Thermoelectric properties of porous multi-walled carbon nanotube/polyaniline core/shell nanocomposites.
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Porous polyaniline (PANI)-coated multi-walled carbon nanotube (MWNT) core/shell nanohybrids were fabricated through in situ polymerization and subsequently assembled into macroscopic composites. N(2) adsorption/desorption analysis indicated that the volume of nanopores increased significantly, which could make a significant contribution to phonon scattering. Thermal annealing was also carried out to improve the Seebeck coefficient of the as-produced nanocomposites. The optimal sample showed electrical conductivity of 14.1 S cm(-1), a Seebeck coefficient of 79.8 V K(-1) and thermal conductivity of 0.27 W mK(-1), resulting in a highest figure of merit (ZT) of 0.01 at a very low loading of MWNTs (<1 wt%). These results will provide a potential direction to enhance thermoelectric performance of organic materials and also facilitate the application of organic materials in thermal energy harvesting or cooling.
author list (cited authors)
Zhang, K., Davis, M., Qiu, J., Hope-Weeks, L., & Wang, S.
complete list of authors
Zhang, Kun||Davis, Marauo||Qiu, Jingjing||Hope-Weeks, Louisa||Wang, Shiren