Paper Title:
Synthesis and Thermoelectric Properties of Co4-XFeXSb12-YSnY Skutterudites
  Abstract

Co4-xFexSb12-ySny skutterudites were synthesized by mechanical alloying and hot pressing, and thermoelectric properties were examined. The carrier concentration increased by doping and thereby the electrical conductivity increased compared with intrinsic CoSb3. Every specimen had a positive Seebeck coefficient. Fe doping caused a decrease in the Seebeck coefficient but it could be enhanced by Fe/Sn double doping possibly due to charge compensation. The thermal conductivity was desirably very low and this originated from ionized impurity-phonon scattering. Thermoelectric properties were improved remarkably by Fe/Sn doping, and a maximum figure of merit, ZT = 0.5 was obtained at 723 K in the Co3FeSb11.2Sn0.8 specimen.

  Info
Periodical
Edited by
Hyungsun Kim, Jian Feng Yang, Chuleol Hee Han, Somchai Thongtem and Soo Wohn Lee
Pages
65-68
DOI
10.4028/www.scientific.net/MSF.695.65
Citation
K. H. Park, I. H. Kim, "Synthesis and Thermoelectric Properties of Co4-XFeXSb12-YSnY Skutterudites", Materials Science Forum, Vol. 695, pp. 65-68, 2011
Online since
July 2011
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Price
$35.00
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