Thermoelectric Properties of Bulk FeSb2 and the Composite of FeSb2 and CoSb3 Prepared by Sintering

Ke Gao Liu; Jing Li

doi:10.4028/www.scientific.net/AMM.71-78.3741

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 71-78Thermoelectric Properties of Bulk FeSb2 and the...

Thermoelectric Properties of Bulk FeSb₂ and the Composite of FeSb₂ and CoSb₃ Prepared by Sintering

Abstract:

For investigating the thermoelectric properties, bulk FeSb₂ and the composite of CoSb₃:FeSb₂=7:3 was prepared via sintering. The phases of samples were analyzed by X-ray diffraction and their thermoelectric properties were tested by electric constant instrument and laser thermal constant instrument. Experimental results show that, bulk FeSb₂ and the composite of CoSb₃:FeSb₂=7:3 are P-type semiconductor materials. The electric resistivity of bulk FeSb₂ sample increases with temperature rising while that of the composite (CoSb₃:FeSb₂=7:3) decreases with temperature rising. The Seebeck coefficient of the composite (CoSb₃:FeSb₂=7:3) is evidently higher than that of bulk FeSb₂. The thermal conductivities of the composite (CoSb₃:FeSb₂=7:3) are relatively lower than those of bulk FeSb₂. The ZT values of bulk FeSb₂ sample are lower than those of the composite (CoSb₃:FeSb₂=7:3), that of the later increases with temperature rising at 100~500°C, the maximum value is up to 0.1647.

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Periodical:

Applied Mechanics and Materials (Volumes 71-78)

Pages:

3741-3744

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.71-78.3741

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Online since:

July 2011

Authors:

Ke Gao Liu, Jing Li

Keywords:

Composite, Cosb3, FeSb₂, Thermoelectric Properties

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