Interface engineering by redox reaction on ferrites to prepare efficient electromagnetic wave absorbers

作     者：Ming Qin Qianxu Ye Xiaoming Cai Jinming Cai Hongjing Wu Ming Qin;Qianxu Ye;Xiaoming Cai;Jinming Cai;Hongjing Wu

作者机构：Faculty of Materials Science and EngineeringKunming University of Science and TechnologyKunming 650093China Faculty of Mechanical and Electrical EngineeringKunming University of Science and TechnologyKunming 650500China MOE Key Laboratory of Material Physics and Chemistry Under ExtraordinarySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072China Southwest United Graduate SchoolKunming 650092China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2024年第188卷第21期

页      面：1-10页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(No.22372074) the Yunnan Fundamental Research Projects(No.202101AV070008) the Major Basic Research Project of Science and Technology of Yunnan(No.202302AG050007) Yunnan Innovation Team of Graphene Mechanism Research and Application Industrialization(No.202305AS350017) Graphene Application and Engineering Research Center of Education Department of Yunnan Providence(No.KKPP202351001) 

主　　题：Electromagnetic wave absorption Redox reaction Interfacial engineering Spinel ferrite 

摘      要：Preparation of electromagnetic(EM)wave-absorbing composites by interface engineering has been the main strategy to obtain high-performance ***,the conventional strategy is tedious and time-consuming,which hinders the scalable synthesis of stable EM wave-absorbing ***,interface engineering by a redox reaction between transition metal elements in Co-based spinel ferrites was employed to create EM wave-absorbing composites to solve the above *** serial M Co_(2)O_(4)(M=Ni,Cu,and Zn)spinel ferrites,redox reactions during synthesis only occurred between Cu and Co elements,thus leading to the presence of multiple crystal phases on final *** the aid of increased polyethylene glycol(PEG)molecular weight(MW),more heterogenous interfaces between CuO and CuCo_(2)O_(4)phases as well as induced crystal defects were *** synergetic interface engineering by means of PEG-assisted redox reaction,interfacial polarization,and defect-induced polarization loss were markedly enhanced on a CuCo_(2)O_(4)-based sample that was prepared with PEG MW of 100 *** effective absorption bandwidth of the corresponding sample could reach 6.48 GHz(11.52–18 GHz)with a thickness of 2.28 *** short,this work provides a novel strategy for designing EM wave absorbing composites by interface engineering through redox reaction instead of the conventional composition coupling process.