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Title: Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb{sub 3}

Abstract

Thermoelectric properties of nanostructured skutterudite CoSb{sub 3} have been reported. Nanosized CoSb{sub 3} powders were synthesized through a solvothermal route. The bulk materials with average grain sizes of 250 and 150 nm were prepared by hot pressing and spark plasma sintering from the solvothermally synthesized CoSb{sub 3} powders. Both the samples show n-type conduction and the thermal conductivities are reduced compared with that of the sample prepared by the melt-annealing/hot pressing method. A thermoelectric figure of merit of 0.61 has been obtained for the unfilled CoSb{sub 3} skutterudite by spark plasma sintering, which indicates that nanostructuring is an effective way to improve the thermoelectric properties of skutterudite compounds.

Authors:
; ; ;  [1];  [2]
  1. State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 (China)
  2. (Singapore)
Publication Date:
OSTI Identifier:
20982733
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 101; Journal Issue: 5; Other Information: DOI: 10.1063/1.2436927; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; ANTIMONIDES; COBALT COMPOUNDS; ELECTRIC CONDUCTIVITY; GRAIN SIZE; HOT PRESSING; NANOSTRUCTURES; PARTICLES; PLASMA; POWDERS; SINTERING; THERMAL CONDUCTIVITY; THERMOELECTRIC PROPERTIES; THERMOELECTRICITY

Citation Formats

Mi, J. L., Zhu, T. J., Zhao, X. B., Ma, J., and School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore. Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb{sub 3}. United States: N. p., 2007. Web. doi:10.1063/1.2436927.
Mi, J. L., Zhu, T. J., Zhao, X. B., Ma, J., & School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore. Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb{sub 3}. United States. doi:10.1063/1.2436927.
Mi, J. L., Zhu, T. J., Zhao, X. B., Ma, J., and School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore. Thu . "Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb{sub 3}". United States. doi:10.1063/1.2436927.
@article{osti_20982733,
title = {Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb{sub 3}},
author = {Mi, J. L. and Zhu, T. J. and Zhao, X. B. and Ma, J. and School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore},
abstractNote = {Thermoelectric properties of nanostructured skutterudite CoSb{sub 3} have been reported. Nanosized CoSb{sub 3} powders were synthesized through a solvothermal route. The bulk materials with average grain sizes of 250 and 150 nm were prepared by hot pressing and spark plasma sintering from the solvothermally synthesized CoSb{sub 3} powders. Both the samples show n-type conduction and the thermal conductivities are reduced compared with that of the sample prepared by the melt-annealing/hot pressing method. A thermoelectric figure of merit of 0.61 has been obtained for the unfilled CoSb{sub 3} skutterudite by spark plasma sintering, which indicates that nanostructuring is an effective way to improve the thermoelectric properties of skutterudite compounds.},
doi = {10.1063/1.2436927},
journal = {Journal of Applied Physics},
number = 5,
volume = 101,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}