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

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

Porous polyaniline (PANI)-coated multi-walled carbon nanotube (MWNT) core/shell nanohybrids were fabricated through in situ polymerization and subsequently assembled into macroscopic composites. N2 adsorption/desorption analysis indicated that the volume of nanopores increased significantly, which c...

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Veröffentlicht in:Nanotechnology 2012-09, Vol.23 (38), p.385701-385701
Hauptverfasser: Zhang, Kun, Davis, Marauo, Qiu, Jingjing, Hope-Weeks, Louisa, Wang, Shiren
Format: Artikel
Sprache:eng
Schlagworte:
Aniline Compounds - chemistry
Coefficients
Electric Conductivity
Electric Power Supplies
Electromagnetic Fields
Energy Transfer
Materials Testing
Multi wall carbon nanotubes
Nanocomposites
Nanomaterials
Nanostructure
Nanotubes, Carbon - chemistry
Nanotubes, Carbon - ultrastructure
Organic materials
Particle Size
Porosity
Shells
Thermal Conductivity
Thermoelectricity
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Zusammenfassung:Porous polyaniline (PANI)-coated multi-walled carbon nanotube (MWNT) core/shell nanohybrids were fabricated through in situ polymerization and subsequently assembled into macroscopic composites. N2 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 μV 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 (
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/23/38/385701