Aniline-Pyrrole Copolymer/Swcnt Thermoelectric Composites From Electrochemical Polymerization

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) com-posites. 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 (sigma) 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 mu V K-1 appears at 90 wt% SWCNTs. Thus, The peak room temperature power factor (PF) of the composites is 83.2 +/- 3.3 mu 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).