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Research Article | Open Access

Highly efficient and wearable thermoelectric composites based on carbon nanotube film/polyaniline

Jing Huang, Xiaohua Liu,( ), Yong Du,( )
School of Materials Science and Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China

Peer review under responsibility of The Chinese Ceramic Society.

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Graphical Abstract

Abstract

Polyaniline (PANI) was prepared by in-situ polymerization and compounded on the two-dimensional network structural multi-walled carbon nanotube film (CNTF). Compared with the CNT/PANI composites fabricated by using CNT powders or dispersions, the compact and continuous network structure of CNTF/PANI is beneficial to both the thermoelectric and mechanical properties of the composites. The resultant CNTF/PANI composites with PANI polymerization time of 5 h obtain an electrical conductivity of 1338.4 S/cm and Seebeck coefficient of 63.3 μV/K at 360 K, which are 168.7% and 5.7% higher than those of the CNTF (498.1 S/cm and 59.9 μV/K at 360 K). Consequently, a maximum power factor of 536.8 μW·m−1·K−2 at 360 K is acquired, which is about 2 times higher than that of CNTF (181.7 μW·m−1·K−2 at 360 K). The electrical conductivity of the composites could maintain 93.3% after being bent for 500 times, indicating the excellent flexibility. The tensile strength, Young's Modulus and toughness of CNTF/PANI composites (232.3 MPa, 3.6 GPa and 20.1 MJ/m3, respectively) are 3.5, 2.6 and 2.1 times of those of the CNTF. The flexible, free-standing, lightweight and high-strength CNTF/PANI composites reveal the excellent thermoelectric performance, which are promising in the applications in wearable thermoelectric devices.

Keywords

Mechanical propertiesThermoelectric performancePolyanilineCarbon nanotube film

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Journal of Materiomics
Volume 10 Issue 1,
January 2024
Pages 173-178
DOI: 10.1016/j.jmat.2023.04.014
Cite this article:
Huang J, Liu X, Du Y. Highly efficient and wearable thermoelectric composites based on carbon nanotube film/polyaniline. Journal of Materiomics, 2024, 10(1): 173-178. https://doi.org/10.1016/j.jmat.2023.04.014

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Received: 23 November 2022
Revised: 02 April 2023
Accepted: 14 April 2023
Published: 16 June 2023
© 2023

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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