Flexible thermoelectric nanodevices based on three-dimensional networks of poly(3,4-ethylenedioxythiophene) nanowires and graphene
| Autor: | Yan-Xin Liu, Haihui Liu, Xingxiang Zhang, Pengfei Liu, Zi-Han Tian, Meng-Qi Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Graphene Organic Chemistry Nanowire Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound PEDOT:PSS chemistry law Thermoelectric effect Materials Chemistry 0210 nano-technology Poly(3 4-ethylenedioxythiophene) |
| Zdroj: | High Performance Polymers. 33:657-664 |
| ISSN: | 1361-6412 0954-0083 |
| Popis: | Freestanding poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires (NWs) were synthesized using a facile, self-assembled, micellar soft-template method. Thermoelectric properties of the PEDOT NWs under different reaction conditions were measured, and optimal experimental conditions were confirmed. To obtain preferential thermoelectric performance, PEDOT NWs/graphene composite films with various graphene mass fractions were fabricated. The maximum power factor of the hybrids was observed to reach 42.0 μWm−1K−2 with 3 wt% graphene loading, corresponding to a 200% improvement compared with pure PEDOT NWs. The thermoelectric devices were investigated using the PEDOT NWs/graphene hybrids as a p-type leg and PEDOT NWs/nitrogen-doped graphene as an n-type leg. The device, in series, shows a preferable cooling effect with an approximate temperature decrease of 0.5°C after energization. Our work provides a novel means of fabricating n-type PEDOT hybrids and promotes their practical applications as thermoelectric coolers. These findings indicate a new means of developing high-performance, flexible, organic thermoelectric materials and devices. |
| Databáze: | OpenAIRE |
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