Graphene nanoflakes with optimized nitrogen doping fabricated by are discharge as highly efficient absorbers toward microwave absorption

doi:10.1016/j.carbon.2019.03.034

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	Graphene nanoflakes with optimized nitrogen doping fabricated by are discharge as highly efficient absorbers toward microwave absorption
	Zhou, Yuanliang 1; Wang, Ning 4; Muhammad, Javid 1; Wang, Dongxing 1; Duan, Yuping 1; Zhang, Xuefeng 3; Dong, Xinglong 1; Zhang, Zhidong 2
刊名	CARBON
	2019-07-01
卷号	148 页码:204-213
ISSN号	0008-6223
DOI	10.1016/j.carbon.2019.03.034
通讯作者	Dong, Xinglong(dongxl@dlut.edu.cn) ; Zhang, Zhidong(zdzhang@imr.ac.cn)
英文摘要	Abundant resources, light weight as well as stable physicochemical properties enable carbon nano-materials promising candidates toward microwave absorption. However, it is still a great challenge for carbon-based absorbers to achieve broad frequency bandwidth and strong absorption, which fundamentally ascribes to the poor impedance matching resulted by their comparatively high electrical conductivities. Herein, a feasible and high-yield method has been employed to the in-situ synthesis of N-doped graphene nanoflakes which can effectively address interfacial impedance mismatching, and realize the majority of microwaves penetration into the interior of absorber. The incorporation of substitutional N atoms into graphene lattices markedly weaken crystallization degree and introduce masses of defects, directly leading to the decline of electric conductivity, meanwhile benefiting the improvement of static magnetization. Our findings indicate that compared with pure graphene nanoflakes, the counterpart containing 4.6 at.% of nitrogen exhibits an excellent absorption capability, in which more than 99% of microwave energy can be quantitatively attenuated at 5-18 GHz. Experimental results coupled with theory calculations further elucidate that such high performance essentially originates from the proper impedance matching constructed in the N-doped graphene nanoflakes. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science foundations of China[51331006] ; National Natural Science foundations of China[51271044]
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000468421900022
资助机构	National Natural Science foundations of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/133433]
专题	金属研究所_中国科学院金属研究所
通讯作者	Dong, Xinglong; Zhang, Zhidong
作者单位	1.Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110015, Liaoning, Peoples R China 3.Northeastern Univ, Sch Mat & Engn, Key Lab Anisotropy & Texture Mat MoE, Shenyang 110819, Liaoning, Peoples R China 4.KAUST, Phys Sci & Engn Div PSE, Thuwal 239556900, Saudi Arabia
推荐引用方式 GB/T 7714	Zhou, Yuanliang,Wang, Ning,Muhammad, Javid,et al. Graphene nanoflakes with optimized nitrogen doping fabricated by are discharge as highly efficient absorbers toward microwave absorption[J]. CARBON,2019,148:204-213.
APA	Zhou, Yuanliang.,Wang, Ning.,Muhammad, Javid.,Wang, Dongxing.,Duan, Yuping.,...&Zhang, Zhidong.(2019).Graphene nanoflakes with optimized nitrogen doping fabricated by are discharge as highly efficient absorbers toward microwave absorption.CARBON,148,204-213.
MLA	Zhou, Yuanliang,et al."Graphene nanoflakes with optimized nitrogen doping fabricated by are discharge as highly efficient absorbers toward microwave absorption".CARBON 148(2019):204-213.