High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam
Abstract Organic thermoelectric generators (TEGs) are flexible and lightweight, but they often have high electrical resistance, poor output power, and low mechanical durability, because of which their thermoelectric performance is poor. We used a facile and rapid solvent evaporation process to prepa...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Carbon Energy |
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| Online Access: | https://doi.org/10.1002/cey2.650 |
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| author | Myeong Hoon Jeong Eun Jin Bae Byoungwook Park Jong‐Woon Ha Mijeong Han Young Hun Kang |
| author_facet | Myeong Hoon Jeong Eun Jin Bae Byoungwook Park Jong‐Woon Ha Mijeong Han Young Hun Kang |
| author_sort | Myeong Hoon Jeong |
| collection | DOAJ |
| description | Abstract Organic thermoelectric generators (TEGs) are flexible and lightweight, but they often have high electrical resistance, poor output power, and low mechanical durability, because of which their thermoelectric performance is poor. We used a facile and rapid solvent evaporation process to prepare a robust carbon nanotube/Bi0.45Sb1.55Te3 (CNT/BST) foam with a high thermoelectric figure of merit (zT). The BST sub‐micronparticles effectively create an electrically conductive network within the three‐dimensional porous CNT foam to greatly improve the electrical conductivity and the Seebeck coefficient and reinforce the mechanical strength of the composite against applied stresses. The CNT/BST foam had a zT value of 7.8 × 10−3 at 300 K, which was 5.7 times higher than that of pristine CNT foam. We used the CNT/BST foam to fabricate a flexible TEG with an internal resistance of 12.3 Ω and an output power of 15.7 µW at a temperature difference of 21.8 K. The flexible TEG showed excellent stability and durability even after 10,000 bending cycles. Finally, we demonstrate the shapeability of the CNT/BST foam by fabricating a concave TEG with conformal contact on the surface of a cylindrical glass tube, which suggests its practical applicability as a thermal sensor. |
| format | Article |
| id | doaj-art-f1ebb51473094acda174dca1ed169787 |
| institution | Kabale University |
| issn | 2637-9368 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj-art-f1ebb51473094acda174dca1ed1697872025-01-24T13:35:41ZengWileyCarbon Energy2637-93682025-01-0171n/an/a10.1002/cey2.650High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foamMyeong Hoon Jeong0Eun Jin Bae1Byoungwook Park2Jong‐Woon Ha3Mijeong Han4Young Hun Kang5Division of Advanced Materials Korea Research Institute of Chemical Technology Daejeon Republic of KoreaDivision of Advanced Materials Korea Research Institute of Chemical Technology Daejeon Republic of KoreaDivision of Advanced Materials Korea Research Institute of Chemical Technology Daejeon Republic of KoreaDivision of Advanced Materials Korea Research Institute of Chemical Technology Daejeon Republic of KoreaDivision of Advanced Materials Korea Research Institute of Chemical Technology Daejeon Republic of KoreaDivision of Advanced Materials Korea Research Institute of Chemical Technology Daejeon Republic of KoreaAbstract Organic thermoelectric generators (TEGs) are flexible and lightweight, but they often have high electrical resistance, poor output power, and low mechanical durability, because of which their thermoelectric performance is poor. We used a facile and rapid solvent evaporation process to prepare a robust carbon nanotube/Bi0.45Sb1.55Te3 (CNT/BST) foam with a high thermoelectric figure of merit (zT). The BST sub‐micronparticles effectively create an electrically conductive network within the three‐dimensional porous CNT foam to greatly improve the electrical conductivity and the Seebeck coefficient and reinforce the mechanical strength of the composite against applied stresses. The CNT/BST foam had a zT value of 7.8 × 10−3 at 300 K, which was 5.7 times higher than that of pristine CNT foam. We used the CNT/BST foam to fabricate a flexible TEG with an internal resistance of 12.3 Ω and an output power of 15.7 µW at a temperature difference of 21.8 K. The flexible TEG showed excellent stability and durability even after 10,000 bending cycles. Finally, we demonstrate the shapeability of the CNT/BST foam by fabricating a concave TEG with conformal contact on the surface of a cylindrical glass tube, which suggests its practical applicability as a thermal sensor.https://doi.org/10.1002/cey2.6503D porous foamCNT/BST nanocompositeflexible thermoelectric generatorrobust property |
| spellingShingle | Myeong Hoon Jeong Eun Jin Bae Byoungwook Park Jong‐Woon Ha Mijeong Han Young Hun Kang High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam Carbon Energy 3D porous foam CNT/BST nanocomposite flexible thermoelectric generator robust property |
| title | High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam |
| title_full | High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam |
| title_fullStr | High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam |
| title_full_unstemmed | High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam |
| title_short | High‐performance and flexible thermoelectric generator based on a robust carbon nanotube/BiSbTe foam |
| title_sort | high performance and flexible thermoelectric generator based on a robust carbon nanotube bisbte foam |
| topic | 3D porous foam CNT/BST nanocomposite flexible thermoelectric generator robust property |
| url | https://doi.org/10.1002/cey2.650 |
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