Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials

Sintered carbon nanotube (CNT) blocks and porous CNT sponges were prepared, and their thermoelectric properties were measured. The maximum dimensionless thermoelectric figure-of-merit, ZT, at room temperature of the sintered single-walled carbon nanotube (SWCNT) block is 9.34 × 10−5, which is twice...

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Autores principales:	Yang Xueming, Cui Jixiang, Xue Ke, Fu Yao, Li Hanling, Yang Hong
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	thermal conductivity carbon nanotubes thermoelectric properties seebeck coefficient Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/fdb81a87037a437c8e2dfcd96d256366
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spelling	oai:doaj.org-article:fdb81a87037a437c8e2dfcd96d2563662021-12-05T14:10:57ZThermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials2191-909710.1515/ntrev-2021-0013https://doaj.org/article/fdb81a87037a437c8e2dfcd96d2563662021-04-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0013https://doaj.org/toc/2191-9097Sintered carbon nanotube (CNT) blocks and porous CNT sponges were prepared, and their thermoelectric properties were measured. The maximum dimensionless thermoelectric figure-of-merit, ZT, at room temperature of the sintered single-walled carbon nanotube (SWCNT) block is 9.34 × 10−5, which is twice higher than that of the sintered multi-walled carbon nanotube (MWCNT) block in this work and also higher than that of other sintered MWCNT blocks reported previously. In addition, the porous MWCNT sponge showed an ultra-low thermal conductivity of 0.021 W/(m K) and significantly enhanced ZT value of 5.72 × 10−4 at room temperature and 1 atm. This ZT value is higher than that of other 3D macroscopic pure CNT materials reported. The pronounced enhancement of the ZT in the porous MWCNT sponge is attributed to the ultra-low density, ultra-high porosity, and interconnected structure of the material, which lead to a fairly low thermal conductivity and better Seebeck coefficient. The finding of this work provides an understanding for exploring potential enhancement mechanisms and improving the thermoelectric properties of CNT-based thermoelectric composites.Yang XuemingCui JixiangXue KeFu YaoLi HanlingYang HongDe Gruyterarticlethermal conductivitycarbon nanotubesthermoelectric propertiesseebeck coefficientTechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 178-186 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	thermal conductivity carbon nanotubes thermoelectric properties seebeck coefficient Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
spellingShingle	thermal conductivity carbon nanotubes thermoelectric properties seebeck coefficient Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Yang Xueming Cui Jixiang Xue Ke Fu Yao Li Hanling Yang Hong Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials
description	Sintered carbon nanotube (CNT) blocks and porous CNT sponges were prepared, and their thermoelectric properties were measured. The maximum dimensionless thermoelectric figure-of-merit, ZT, at room temperature of the sintered single-walled carbon nanotube (SWCNT) block is 9.34 × 10−5, which is twice higher than that of the sintered multi-walled carbon nanotube (MWCNT) block in this work and also higher than that of other sintered MWCNT blocks reported previously. In addition, the porous MWCNT sponge showed an ultra-low thermal conductivity of 0.021 W/(m K) and significantly enhanced ZT value of 5.72 × 10−4 at room temperature and 1 atm. This ZT value is higher than that of other 3D macroscopic pure CNT materials reported. The pronounced enhancement of the ZT in the porous MWCNT sponge is attributed to the ultra-low density, ultra-high porosity, and interconnected structure of the material, which lead to a fairly low thermal conductivity and better Seebeck coefficient. The finding of this work provides an understanding for exploring potential enhancement mechanisms and improving the thermoelectric properties of CNT-based thermoelectric composites.
format	article
author	Yang Xueming Cui Jixiang Xue Ke Fu Yao Li Hanling Yang Hong
author_facet	Yang Xueming Cui Jixiang Xue Ke Fu Yao Li Hanling Yang Hong
author_sort	Yang Xueming
title	Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials
title_short	Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials
title_full	Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials
title_fullStr	Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials
title_full_unstemmed	Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials
title_sort	thermal conductivity and thermoelectric properties in 3d macroscopic pure carbon nanotube materials
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/fdb81a87037a437c8e2dfcd96d256366
work_keys_str_mv	AT yangxueming thermalconductivityandthermoelectricpropertiesin3dmacroscopicpurecarbonnanotubematerials AT cuijixiang thermalconductivityandthermoelectricpropertiesin3dmacroscopicpurecarbonnanotubematerials AT xueke thermalconductivityandthermoelectricpropertiesin3dmacroscopicpurecarbonnanotubematerials AT fuyao thermalconductivityandthermoelectricpropertiesin3dmacroscopicpurecarbonnanotubematerials AT lihanling thermalconductivityandthermoelectricpropertiesin3dmacroscopicpurecarbonnanotubematerials AT yanghong thermalconductivityandthermoelectricpropertiesin3dmacroscopicpurecarbonnanotubematerials
_version_	1718371579678687232

Thermal conductivity and thermoelectric properties in 3D macroscopic pure carbon nanotube materials

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