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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(⊥))...

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Autores principales: Yang, Yan, Shen, Honglie, Yang, Jiale, Gao, Kai, Wang, Zehui, Sun, Luanhong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
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.
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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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