Multi-topological network engineering of Co/MnO composites for electromagnetic wave absorption

IF 14.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Science & Technology Pub Date : 2025-04-01 DOI:10.1016/j.jmst.2025.03.015

Zixuan Wang, Zirui Jia, Junwen Ren, Li Wang, Di Lan, Siyuan Zhang, Xuetao Shi, Xuehua Liu, Zhenguo Gao, Guanglei Wu

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Abstract

The study of delicate nano-topological structures has been a prominent area of research, largely due to the distinctive electromagnetic characteristics of this structure. However, the relationship between topological transformations, material properties, and electromagnetic wave (EMW) absorption performance remains insufficiently understood. In this study, a series of carbon fiber-based Co/MnO nanocomposites is derived from Co/Mn bimetal Prussian blue analogs encapsulated in polymer nanofiber networks by electrospinning. It has been demonstrated that various topological shapes can be modulated by modulating surfactants, thereby changing the degree of graphitization and electrical conductivity. The optimized spherical precursor composite carbon fiber exhibits superior EMW absorption capability with minimum reflection loss (RL_min) of −58.15 dB with a thickness of 2.3 mm. Moreover, ultrabroad effective absorption bandwidth (EAB) as large as 8.96 GHz is obtained. This work offers a significant contribution to the field of topology, while also promoting the development of manganese-based microwave-absorbing materials (MAMs) with enhanced electromagnetic absorption properties.

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Co/MnO电磁波吸收复合材料的多拓扑网络工程

精细纳米拓扑结构的研究一直是一个突出的研究领域，很大程度上是由于这种结构独特的电磁特性。然而，拓扑变换、材料特性和电磁波（EMW）吸收性能之间的关系仍然没有得到充分的了解。在本研究中，通过静电纺丝将Co/Mn双金属普鲁士蓝类似物包裹在聚合物纳米纤维网络中，得到了一系列碳纤维基Co/MnO纳米复合材料。已经证明，各种拓扑形状可以通过调制表面活性剂来调节，从而改变石墨化程度和导电性。优化后的球形前驱体复合碳纤维具有优异的EMW吸收性能，反射损耗最小（RLmin）为−58.15 dB，厚度为2.3 mm。获得了8.96 GHz的超远有效吸收带宽（EAB）。这项工作为拓扑学领域做出了重大贡献，同时也促进了具有增强电磁吸收性能的锰基微波吸收材料（MAMs）的发展。

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来源期刊

Journal of Materials Science & Technology 工程技术-材料科学：综合

CiteScore

20.00

自引率

11.00%

发文量

995

审稿时长

13 days

期刊介绍： Journal of Materials Science & Technology strives to promote global collaboration in the field of materials science and technology. It primarily publishes original research papers, invited review articles, letters, research notes, and summaries of scientific achievements. The journal covers a wide range of materials science and technology topics, including metallic materials, inorganic nonmetallic materials, and composite materials.