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Enhancing thermoelectric properties of organic composites through hierarchical nanostructures

Organic thermoelectric (TE) materials are very attractive due to easy processing, material abundance, and environmentally-benign characteristics, but their potential is significantly restricted by the inferior thermoelectric properties. In this work, noncovalently functionalized graphene with fuller...

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Detalles Bibliográficos
Autores principales: Zhang, Kun, Zhang, Yue, Wang, Shiren
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3861799/
https://www.ncbi.nlm.nih.gov/pubmed/24336319
http://dx.doi.org/10.1038/srep03448
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author Zhang, Kun
Zhang, Yue
Wang, Shiren
author_facet Zhang, Kun
Zhang, Yue
Wang, Shiren
author_sort Zhang, Kun
collection PubMed
description Organic thermoelectric (TE) materials are very attractive due to easy processing, material abundance, and environmentally-benign characteristics, but their potential is significantly restricted by the inferior thermoelectric properties. In this work, noncovalently functionalized graphene with fullerene by π-π stacking in a liquid-liquid interface was integrated into poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate). Graphene helps to improve electrical conductivity while fullerene enhances the Seebeck coefficient and hinders thermal conductivity, resulting in the synergistic effect on enhancing thermoelectric properties. With the integration of nanohybrids, the electrical conductivity increased from ~10000 to ~70000 S/m, the thermal conductivity changed from 0.2 to 2 W·K(−1)m(−1) while the Seebeck coefficient was enhanced by around 4-fold. As a result, nanohybrids-based polymer composites demonstrated the figure of merit (ZT) as high as 6.7 × 10(−2), indicating an enhancement of more than one order of magnitude in comparison to single-phase filler-based polymer composites with ZT at the level of 10(−3).
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spelling pubmed-38617992013-12-13 Enhancing thermoelectric properties of organic composites through hierarchical nanostructures Zhang, Kun Zhang, Yue Wang, Shiren Sci Rep Article Organic thermoelectric (TE) materials are very attractive due to easy processing, material abundance, and environmentally-benign characteristics, but their potential is significantly restricted by the inferior thermoelectric properties. In this work, noncovalently functionalized graphene with fullerene by π-π stacking in a liquid-liquid interface was integrated into poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate). Graphene helps to improve electrical conductivity while fullerene enhances the Seebeck coefficient and hinders thermal conductivity, resulting in the synergistic effect on enhancing thermoelectric properties. With the integration of nanohybrids, the electrical conductivity increased from ~10000 to ~70000 S/m, the thermal conductivity changed from 0.2 to 2 W·K(−1)m(−1) while the Seebeck coefficient was enhanced by around 4-fold. As a result, nanohybrids-based polymer composites demonstrated the figure of merit (ZT) as high as 6.7 × 10(−2), indicating an enhancement of more than one order of magnitude in comparison to single-phase filler-based polymer composites with ZT at the level of 10(−3). Nature Publishing Group 2013-12-13 /pmc/articles/PMC3861799/ /pubmed/24336319 http://dx.doi.org/10.1038/srep03448 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Zhang, Kun
Zhang, Yue
Wang, Shiren
Enhancing thermoelectric properties of organic composites through hierarchical nanostructures
title Enhancing thermoelectric properties of organic composites through hierarchical nanostructures
title_full Enhancing thermoelectric properties of organic composites through hierarchical nanostructures
title_fullStr Enhancing thermoelectric properties of organic composites through hierarchical nanostructures
title_full_unstemmed Enhancing thermoelectric properties of organic composites through hierarchical nanostructures
title_short Enhancing thermoelectric properties of organic composites through hierarchical nanostructures
title_sort enhancing thermoelectric properties of organic composites through hierarchical nanostructures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3861799/
https://www.ncbi.nlm.nih.gov/pubmed/24336319
http://dx.doi.org/10.1038/srep03448
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