MOF-introduced Cu2Se/CoSe2 and carbon nanofibers: Complementary regulation of dielectric loss for enhanced electromagnetic wave absorption

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-09-16 DOI:10.1016/j.diamond.2025.112842

Yue Sun , Yanxiang Wang , Yingfan Li , Shichao Dai , Bohan Ding , Jinghe Guo , Yanru Yuan , Dong Zhang , Dongming Liu

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引用次数: 0

Abstract

Carbon nanofibers (CNFs) are widely used as electromagnetic wave (EMW) absorbing materials because of their excellent electrical conductivity, but their excessively high conductivity hinders EMWs from penetrating the interior of the material and being dissipated. In this work, bimetallic precursors were introduced into CNFs via MOF-on-MOF methods, and Cu₂Se/CoSe₂@CNFs composites were obtained through selenization treatment. MOFs and CNFs complement each other by balancing polarization loss and conductive loss to achieve optimal impedance matching. The electromagnetic parameters were tuned by varying the MOF loading amount. Cu₂Se/CoSe₂@CNF-2 achieved a minimum reflection loss of −40.74 dB at a thickness of 1.49 mm. In the RCS simulation, Cu₂Se/CoSe₂@CNF-2 demonstrated the best stealth performance. This study offers a new strategy for enhancing the performance of EMW absorbing materials through the complementary loss functions between MOF derivatives and CNFs.

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mof引入的Cu2Se/CoSe2和碳纳米纤维：增强电磁波吸收的介电损耗互补调节

纳米碳纤维由于其优异的导电性被广泛用作电磁波吸收材料，但其过高的导电性阻碍了电磁波穿透材料内部并消散。本研究通过MOF-on-MOF方法将双金属前驱体引入CNFs中，并通过硒化处理得到Cu2Se/CoSe2@CNFs复合材料。mof和CNFs相互补充，平衡极化损耗和导电损耗，实现最佳阻抗匹配。通过改变MOF的加载量来调节电磁参数。在厚度为1.49 mm时，Cu2Se/CoSe2@CNF-2的最小反射损耗为−40.74 dB。在RCS仿真中，Cu2Se/CoSe2@CNF-2显示了最佳的隐身性能。本研究提供了一种通过MOF衍生物和CNFs之间的互补损失函数来提高EMW吸收材料性能的新策略。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.