Design and synthesis of magnetic porous carbon nanofibers with excellent microwave absorption

doi:10.1016/j.jallcom.2022.163971

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Design and synthesis of magnetic porous carbon nanofibers with excellent microwave absorption
	Shen, Yongqian 2; Zhang, Fan 2; Song, Pengfei 2; Zhang, Yuchen 2; Zhang, Ting 2; Wen, Xiaoqian 2; Ma, Jiqiang 2; Zhang, Dong 1; Du, Xueyan 2
刊名	Journal of Alloys and Compounds
	2022-05-15
卷号	903
关键词	Calcination Carbon nanofibers Dielectric losses Etching Impedance matching (electric) Magnetism Microwaves Polarization Porous materials Carbon nanofibres Electromagnetic impedance Electromagnetic parameters Impedance matchings Loss mechanisms Microwave absorption Porous carbon nanofibers Porous Ni Reflection loss Vacuum calcination
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2022.163971
英文摘要	The magnetic porous carbon nanofibers (CNFs) are highly desirable due to the excellent reflection loss (RL) and impedance matching in microwave absorption applications. Herein, the porous Ni/NiO/CNFs were fabricated by electrospinning combined with vacuum calcination and etching technology. Porous Ni/NiO/CNFs with different electromagnetic (EM) parameters and impedance matching could be easily obtained by adjusting the calcination temperature. On account of the synergistic loss mechanism composed of magnetic loss and dielectric loss leads to excellent impedance matching, the porous structure caused multiple reflection and scattering of incident electromagnetic waves (EMW), combined with the polarization loss between different components, the as-prepared materials exhibited enhanced EMW absorbing property compared with traditional microwave absorbers (MAs). The resulting porous Ni/NiO/CNFs obtained at 650 °C exhibited the optimal EMW absorption performance with an RL of −47.9 dB at 9.5 GHz and broad effective absorption bandwidth (EAB) of 3.5 GHz with a thickness of 3.0 mm. This work provides a mentality for multi-component loss mechanism and rational structure design of CNFs-based absorbing materials. © 2022
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000779658800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158029]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院能源与动力工程学院石油化工学院研究生院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.School of Materials Science & Engineering, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Shen, Yongqian,Zhang, Fan,Song, Pengfei,et al. Design and synthesis of magnetic porous carbon nanofibers with excellent microwave absorption[J]. Journal of Alloys and Compounds,2022,903.
APA	Shen, Yongqian.,Zhang, Fan.,Song, Pengfei.,Zhang, Yuchen.,Zhang, Ting.,...&Du, Xueyan.(2022).Design and synthesis of magnetic porous carbon nanofibers with excellent microwave absorption.Journal of Alloys and Compounds,903.
MLA	Shen, Yongqian,et al."Design and synthesis of magnetic porous carbon nanofibers with excellent microwave absorption".Journal of Alloys and Compounds 903(2022).