Promoting the microwave absorption performance of hierarchical CF@NiO/Ni composites via phase and morphology evolution

作     者：Shipeng Wang Ziyan Liu Qiangchun Liu Baojun Wang Wei Wei Hao Wu Zijie Xu Shikuo Li Fangzhi Huang Hui Zhang Wang Shipeng;Liu Ziyan;Liu Qiangchun;Wang Baojun;Wei Wei;Wu Hao;Xu Zijie;Li Shikuo;Huang Fangzhi;Zhang Hui

作者机构：School of Materials Science and EngineeringAnhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid MaterialsMinistry of EducationAnhui UniversityHefei 230601China School of Chemistry and Chemical EngineeringAnhui UniversityHefei 230601China School of Physics and Electronic InformationHuaibei Normal UniversityHuaibei 235000Chin 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2023年第30卷第3期

页      面：494-503页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51872002 and 52172174) the key research and development projects in Anhui province,China(No.202004a07020026) 

主　　题：carbon fiber nickel nickel oxide interfacial polarization microwave absorption 

摘      要：Lightweight and efficient carbon-based microwave absorbents are significant in addressing the increasing severity of electromagnetic *** this study,hierarchical NiO/Ni nanosheets with a tuneable phase and morphology supported on a carbon fiber substrate(CF@NiO/Ni)were fabricated using a hydrothermal approach and post-annealing *** the annealing temperature increases,more metallic Ni is formed,and an apparent porosity appears on the sheet *** from the advantages of a three-dimensional(3D)conducting network,hierarchical porous structure,reinforced dipole/interface polarization,multiple scattering,and good impedance matching,the CF@NiO/Ni-500 composite exhibits an excellent microwave absorption performance even at a filling rate of only 3wt%.Specifically,its minimal reflection loss is-43.92 dB,and the qualified bandwidth is up to 5.64 *** addition,the low radar cross-section area of the CF@NiO/Ni composite coating confirms its strong ability to suppress electromagnetic wave *** expect that this work could contribute to a deeper understanding of the phase and morphology evolution in enhancing microwave absorption.