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Porous Graphene Microflowers for High-Performance Microwave Absorption
Graphene has shown great potential in microwave absorption (MA) owing to its high surface area, low density, tunable electrical conductivity and good chemical stability. To fully realize grapheneʼs MA ability, the microstructure of graphene should be carefully addressed. Here we prepared graphene mi...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6199076/ https://www.ncbi.nlm.nih.gov/pubmed/30393675 http://dx.doi.org/10.1007/s40820-017-0179-8 |
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author | Chen, Chen Xi, Jiabin Zhou, Erzhen Peng, Li Chen, Zichen Gao, Chao |
author_facet | Chen, Chen Xi, Jiabin Zhou, Erzhen Peng, Li Chen, Zichen Gao, Chao |
author_sort | Chen, Chen |
collection | PubMed |
description | Graphene has shown great potential in microwave absorption (MA) owing to its high surface area, low density, tunable electrical conductivity and good chemical stability. To fully realize grapheneʼs MA ability, the microstructure of graphene should be carefully addressed. Here we prepared graphene microflowers (Gmfs) with highly porous structure for high-performance MA filler material. The efficient absorption bandwidth (reflection loss ≤ −10 dB) reaches 5.59 GHz and the minimum reflection loss is up to −42.9 dB, showing significant increment compared with stacked graphene. Such performance is higher than most graphene-based materials in the literature. Besides, the low filling content (10 wt%) and low density (40–50 mg cm(−3)) are beneficial for the practical applications. Without compounding with magnetic materials or conductive polymers, Gmfs show outstanding MA performance with the aid of rational microstructure design. Furthermore, Gmfs exhibit advantages in facile processibility and large-scale production compared with other porous graphene materials including aerogels and foams. [Image: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s40820-017-0179-8) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-6199076 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-61990762018-11-02 Porous Graphene Microflowers for High-Performance Microwave Absorption Chen, Chen Xi, Jiabin Zhou, Erzhen Peng, Li Chen, Zichen Gao, Chao Nanomicro Lett Article Graphene has shown great potential in microwave absorption (MA) owing to its high surface area, low density, tunable electrical conductivity and good chemical stability. To fully realize grapheneʼs MA ability, the microstructure of graphene should be carefully addressed. Here we prepared graphene microflowers (Gmfs) with highly porous structure for high-performance MA filler material. The efficient absorption bandwidth (reflection loss ≤ −10 dB) reaches 5.59 GHz and the minimum reflection loss is up to −42.9 dB, showing significant increment compared with stacked graphene. Such performance is higher than most graphene-based materials in the literature. Besides, the low filling content (10 wt%) and low density (40–50 mg cm(−3)) are beneficial for the practical applications. Without compounding with magnetic materials or conductive polymers, Gmfs show outstanding MA performance with the aid of rational microstructure design. Furthermore, Gmfs exhibit advantages in facile processibility and large-scale production compared with other porous graphene materials including aerogels and foams. [Image: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s40820-017-0179-8) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2017-12-21 /pmc/articles/PMC6199076/ /pubmed/30393675 http://dx.doi.org/10.1007/s40820-017-0179-8 Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Article Chen, Chen Xi, Jiabin Zhou, Erzhen Peng, Li Chen, Zichen Gao, Chao Porous Graphene Microflowers for High-Performance Microwave Absorption |
title | Porous Graphene Microflowers for High-Performance Microwave Absorption |
title_full | Porous Graphene Microflowers for High-Performance Microwave Absorption |
title_fullStr | Porous Graphene Microflowers for High-Performance Microwave Absorption |
title_full_unstemmed | Porous Graphene Microflowers for High-Performance Microwave Absorption |
title_short | Porous Graphene Microflowers for High-Performance Microwave Absorption |
title_sort | porous graphene microflowers for high-performance microwave absorption |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6199076/ https://www.ncbi.nlm.nih.gov/pubmed/30393675 http://dx.doi.org/10.1007/s40820-017-0179-8 |
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