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Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties
Graphene paper has attracted great attention as a heat dissipation material due to its excellent thermal conductivity and mechanical properties. However, the thermal conductivity of graphene paper in the normal direction is relatively poor. In this work, the cross-plane thermal conductivities (K(⊥))...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9246462/ https://www.ncbi.nlm.nih.gov/pubmed/35865578 http://dx.doi.org/10.1039/d2ra01723g |
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author | Yang, Yan Shen, Honglie Yang, Jiale Gao, Kai Wang, Zehui Sun, Luanhong |
author_facet | Yang, Yan Shen, Honglie Yang, Jiale Gao, Kai Wang, Zehui Sun, Luanhong |
author_sort | Yang, Yan |
collection | PubMed |
description | Graphene paper has attracted great attention as a heat dissipation material due to its excellent thermal conductivity and mechanical properties. However, the thermal conductivity of graphene paper in the normal direction is relatively poor. In this work, the cross-plane thermal conductivities (K(⊥)) and mechanical properties of the reduced graphene oxide/carbon nanotube papers with different CNT loadings were studied systematically. It was found that the K(⊥) decreased from 0.0393 W m(−1) K(−1) for 0 wt% paper to 0.0250 W m(−1) K(−1) for 3 wt% paper, and then increased to 0.1199 W m(−1) K(−1) for 20 wt% paper. The papers demonstrated a maximum elastic modulus of 6.1 GPa with 10 wt% CNT loading. The CNTs acted as scaffolds to restrain the graphene sheets from corrugating and to reinforce the mechanical properties of the hybrid papers. The more CNTs that filled the gaps between graphene sheets, the greater the number of channels of the transmission of phonons and the looser the structure in the cross-plane direction. Further mechanism analysis revealed the synergistic effects of CNT loadings and graphene sheets on enhancing the thermal and mechanical performance of the papers. |
format | Online Article Text |
id | pubmed-9246462 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-92464622022-07-20 Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties Yang, Yan Shen, Honglie Yang, Jiale Gao, Kai Wang, Zehui Sun, Luanhong RSC Adv Chemistry Graphene paper has attracted great attention as a heat dissipation material due to its excellent thermal conductivity and mechanical properties. However, the thermal conductivity of graphene paper in the normal direction is relatively poor. In this work, the cross-plane thermal conductivities (K(⊥)) and mechanical properties of the reduced graphene oxide/carbon nanotube papers with different CNT loadings were studied systematically. It was found that the K(⊥) decreased from 0.0393 W m(−1) K(−1) for 0 wt% paper to 0.0250 W m(−1) K(−1) for 3 wt% paper, and then increased to 0.1199 W m(−1) K(−1) for 20 wt% paper. The papers demonstrated a maximum elastic modulus of 6.1 GPa with 10 wt% CNT loading. The CNTs acted as scaffolds to restrain the graphene sheets from corrugating and to reinforce the mechanical properties of the hybrid papers. The more CNTs that filled the gaps between graphene sheets, the greater the number of channels of the transmission of phonons and the looser the structure in the cross-plane direction. Further mechanism analysis revealed the synergistic effects of CNT loadings and graphene sheets on enhancing the thermal and mechanical performance of the papers. The Royal Society of Chemistry 2022-06-30 /pmc/articles/PMC9246462/ /pubmed/35865578 http://dx.doi.org/10.1039/d2ra01723g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Yang, Yan Shen, Honglie Yang, Jiale Gao, Kai Wang, Zehui Sun, Luanhong Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties |
title | Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties |
title_full | Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties |
title_fullStr | Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties |
title_full_unstemmed | Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties |
title_short | Synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties |
title_sort | synergistic effect of reduced graphene oxide/carbon nanotube hybrid papers on cross-plane thermal and mechanical properties |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9246462/ https://www.ncbi.nlm.nih.gov/pubmed/35865578 http://dx.doi.org/10.1039/d2ra01723g |
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