文献类型：期刊文献

英文题名：Construction of Co/C@MoS2 core-shell nanocubes with enhanced electromagnetic-wave absorption performance

作者：Wang, Yizhe[1,2,3];Xu, Jian[1,2];He, Peng[1,2];Liu, Xiaoyun[1,2];Zuo, Peiyuan[1,2];Ma, Wenjun[1,2];Zhuang, Qixin[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Adv Polymer Mat Shanghai, Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related Tec, Minist Educ, Shanghai 200237, Peoples R China;[3]Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Qinghai, Peoples R China

年份：2022

卷号：905

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20220711630565);WOS:【SCI-EXPANDED(收录号:WOS:000779722200002)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (51773060, 52073091, 22171086) and Key Laboratory of Advanced Polymer Materials of Shanghai.

语种：英文

外文关键词：Core-shell; Impedance matching; Synergetic contribution; Electromagnetic wave absorption

摘要：This investigation is aimed at obtaining superior electromagnetic wave (EMW) absorbers and we successfully prepared the core-shell-structured Co/C@MoS2 nanocubes comprising Co/C nanocubes tightly coated with uniform MoS2 nanosheets for the first time. The MoS2 nanoshells of the Co/C@MoS2 enabled the optimization of the impedance matching and generation of dipolar polarizations. The Co/C cores also increased the conductivity of the resultant Co/C@MoS2 composites, thus promoting the attenuation ability of the EMW. The synergetic contributions of improved impedance matching and multiple loss mechanisms led to excellent EMW absorption of the Co/C@MoS2. In particular, the reflection loss of the Co/C@MoS2 reached - 52.76 dB at 8.88 GHz for a 2.5-mm-thick absorber while the effective attenuation bandwidth under - 10 dB was 3.84 GHz for a 1.5-mm-thick absorber. Accordingly, the prepared Co/C@MoS2 with enhanced absorption performance is a promising absorber and we also proposed a facile design and synthesis strategy for new EMW absorbers in this paper. (c) 2022 Elsevier B.V. All rights reserved.