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http://dx.doi.org/10.7317/pk.2013.37.5.638

Thermoelectric Properties of Graphite Nanosheets/Poly(vinylidene fluoride) Composites  

Yoon, Ho Dong (Photo-electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST))
Nam, Seungwoong (Photo-electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST))
Tu, Nguyen D.K. (Photo-electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST))
Kim, Daeheum (Department of Chemical Engineering, Kwangwoon University)
Kim, Heesuk (Photo-electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST))
Publication Information
Polymer(Korea) / v.37, no.5, 2013 , pp. 638-641 More about this Journal
Abstract
GNS/PVDF composites were prepared using graphite nanosheets (GNS) and poly(vinylidene fluoride) (PVDF) for flexible thermoelectric application. We measured the electrical conductivity, thermal conductivity and Seebeck coefficient of GNS/PVDF composites with different contents of GNS and then evaluated the thermoelectric properties of GNS/PVDF composites. The electrical conductivity of GNS/PVDF composites increased from 389 to 1512 S/m with increasing the content of GNS from 10 to 70 wt%. While the electrical conductivity dramatically increased, Seebeck coefficient and thermal conductivity did not show any big difference as the content of GNS increases. In this study, we demonstrated that GNS/PVDF composites improved the thermoelectric properties by decreasing the thermal conductivity due to the phonon scattering at the interfaces between polymer and GNS nanoplatelets.
Keywords
graphite nanosheets; poly(vinylidene fluoride); nanocomposites; thermoelectric properties;
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