Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films

Abstract Polymer thermoelectric (TE) composites have witnessed explosive developments in recent years, arising from their promising prospect for lightweight flexible electronics and capability of harvesting waste-heat. In sharp contrast with intrinsically conducting polymers (CPs), the insulating th...

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Autores principales:	Yichuan Zhang, Liang Deng, Haicai Lv, Guangming Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Electronics TK7800-8360 Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/9f41148ca1114aa89227672a0b128886
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spelling	oai:doaj.org-article:9f41148ca1114aa89227672a0b1288862021-12-02T17:18:33ZToward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films10.1038/s41528-020-00089-22397-4621https://doaj.org/article/9f41148ca1114aa89227672a0b1288862020-10-01T00:00:00Zhttps://doi.org/10.1038/s41528-020-00089-2https://doaj.org/toc/2397-4621Abstract Polymer thermoelectric (TE) composites have witnessed explosive developments in recent years, arising from their promising prospect for lightweight flexible electronics and capability of harvesting waste-heat. In sharp contrast with intrinsically conducting polymers (CPs), the insulating thermoplastics have seldom been employed as the matrices for flexible TE composites despite their advantages of low costs, controllable melt-flowing behaviors and excellent mechanical properties. Here, we report flexible films of polycarbonate/single-walled carbon nanotube (PC/SWCNT) composites with improved trade-off between TE and mechanical performances. The SWCNTs with 1D nanostructure were dramatically aligned by PC melt-flowing under hot-pressing in the radial direction. The composite maximum power factor reaches 4.8 ± 0.8 μW m−1 K−2 at 10 wt% SWCNTs in the aligned direction, which is higher than most previously reported thermoplastics-based TE composites at the same SWCNT loading and even comparable to some intrinsically CPs and their composites. In addition, these composites display significantly higher tensile modulus and strength than CPs and their composites. This study paves an effective way to fabricate flexible films of polymer composites with simultaneously high TE and mechanical performances via judicious alignment of SWCNTs in thermoplastic polymers.Yichuan ZhangLiang DengHaicai LvGuangming ChenNature PortfolioarticleElectronicsTK7800-8360Materials of engineering and construction. Mechanics of materialsTA401-492ENnpj Flexible Electronics, Vol 4, Iss 1, Pp 1-7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electronics TK7800-8360 Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Electronics TK7800-8360 Materials of engineering and construction. Mechanics of materials TA401-492 Yichuan Zhang Liang Deng Haicai Lv Guangming Chen Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films
description	Abstract Polymer thermoelectric (TE) composites have witnessed explosive developments in recent years, arising from their promising prospect for lightweight flexible electronics and capability of harvesting waste-heat. In sharp contrast with intrinsically conducting polymers (CPs), the insulating thermoplastics have seldom been employed as the matrices for flexible TE composites despite their advantages of low costs, controllable melt-flowing behaviors and excellent mechanical properties. Here, we report flexible films of polycarbonate/single-walled carbon nanotube (PC/SWCNT) composites with improved trade-off between TE and mechanical performances. The SWCNTs with 1D nanostructure were dramatically aligned by PC melt-flowing under hot-pressing in the radial direction. The composite maximum power factor reaches 4.8 ± 0.8 μW m−1 K−2 at 10 wt% SWCNTs in the aligned direction, which is higher than most previously reported thermoplastics-based TE composites at the same SWCNT loading and even comparable to some intrinsically CPs and their composites. In addition, these composites display significantly higher tensile modulus and strength than CPs and their composites. This study paves an effective way to fabricate flexible films of polymer composites with simultaneously high TE and mechanical performances via judicious alignment of SWCNTs in thermoplastic polymers.
format	article
author	Yichuan Zhang Liang Deng Haicai Lv Guangming Chen
author_facet	Yichuan Zhang Liang Deng Haicai Lv Guangming Chen
author_sort	Yichuan Zhang
title	Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films
title_short	Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films
title_full	Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films
title_fullStr	Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films
title_full_unstemmed	Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films
title_sort	toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/9f41148ca1114aa89227672a0b128886
work_keys_str_mv	AT yichuanzhang towardimprovedtradeoffbetweenthermoelectricandmechanicalperformancesinpolycarbonatesinglewalledcarbonnanotubecompositefilms AT liangdeng towardimprovedtradeoffbetweenthermoelectricandmechanicalperformancesinpolycarbonatesinglewalledcarbonnanotubecompositefilms AT haicailv towardimprovedtradeoffbetweenthermoelectricandmechanicalperformancesinpolycarbonatesinglewalledcarbonnanotubecompositefilms AT guangmingchen towardimprovedtradeoffbetweenthermoelectricandmechanicalperformancesinpolycarbonatesinglewalledcarbonnanotubecompositefilms
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Toward improved trade-off between thermoelectric and mechanical performances in polycarbonate/single-walled carbon nanotube composite films

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