NiCoZn/C@melamine sponge-derived carbon composites with highperformance electromagnetic wave absorption  

作　　者：Xiubo Xie Heshan Wang Hideo Kimura Cui Ni Wei Du Guanglei Wu 

机构地区：[1]School of Environmental and Material Engineering,Yantai University,Yantai 264005,China [2]Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta,Shandong University of Aeronautics,Binzhou 256603,China [3]Institute of Materials for Energy and Environment,State Key Laboratory of Bio-fibers and Eco-textiles,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2024年第10期2274-2286,共13页矿物冶金与材料学报（英文版）

基　　金：supported by research pro-grams of National Natural Science Foundation of China(Nos.52101274 and 52377026);Natural Science Foundation of Shandong Province,China(Nos.ZR2020QE011 and ZR2022ME089);Taishan Scholars and Young Experts Pro-gram of Shandong Province,China(No.tsqn202103057);the Qingchuang Talents Induction Program of Shandong Higher Education Institution,China(Research and Innovation Team of Structural-Functional Polymer Composites);Special Fin-ancial of Shandong Province,China(Structural Design of High-efficiency Electromagnetic Wave-absorbing Composite Materials and Construction of Shandong Provincial Talent Teams),Youth Top Talent Foundation of Yantai University(No.2219008);Graduate Innovation Foundation of Yantai University(No.GIFYTU2240);College Student Innovation and Entrepreneurship Training Program Project(No.202311066088).

摘　　要：NiMZn/C@melamine sponge-derived carbon(MSDC)composites(M=Co,Fe,and Mn)were prepared by a vacuum pump-ing solution method followed by carbonization.A large number of carbon nanotubes(CNTs)homogeneously attached to the surfaces of the three-dimensional cross-linked of the sponge-derived carbon in the NiCoZn/C@MSDC composite,and CNTs were detected in the NiFeZn/C@MSDC and NiMnZn/C@MSDC composites.Ni_(3)ZnC_(0.7),Ni_(3)Fe,and MnO in-situ formed in the NiFeZn/C@MSDC and NiMnZn/C@MSDC composites.The CNTs in the NiCoZn/C@MSDC composite efficiently modulated its complex permittivity.Thus,the composite exhibited the best performance among the composites,with the minimum reflection loss(RL_(min))of-33.1 dB at 18 GHz and thickness of 1.4 mm.The bandwidth for RL of≤-10 dB was up to 5.04 GHz at the thickness of 1.7 mm and loading of 25wt%.The op-timized impedance matching,enhanced interfacial and dipole polarization,remarkable conduction loss,and multiple reflections and scat-tering of the incident microwaves improved the microwave absorption performance.The effects of Co,Ni,and Fe on the phase and mor-phology provided an alternative way for developing highly efficient and broadband microwave absorbers.

关 键 词：microwave absorption carbon nanotube element substitution melamine sponge-derived carbon 

分 类 号：TB332[一般工业技术—材料科学与工程]