Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band

Abstract Recent studies have found that the core–shell structured metal nanoparticles and porous carbon nanofibers (PCNF) are combined into a microwave absorbing material through electrospinning, which exhibits excellent microwave absorption performance. In this study, the core–shell structure Co na...

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Autores principales:	Y. X. Zhu, S. F. Wang, Y. S. Zhang, Z. G. Wu, B. Zhong, D. R. Li, F. Y. Wang, J. J. Feng, J. Tang, R. F. Zhuo, P. X. Yan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3c25a1d489de48ec9c216a1292273aef
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spelling	oai:doaj.org-article:3c25a1d489de48ec9c216a1292273aef2021-12-02T10:48:13ZLarge-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band10.1038/s41598-021-81848-72045-2322https://doaj.org/article/3c25a1d489de48ec9c216a1292273aef2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81848-7https://doaj.org/toc/2045-2322Abstract Recent studies have found that the core–shell structured metal nanoparticles and porous carbon nanofibers (PCNF) are combined into a microwave absorbing material through electrospinning, which exhibits excellent microwave absorption performance. In this study, the core–shell structure Co nanoparticles prepared by the self-developed HEIBE process (production rate of > 50 g/h) were combined with porous carbon fibers, and their absorbing properties were greatly improved. The morphology of Co/PCNF demonstrated that CoNPs are randomly dispersed in the porous carbon nanofibers and carbon nanofiber form complex conductive network which enhances the dielectric loss of the materials. Meanwhile, the Co/PCNF has a low graphitization and shows a significant improvement in permittivity due to the combination of CoNPs and high conductivity of carbon material. The maximum reflection loss (RL) of Co/PCNF reaches − 63.69 dB at 5.28 GHz with a thickness of 5.21 mm and the absorption bandwidth (RL ≤ − 10.0 dB) is 12.92 GHz. In terms of 5.60 mm and 6.61 mm absorber, there are two absorption peaks of − 47.64 dB and − 48.30 dB appear around 12.50 GHz and 14.10 GHz, respectively. The results presented in this paper may pave a way for promising applications of lightweight and high-efficiency microwave absorbing materials (MAMs).Y. X. ZhuS. F. WangY. S. ZhangZ. G. WuB. ZhongD. R. LiF. Y. WangJ. J. FengJ. TangR. F. ZhuoP. X. YanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Y. X. Zhu S. F. Wang Y. S. Zhang Z. G. Wu B. Zhong D. R. Li F. Y. Wang J. J. Feng J. Tang R. F. Zhuo P. X. Yan Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band
description	Abstract Recent studies have found that the core–shell structured metal nanoparticles and porous carbon nanofibers (PCNF) are combined into a microwave absorbing material through electrospinning, which exhibits excellent microwave absorption performance. In this study, the core–shell structure Co nanoparticles prepared by the self-developed HEIBE process (production rate of > 50 g/h) were combined with porous carbon fibers, and their absorbing properties were greatly improved. The morphology of Co/PCNF demonstrated that CoNPs are randomly dispersed in the porous carbon nanofibers and carbon nanofiber form complex conductive network which enhances the dielectric loss of the materials. Meanwhile, the Co/PCNF has a low graphitization and shows a significant improvement in permittivity due to the combination of CoNPs and high conductivity of carbon material. The maximum reflection loss (RL) of Co/PCNF reaches − 63.69 dB at 5.28 GHz with a thickness of 5.21 mm and the absorption bandwidth (RL ≤ − 10.0 dB) is 12.92 GHz. In terms of 5.60 mm and 6.61 mm absorber, there are two absorption peaks of − 47.64 dB and − 48.30 dB appear around 12.50 GHz and 14.10 GHz, respectively. The results presented in this paper may pave a way for promising applications of lightweight and high-efficiency microwave absorbing materials (MAMs).
format	article
author	Y. X. Zhu S. F. Wang Y. S. Zhang Z. G. Wu B. Zhong D. R. Li F. Y. Wang J. J. Feng J. Tang R. F. Zhuo P. X. Yan
author_facet	Y. X. Zhu S. F. Wang Y. S. Zhang Z. G. Wu B. Zhong D. R. Li F. Y. Wang J. J. Feng J. Tang R. F. Zhuo P. X. Yan
author_sort	Y. X. Zhu
title	Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band
title_short	Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band
title_full	Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band
title_fullStr	Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band
title_full_unstemmed	Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band
title_sort	large-scale preparation of co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in c band
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3c25a1d489de48ec9c216a1292273aef
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Large-scale preparation of Co nanoparticles as an additive in carbon fiber for microwave absorption enhancement in C band

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