Multifunctional WSe_(2)/Co_(3)C composite for efficient electromagnetic absorption, EMI shielding, and energy conversion

作     者：Yuhang Zhu Tingting Liu Lin Li Maosheng Cao 

作者机构：School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Key Laboratory for Photonic and Electronic Bandgap MaterialsMinistry of EducationSchool of Physics&Electron EngineeringHarbin Normal UniversityHarbin 150025China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2024年第17卷第3期

页      面：1655-1665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）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supports come from the National Natural Science Foundation of China(Nos.52373280,52177014,51977009,and 12074095) the Heilongjiang Provincial Science Foundation for Distinguished Young Scholars(No.JQ2022A002) the 2020 Central Government’s plan to support the Talent Training Project of the Reform and Development Fund of Local Universities(No.2020YQ02). 

主　　题：WSe_(2) Co_(3)C electromagnetic property microwave absorption electromagnetic interference shielding energy conversion 

摘      要：Currently,as the electromagnetic(EM)environment becomes increasingly complex,single-function EM materials can hardly resist the increasing electromagnetic interference(EMI),and there is an urgent need to develop multifunctional EM materials.In this work,multifunctional WSe_(2)/Co_(3)C was prepared by simple hydrothermal methods.Its dielectric performance and EM response were investigated.Efficient absorption,shielding performance,and energy conversion devices were customized.By tailoring the loading content,WSe_(2)/Co_(3)C can switch between EM absorption and EMI shielding.The maximum shielding effectiveness(SE)of WSe_(2)/Co_(3)C reached 36 dB,and high reflection loss(RL)of-60.28 dB and wide effective absorption bandwidth(EAB)of 6.16 GHz can be obtained at low thickness.The multiple EM attenuation mechanisms brought by the combination of two-dimensional(2D)WSe_(2) and magnetic Co_(3)C are considered to be the main reason for the enhanced EM attenuation ability.The WSe_(2)/Co_(3)C composite provides a viable candidate for developing multifunctional EM materials in 2–18 GHz.