Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance
Abstract Solution processability and flexibility still remain major challenges for many thermoelectric (TE) materials, including bismuth telluride (Bi2Te3), a typical and commercially available TE material. Here, we report a new solution‐processed method to prepare a flexible film of a Bi2Te3/single...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
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| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.161 |
| _version_ | 1818950290110414848 |
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| author | Zhijun Chen Haicai Lv Qichun Zhang Hanfu Wang Guangming Chen |
| author_facet | Zhijun Chen Haicai Lv Qichun Zhang Hanfu Wang Guangming Chen |
| author_sort | Zhijun Chen |
| collection | DOAJ |
| description | Abstract Solution processability and flexibility still remain major challenges for many thermoelectric (TE) materials, including bismuth telluride (Bi2Te3), a typical and commercially available TE material. Here, we report a new solution‐processed method to prepare a flexible film of a Bi2Te3/single‐walled carbon nanotube (SWCNT) hybrid, where the dissolved Bi2Te3 ion precursors are mixed with dispersed SWCNTs in solution and recrystallized on the SWCNT surfaces to form a “cement–rebar”‐like architecture. The hybrid film shows an n‐type characteristic, with a stable Seebeck coefficient of −100.00 ± 1.69 μV K−1 in air. Furthermore, an extremely low in‐plane thermal conductivity of ∼0.33 W m−1 K−1 is achieved at 300 K, and the figure of merit (ZT) reaches 0.47 ± 0.02. In addition, the TE performance is independent of mechanical bending. The unique “cement–rebar”‐like architecture is believed to be responsible for the excellent TE performances and the high flexibility. The results provide a new avenue for the fabrication of solution‐processable and flexible TE hybrid films and will speed up the applications of flexible electronics and energy conversion. |
| first_indexed | 2024-12-20T09:16:14Z |
| format | Article |
| id | doaj.art-ff39ea888b3a4cd68beeb21466cabc02 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-12-20T09:16:14Z |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-ff39ea888b3a4cd68beeb21466cabc022022-12-21T19:45:25ZengWileyCarbon Energy2637-93682022-01-014111512810.1002/cey2.161Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performanceZhijun Chen0Haicai Lv1Qichun Zhang2Hanfu Wang3Guangming Chen4College of Materials Science and Engineering Shenzhen University Shenzhen ChinaCollege of Materials Science and Engineering Shenzhen University Shenzhen ChinaDepartment of Materials Science and Engineering City University of Hong Kong Hong Kong ChinaNational Center for Nanoscience and Technology Beijing ChinaCollege of Materials Science and Engineering Shenzhen University Shenzhen ChinaAbstract Solution processability and flexibility still remain major challenges for many thermoelectric (TE) materials, including bismuth telluride (Bi2Te3), a typical and commercially available TE material. Here, we report a new solution‐processed method to prepare a flexible film of a Bi2Te3/single‐walled carbon nanotube (SWCNT) hybrid, where the dissolved Bi2Te3 ion precursors are mixed with dispersed SWCNTs in solution and recrystallized on the SWCNT surfaces to form a “cement–rebar”‐like architecture. The hybrid film shows an n‐type characteristic, with a stable Seebeck coefficient of −100.00 ± 1.69 μV K−1 in air. Furthermore, an extremely low in‐plane thermal conductivity of ∼0.33 W m−1 K−1 is achieved at 300 K, and the figure of merit (ZT) reaches 0.47 ± 0.02. In addition, the TE performance is independent of mechanical bending. The unique “cement–rebar”‐like architecture is believed to be responsible for the excellent TE performances and the high flexibility. The results provide a new avenue for the fabrication of solution‐processable and flexible TE hybrid films and will speed up the applications of flexible electronics and energy conversion.https://doi.org/10.1002/cey2.161Bi2Te3carbon nanotubehybridsolution‐processedthermoelectrics |
| spellingShingle | Zhijun Chen Haicai Lv Qichun Zhang Hanfu Wang Guangming Chen Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance Carbon Energy Bi2Te3 carbon nanotube hybrid solution‐processed thermoelectrics |
| title | Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance |
| title_full | Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance |
| title_fullStr | Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance |
| title_full_unstemmed | Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance |
| title_short | Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance |
| title_sort | construction of a cement rebar nanoarchitecture for a solution processed and flexible film of a bi2te3 cnt hybrid toward low thermal conductivity and high thermoelectric performance |
| topic | Bi2Te3 carbon nanotube hybrid solution‐processed thermoelectrics |
| url | https://doi.org/10.1002/cey2.161 |
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