Nanostructured Inorganic Chalcogenide- Carbon Nanotube Yarn having a High Thermoelectric Power Factor at Low Temperature

Title
Nanostructured Inorganic Chalcogenide- Carbon Nanotube Yarn having a High Thermoelectric Power Factor at Low Temperature
Authors
김진상김희숙이태민박경태이재원박종래
Issue Date
2021-08
Publisher
ACS Nano
Citation
VOL 15, NO 8-13128
Abstract
As power-conversion devices, flexible thermoelectrics that enable conformal contact with heat sources of arbitrary shape are attractive. However, the low performance of flexible thermoelectric materials, which does not exceed those of brittle inorganic counterparts, hampers their practical applications. Herein, we propose inorganic chalcogenide-nanostructured carbon nanotube (CNT) yarns with outstanding power factor at a low temperature using electrochemical deposition. The inorganic chalcogenide-nanostructured CNT yarns exhibit the power factors of 3425 and 2730 μW/(m·K2) at 298 K for the p- and n-type, respectively, which is higher than those of previously reported flexible TE materials. On the basis of excellent performance and geometry advantage of the nanostructured CNT yarn for modular design, all-CNT based thermoelectric generators have been easily fabricated, showing the maximum power densities of 24 and 380 mW/m2 at ΔT = 5 and 20 K, respectively. These results provide a promising strategy for the realization of high-performance flexible thermoelectric materials and devices for flexible/or wearable self-powering systems.
URI
http://pubs.kist.re.kr/handle/201004/73713
ISSN
1936-0851
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KIST Publication > Article
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