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Chemical Alloying and Characterization of Nanocrystalline Co1-xNixSb3-yTey Skutterudites (Contributo in atti di convegno)

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Label

Chemical Alloying and Characterization of Nanocrystalline Co1-xNixSb3-yTey Skutterudites (Contributo in atti di convegno) (literal)

Anno

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Alternative label

Bertini L., Billquist K., Christensen M., Gatti C., Holmgren L., Iversen B., Mueller E., Muhammed M., Noriega G., Palmqvist A., Platzek D., Rowe D.M., Saramat A., Stiewe C., Toprak M., Williams S.G., Zhang Y. (2003)
Chemical Alloying and Characterization of Nanocrystalline Co1-xNixSb3-yTey Skutterudites
in XXII Int. Conf. on Thermoelectrics (2003), La Grande Motte, France, 17-21 Aug. 2003, La Grande Motte, Francia, 2003
(literal)

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Bertini L., Billquist K., Christensen M., Gatti C., Holmgren L., Iversen B., Mueller E., Muhammed M., Noriega G., Palmqvist A., Platzek D., Rowe D.M., Saramat A., Stiewe C., Toprak M., Williams S.G., Zhang Y. (literal)

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Pagina fine

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Source: Proceedings ICT'03. 22nd International Conference on Thermoelectrics (IEEE Cat. No.03TH8726) (literal)

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Rivista

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Proceedings, pages 117-120, IEEE Catalog Number 03TH8726, ISBN 0-7803-8301-X, ISSN 1094-2734. (literal)

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L. Bertini1, K. Billquist2, M. Christensen3, C. Gatti1, L. Holmgren4, B. Iversen3, E. Mueller5, M. Muhammed2, G. Noriega6, A. Palmqvist7, D. Platzek5, D.M. Rowe8, A. Saramat7, C. Stiewe5, M. Toprak2, S.G. Williams8, Y. Zhang2 1 Istituto di Scienze e Tecnologie Molecolari (ISTM), Via Camillo Golgi 19, 20133 Milano, Italy 2 Royal Institute of Technology, Materials Chemistry Division, SE-10044 Stockholm, Sweden 3 University of Aarhus, Department of Chemistry, DK-8000 C Aarhus, Denmark 4 LEGELAB, SE-451 44 Uddevalla, Sweden 5 German Aerospace Center (DLR), Institute of Materials Research, D-51170 Cologne, Germany 6 CIDETE Ingenieros SL, E-08800 Vilanova (Barcelona), Spain 7 Chalmers University of Technology, Dept. Applied Surface Chemistry, Goteborg, Sweden 8 NEDO Laboratory for Thermoelectric Engineering (NEDO), Cardiff, UK (literal)

Titolo

Chemical Alloying and Characterization of Nanocrystalline Co1-xNixSb3-yTey Skutterudites (literal)

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Abstract

Novel chemical alloying approach has been developed for the fabrication of nanocrystalline Co1-xNixSb3-yTey skutterudites. The approach has compromised solution chemical synthesis and thermochemical processing under controlled conditions. All of the required elements, Co, Ni, Sb and Te were coprecipitated from an aqueous solution of their salts to produce a precursor with a well-defined composition, fine particle size, high homogeneity, low crystallinity and high reactivity. After calcination and hydrogen reduction of the precursor at moderate temperature of 450 oC for 2 hrs, these elements were alloyed into Co1-xNixSb3-yTey skutterudite of high purity and nano-grain size. These nanocrystalline materials have demonstrated very low thermal conductivities and enhanced thermoelectric performance. Thermal conductivity values of skutterudite have been reduced by 25-75% over polycrystalline materials. With a combined doping by Ni and Te, a ZT value of 0.65 at 700 K has been obtained for the sample of Co0.92Ni0.08Sb2.988Te0.012. (literal)

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