Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance

Abstract Graphene oxide (GO) was rarely used as microwave absorption (MA) material due to its lower dielectric loss compared with reduced GO (RGO). However, the characteristics of low conductivity, light weight, and large surface area were beneficial to the impedance matching for absorbers already c...

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Autores principales:	Xiaoxia Wang, Baoqin Zhang, Wei Zhang, Mingxun Yu, Liang Cui, Xueying Cao, Jingquan Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/64736f85dac54b65a830a4e66f8dd03e
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spelling	oai:doaj.org-article:64736f85dac54b65a830a4e66f8dd03e2021-12-02T15:05:11ZSuper-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance10.1038/s41598-017-01529-22045-2322https://doaj.org/article/64736f85dac54b65a830a4e66f8dd03e2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01529-2https://doaj.org/toc/2045-2322Abstract Graphene oxide (GO) was rarely used as microwave absorption (MA) material due to its lower dielectric loss compared with reduced GO (RGO). However, the characteristics of low conductivity, light weight, and large surface area were beneficial to the impedance matching for absorbers already containing highly conductive metal materials. Cu@Ni nanowires are promising MA materials due to the desired dielectric loss from copper and excellent magnetic loss from nickel. However, the high density was an impediment to its further application. Combining Cu@Ni nanowires with GO should be an effective solution to decrease the absorber’s density and improve its MA properties. Herein, we demonstrated that Cu@Ni nanowires/GO composites exhibited enhanced MA capacities compared with Cu@Ni nanowires or GO alone, and the minimum reflection loss reached −42.8 dB at 16.9 GHz with a thickness of 2.1 mm. The enhanced MA performance mainly originated from good impedance matching, as a result of the addition of low conductivity of GO. To confirm this point, the MA performance of Cu@Ni nanowires/RGO was studied, and unsurprisingly, weak MA performance was obtained. Our work provides a new strategy to decrease the density, broaden the frequency band and tune MA performance of composites.Xiaoxia WangBaoqin ZhangWei ZhangMingxun YuLiang CuiXueying CaoJingquan LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiaoxia Wang Baoqin Zhang Wei Zhang Mingxun Yu Liang Cui Xueying Cao Jingquan Liu Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance
description	Abstract Graphene oxide (GO) was rarely used as microwave absorption (MA) material due to its lower dielectric loss compared with reduced GO (RGO). However, the characteristics of low conductivity, light weight, and large surface area were beneficial to the impedance matching for absorbers already containing highly conductive metal materials. Cu@Ni nanowires are promising MA materials due to the desired dielectric loss from copper and excellent magnetic loss from nickel. However, the high density was an impediment to its further application. Combining Cu@Ni nanowires with GO should be an effective solution to decrease the absorber’s density and improve its MA properties. Herein, we demonstrated that Cu@Ni nanowires/GO composites exhibited enhanced MA capacities compared with Cu@Ni nanowires or GO alone, and the minimum reflection loss reached −42.8 dB at 16.9 GHz with a thickness of 2.1 mm. The enhanced MA performance mainly originated from good impedance matching, as a result of the addition of low conductivity of GO. To confirm this point, the MA performance of Cu@Ni nanowires/RGO was studied, and unsurprisingly, weak MA performance was obtained. Our work provides a new strategy to decrease the density, broaden the frequency band and tune MA performance of composites.
format	article
author	Xiaoxia Wang Baoqin Zhang Wei Zhang Mingxun Yu Liang Cui Xueying Cao Jingquan Liu
author_facet	Xiaoxia Wang Baoqin Zhang Wei Zhang Mingxun Yu Liang Cui Xueying Cao Jingquan Liu
author_sort	Xiaoxia Wang
title	Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance
title_short	Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance
title_full	Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance
title_fullStr	Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance
title_full_unstemmed	Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance
title_sort	super-light cu@ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/64736f85dac54b65a830a4e66f8dd03e
work_keys_str_mv	AT xiaoxiawang superlightcuninanowiresgrapheneoxidecompositesforsignificantlyenhancedmicrowaveabsorptionperformance AT baoqinzhang superlightcuninanowiresgrapheneoxidecompositesforsignificantlyenhancedmicrowaveabsorptionperformance AT weizhang superlightcuninanowiresgrapheneoxidecompositesforsignificantlyenhancedmicrowaveabsorptionperformance AT mingxunyu superlightcuninanowiresgrapheneoxidecompositesforsignificantlyenhancedmicrowaveabsorptionperformance AT liangcui superlightcuninanowiresgrapheneoxidecompositesforsignificantlyenhancedmicrowaveabsorptionperformance AT xueyingcao superlightcuninanowiresgrapheneoxidecompositesforsignificantlyenhancedmicrowaveabsorptionperformance AT jingquanliu superlightcuninanowiresgrapheneoxidecompositesforsignificantlyenhancedmicrowaveabsorptionperformance
_version_	1718388893832708096

Super-light Cu@Ni nanowires/graphene oxide composites for significantly enhanced microwave absorption performance

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