Aniline-pyrrole Copolymer/SWCNT thermoelectric composites from electrochemical polymerization. (October 2021)

• Record Type: Journal Article
• Authors: Lu, Wentao; Luo, Qunyi; Yin, Sixing; Wu, Xin; Guo, Cun-Yue
• Is Part Of: Composites communications. Volume 27(2021)
• Publication Date: 2021-10
• Subjects: Aniline-pyrrole copolymer -- SWCNTs -- Thermoelectric composites -- Electropolymerization
• DOI: 10.1016/j.coco.2021.100860
• Languages: English
• ISSNs: 2452-2139

Abstract

Abstract: Aniline-pyrrole copolymer (poly(ANi- co -Py)) electropolymerized on conductive glass was ultrasonically mixed with single-walled carbon nanotubes (SWCNTs) to prepare poly(ANi- co -Py)/SWCNT thermoelectric (TE) composites. Effects of SWCNTs contents and reaction parameters on morphology, structure, and TE properties of composites are investigated. In the as-prepared flexible poly(ANi- co -Py)/SWCNT composite films, SWCNTs and poly(ANi- co -Py) are fully entangled and tightly bonded. The highest electrical conductivity ( σ ) of 1035.3 ± 9.0 S cm −1 is obtained at 60 wt% of SWCNTs. The maximal Seebeck coefficient ( S ) of 33.0 ± 3.2 μ V K −1 appears at 90 wt% SWCNTs. Thus, The peak room temperature power factor (PF) of the composites is 83.2 ± 3.3 μ W m −1 K −2 at 60 wt% SWCNTs. Improved TE performance of the composites reflects increased chain ordering and enhanced interaction between SWCNTs and poly(ANi- co -Py). Graphical abstract: Aniline-Pyrrole Copolymer/SWCNT Thermoelectric Composites from Electrochemical Polymerization. Image 1 Highlights: Aniline-pyrroline copolymer (Poly(ANi- co -Py)) was formed on conductive glass by electrochemical polymerization. Flexible films of Poly(ANi- co -Py)/SWCNT thermoelectric composite were constructed by physical mixing. Room temperature power factor of 83.2 μ W m −1 K −2 was achieved for as-prepared Poly(ANi- co -Py)/SWCNT thermoelectric composite with SWCNTs loading of 60 wt%.