Microwave-assisted synthesis of graphene-Ni composites with enhanced microwave absorption properties in Ku-band

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	Microwave-assisted synthesis of graphene-Ni composites with enhanced microwave absorption properties in Ku-band
	Z. T. Zhu; X. Sun; G. X. Li; H. R. Xue; H. Guo; X. L. Fan; X. C. Pan; J. P. He
	2015
发表期刊	Journal of Magnetism and Magnetic Materials
ISSN	0304-8853
卷号	377 页码:95-103
摘要	Recently, graphene has been applied as a new microwave absorber because of its high dielectric loss and low density. Nevertheless, the high dielectric constant of pristine graphene has caused unbalanced electromagnetic parameters and results in a bad impedance matching characteristic. In this study, we report a facile microwave assisted heating approach to produce reduced graphene oxide nickel (RGONi) composites. The phase and morphology of as synthesized RGO-Ni composites are characterized by XRD, Raman, FESEM and TEM. The results show that Ni nanoparticles with a diameter around 20 nm are grown densely and uniformly on the RGO sheets. In addition, enhanced microvvave absorption properties in Ku band of RGO-Ni composites is mainly due to the synergistic effect of dielectric loss and magnetic loss and the dramatically electron polarizations caused by the formation of large conductive network. The minimum reflection loss of RGO-Ni-2 composite with the thickness of 2 mm can reaches 42 dB aL 17.6 GHz. The RGO-Ni composite is an attractive candidate for the new type of high performance rnicrovvave absorbing material. (C) 2014 Elsevier BM. All rights reserved.
部门归属	[zhu, zetao ; xue, hairong ; guo, hu ; fan, xiaoli ; pan, xuchen ; he, jianping] nanjing univ aeronaut & astronaut, coll mat sci & technol, nanjing 210016, jiangsu, peoples r china. [sun, xin] sci & technol electromagnet scattering lab, beijing 10054, peoples r china. [li, guoxian] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; he, jp (reprint author), nanjing univ aeronaut & astronaut, coll mat sci & technol, nanjing 210016, jiangsu, peoples r china. ; jianpli@nuaa.edu.cn
关键词	Graphene Ni Electronic Polarization Microwave Absorption Ku-band Electromagnetic-wave Absorption Phase-controlled Synthesis Reduced Graphene Oxide Nanocomposites Absorbing Properties Decorated Graphene Monolayer Graphene Ethylene-glycol Gigahertz Range Carbon Nanotube
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73525
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. T. Zhu,X. Sun,G. X. Li,et al. Microwave-assisted synthesis of graphene-Ni composites with enhanced microwave absorption properties in Ku-band[J]. Journal of Magnetism and Magnetic Materials,2015,377:95-103.
APA	Z. T. Zhu.,X. Sun.,G. X. Li.,H. R. Xue.,H. Guo.,...&J. P. He.(2015).Microwave-assisted synthesis of graphene-Ni composites with enhanced microwave absorption properties in Ku-band.Journal of Magnetism and Magnetic Materials,377,95-103.
MLA	Z. T. Zhu,et al."Microwave-assisted synthesis of graphene-Ni composites with enhanced microwave absorption properties in Ku-band".Journal of Magnetism and Magnetic Materials 377(2015):95-103.