Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb{sub 3}
- State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 (China)
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.
- OSTI ID:
- 20982733
- Journal Information:
- Journal of Applied Physics, Vol. 101, Issue 5; Other Information: DOI: 10.1063/1.2436927; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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