Journal
POLYMER
Volume 253, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2022.125000
Keywords
Thermoelectrics; Non-conjugated polymers; Radical-containing polymers; Single-walled carbon nanotubes
Categories
Funding
- Science, Technology and Innovation Committee of Shenzhen Municipality [JCYJ20180507183413211]
- Hong Kong Research Grants Council [PolyU 15307321]
- RGC Senior Research Fellowship Scheme [SRFS2021-5S01]
- National Natural Science Foundation of China [52073242]
- Hong Kong Polytechnic University [1-ZE1C]
- Research Institute for Smart Energy (CDA2)
- [847S]
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In the last decade, there has been a growing interest in the study of conjugated organic polymers for thermoelectric application. This study focuses on non-conjugated radical polymers (NCRPs) and their potential use in electronic technology. Three metal-containing NCRPs were synthesized and coated with single-walled carbon nanotubes (SWCNTs) to form various polymer composites. The results showed that NCRPs could be a promising material for thermoelectric applications.
In the last decade, there is an intense interest in the study of conjugated organic polymers for thermoelectric (TE) application. Non-conjugated polymers are usually considered as the insulators with no or extremely low electrical conductivity. Nevertheless, non-conjugated radical polymers (NCRPs) are different from those polymers in which they can be widely applied in electronic technology, for example, as battery electrode materials, conductors in solid-state and memory devices, but they have not been used for the TE application. Here, three metal-containing NCRPs P1-P3 with different nitroxide radical moieties were synthesized and coated with single-walled carbon nanotubes (SWCNTs) to form various polymer composites. P2 exhibited the highest electrical conductivity of 1310.0 +/- 3.92 S m(-1) when the SWCNT content reached 60%. P3 had the highest Seebeck coefficient of 62.5 +/- 0.40 mu V K-1 when the SWCNT ratio reached 90%. The highest power factor of 130.1 +/- 1.61 mu W m(-1) K-2 was achieved from the P3/SWCNT composite at the mass ratio of 90%. The results showed that the NCRPs could be one of the potential TE materials of further study.
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