Salt template assisted preparation of magnetic modified nitrogen doping hollow carbon microcapsules for broadband microwave absorption

doi:10.1016/j.jallcom.2025.178721

IMR OpenIR

	Salt template assisted preparation of magnetic modified nitrogen doping hollow carbon microcapsules for broadband microwave absorption
	Xu, Dongwei 1; Zhang, Mingju 1; Shen, Zhihao 1; Wang, Chao 1; Chen, Duo 1; Wei, Yuxuan 1; Zeng, You 2; Zhao, Biao 3; Xiong, Xuhai 4; Chen, Ping 5
通讯作者	Zeng, You(yzeng@imr.ac.cn) ; Zhao, Biao(zhao_biao@fudan.edu.cn) ; Chen, Ping(chenping_898@126.com)
	2025-02-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	1014 页码:9
摘要	The rational structural design and precise compositional regulation of lightweight and broadband carbon-based absorbing materials is an urgent task at present to deal with the complex electromagnetic environment. The soluble salt template assisted preparation technology holds good feasibility for constructing unique hollow carbon-based microwave absorbents due to their reusability and economy of salt templates. Nevertheless, magnetic modified nitrogen doping hollow carbon microcapsules fabricated by employing salt-template technique have not been explored. Herein, we adopt a green and low cost NaCl soluble salt template assisted synthesis strategy to universally fabricate 3D unique hollow carbon-based microwave materials loaded with precursors of magnetic particles. Following the high-temperature pyrolysis and wash desalting template, we have successfully achieved mass preparation of magnetic modified nitrogen doping hollow carbon microcapsules. Benefiting from the unique chemical component dominance and distinctive structural merits, the optimized Ni magnetic modified nitrogen doping hollow carbon microcapsules (Ni@N-HCNs) delivered extremely outstanding microwave absorption performance (MAP), including an optimal minimum reflection loss value (RLmin) of -37.7 dB and an effective absorption bandwidth of 5.5 GHz under a filling level of only 5 wt%. More excitingly, the widest effective absorption bandwidth could cover up to 7.87 GHz (10.03-18.0 GHz) at a thin matching thickness of 2.6 mm. Due to the large-scale production and simple preparation process, Ni@N-HCNs composites might be considered as one of the most competitive candidates for the design of lightweight and high performance microwave absorbents.
关键词	Salt-template Hollow carbon microcapsule Interface polarization Microwave absorption
资助者	Key Scientific Research Project of Higher Education Institutions in Henan Province ; Open fund of Henan Key Laboratory of Aeronautical Materials and Application Technology ; Natural Science Foundation of Henan Province ; Youth Research Funds Plan of Zhengzhou University of Aeronautics ; Science and Technology Project in Henan Province
DOI	10.1016/j.jallcom.2025.178721
收录类别	SCI
语种	英语
资助项目	Key Scientific Research Project of Higher Education Institutions in Henan Province[23A430006] ; Open fund of Henan Key Laboratory of Aeronautical Materials and Application Technology[ZHKF-240101] ; Natural Science Foundation of Henan Province[232300420332] ; Youth Research Funds Plan of Zhengzhou University of Aeronautics[23ZHQN01005] ; Science and Technology Project in Henan Province[242102231013]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001405267100001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180412
专题	中国科学院金属研究所
通讯作者	Zeng, You; Zhao, Biao; Chen, Ping
作者单位	1.Zhengzhou Univ Aeronaut, Sch Mat Sci & Engn, Henan Key Lab Aeronaut Mat & Applicat Technol, Zhengzhou 450046, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Fudan Univ, Lab Adv Mat, Shanghai 200438, Peoples R China 4.Shenyang Aerosp Univ, Liaoning Key Lab Adv Polymer Matrix Composites, Shenyang 110136, Peoples R China 5.Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Xu, Dongwei,Zhang, Mingju,Shen, Zhihao,et al. Salt template assisted preparation of magnetic modified nitrogen doping hollow carbon microcapsules for broadband microwave absorption[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2025,1014:9.
APA	Xu, Dongwei.,Zhang, Mingju.,Shen, Zhihao.,Wang, Chao.,Chen, Duo.,...&Chen, Ping.(2025).Salt template assisted preparation of magnetic modified nitrogen doping hollow carbon microcapsules for broadband microwave absorption.JOURNAL OF ALLOYS AND COMPOUNDS,1014,9.
MLA	Xu, Dongwei,et al."Salt template assisted preparation of magnetic modified nitrogen doping hollow carbon microcapsules for broadband microwave absorption".JOURNAL OF ALLOYS AND COMPOUNDS 1014(2025):9.