学报 >> 2026, Vol. 42 >> Issue (8): 100305.doi: 10.1016/j.actphy.2026.100305

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微波辅助构筑Ta2CTx MXene/CuInS2异质结构增强介电损耗和宽频电磁波吸收性能

张帅1, 李海丰2, 张世杰1,*(), 王顺1,*(), 杜苏轩1, 赵志伟1,*(), 赵小苗1, 梁笑微1   

  1. 1 河南工业大学材料科学与工程学院, 河南 郑州 450001
    2 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002
  • 收稿日期:2026-03-08 修回日期:2026-04-12 录用日期:2026-04-16 发布日期:2026-06-11
  • 通讯作者: Email: zsj562389@sina.com (张世杰)shun_wang@haut.edu.cn (王顺)zzw3217@163.com (赵志伟)

Microwave assisted construction of Ta2CTx MXene/CuInS2 heterostructures toward enhanced dielectric loss and broadband electromagnetic wave absorption

Shuai Zhang1, Haifeng Li2, Shijie Zhang1,*(), Shun Wang1,*(), Suxuan Du1, Zhiwei Zhao1,*(), Xiaomiao Zhao1, Xiaowei Liang1   

  1. 1 School of Material Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan Province, China
    2 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
  • Received:2026-03-08 Revised:2026-04-12 Accepted:2026-04-16 Published:2026-06-11
  • Contact: Email: zsj562389@sina.com (Shijie Zhang)shun_wang@haut.edu.cn (Shun Wang)zzw3217@163.com (Zhiwei Zhao)

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摘要：

MXene在电磁波吸收领域的应用日益广泛。为挖掘更多MXene类型的潜力，本研究通过HF蚀刻成功合成了Ta2CTx MXene，并利用微波辅助化学合成系统制备了一系列Ta2CTx MXene/CuInS2复合材料。实验表明：在2.9 mm厚度、50 wt%填料负载量的条件下，Ta2CTx样品的最小反射损耗达到−27.61 dB，有效吸收带宽为0.08 GHz；而同等填料负载下，Ta2CTx MXene/CuInS2-50复合材料在更薄的1.5 mm厚度处表现出显著更优的4.48 GHz有效吸收带宽。这种性能提升归因于CuInS2的引入改善了阻抗匹配并增强了介电损耗。此外，两组分形成的多层片状结构构建了连续导电网络，通过多重反射和导电损耗有效耗散了电磁能量。本研究为开发基于Ta2CTx MXene的高效吸波材料提供了可行策略。

关键词: Ta2CTx MXene, CuInS2, 电磁波吸收, 雷达散射截面, 复合材料

Abstract:

The application of MXene in the electromagnetic wave absorption (EWA) field has been increasingly extensive. To explore the potential of more MXene types, this study has successfully synthesized Ta2CTx MXene via HF etching and subsequently prepared a series of Ta2CTx MXene/CuInS2 composites using a microwave-assisted chemical synthesis system. The Ta2CTx sample has demonstrated an optimal minimum reflection loss (RLmin) of −27.61 dB with an effective absorption bandwidth (EAB) of 0.8 GHz at a thin thickness of 2.9 mm and a 50 wt% filler loading. In contrast, the Ta2CTx MXene/CuInS2-50 composite has exhibited a significantly superior EAB of 4.48 GHz at a thinner thickness of 1.5 mm under the same filler loading condition. This enhanced performance has been attributed to the improved impedance matching and increased dielectric loss contributed by the incorporation of CuInS2. Furthermore, the multilayered sheet-like structure formed by the two components has established a continuous conductive network, which has effectively dissipated electromagnetic energy through multiple reflections and conductive loss. Ultimately, this work has provided a viable strategy for developing high-efficiency absorbers based on Ta2CTx MXene materials.

Key words: Ta2CTx MXene, CuInS2, Electromagnetic wave absorption, Radar cross section, Composite Materials