编号：CDUT-2023-24

标题：Construction of heterointerfaces and honeycomb-like structure for ultrabroad microwave absorption

入藏号：WOS:000840973600002

中国科学院文献情报中心期刊分区： 化学1区/TOP（2022）

本校作者：何永超；王益群*；任良贵；吴丹；邓双林

来源出版物：JOURNAL OF COLLOID AND INTERFACE SCIENCE  卷: 627  页: 102-112 

出版年：2022

第一地址： 成都理工大学

关键词：Porous structure；Multiple interfaces；Ultrabroad absorption；Microwave absorption

代表图：

摘要：Heterointerface design is an effective strategy to improve the effective absorption bandwidth in electromagneticwave EMW absorbing materials. In this paper, honeycomb-like Fe-doped tremella carbide composites(FCT) with a large number of heterogeneous interfaces were obtained by in-situ construction ofmultiphase composite particles (Fe3C, Fe3O4, and a-Fe) during the carbonization process. The effects of Fedoping on the phase, structure, morphology, and absorption properties of FCT were investigated. Theresults show that the porous structure and the heterogeneous interface can significantly improve theelectromagnetic wave absorption performance of FCT. Iron doping introduces a heterogeneous multiphasestructure into FCT, which increases the interfacial loss and magnetic loss of the material, therebyimproving the overall impedance matching of the material. FCT-4 composite exhibited excellent microwaveattenuation capability with a reflection loss of _34.6 dB. Simultaneously, the widest effectiveabsorption bandwidth is up to 8.84 GHz (9.16–18 GHz) with a matching thickness of 2.8 mm, which coversalmost the entire X (8–12 GHz) and Ku (12–18 GHz) bands. Thus, this paper provides an effectivestrategy for the preparation of excellent electromagnetic wave absorbing materials by in situ construction of heterointerfaces.

文章链接地址: https://www.sciencedirect.com/science/article/pii/S0021979722012231?via%3Dihub