Thermoelectric properties of porous multi-walled carbon nanotube/polyaniline core/shell nanocomposites

Kun Zhang, Marauo Davis, Jingjing Qiu, Louisa Hope-Weeks, Shiren Wang

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

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 14.1Scm 1, a Seebeck coefficient of 79.8μV K 1 and thermal conductivity of 0.27WmK 1, resulting in a highest figure of merit (ZT) of 0.01 at a very low loading of MWNTs (<1wt%). 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.

Original languageEnglish
Article number385701
JournalNanotechnology
Volume23
Issue number38
DOIs
StatePublished - Sep 28 2012

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