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        Structure and thermoelectric behavior of polyaniline-based/ CNT-composite

        Abd-Elsalam Ayat,Badr Hussein O.,Abdel-Rehim Ahmed A.,El-Mahallawi Iman S. 한국물리학회 2022 Current Applied Physics Vol.36 No.-

        Thermoelectric materials have the capability of harvesting and converting the heat wasted into useful electrical current. Polymer thermoelectric composites have recently received attention and experienced a rapid development because of their low density, versatility, ease of synthesis and processing and low thermal conductivity. Herein, we report on synthesis and characterization of pristine polyaniline and polyaniline/carbon nanotubes network nanocomposite. In the preparation, aniline was polymerized via a facile chemical oxidative polymerization process, in which 30 wt% multiwall carbon nanotubes were in situ incorporated. Both pristine polyaniline and its composite were examined by XRD. For their thermoelectric performance, Seebeck coefficient and electrical conductivity were characterized using a home-built setup operated by keithley Multimeter (Model:2000). The fabricated composite exhibited superior increase in Seebeck coefficient and power factor to reach 141 μV/K and 0.004 μW/mK2, respectively at 95 ◦C. The corresponding I–V curves were further measured. The current was found to increase substantially to reach 2.2 mA at 1 V; almost one order of magnitude higher when compared to that of the pristine polyaniline sample.

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