High Temperature Thermoelectric Properties of AgPb18+xSbTe20

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Polycrystalline AgPb18+xSbTe20 compounds with different Pb contents (x=1-4) were prepared by melting method and spark plasma sintering techniques. The crystal structure and chemical composition were determined by XRD and EPMA. The thermal conductivity, electrical conductivity and Seebeck coefficient were measured in the temperature range of 300-800K. The dimensionless thermoelectric figure of merit (ZT) of AgPb18+xSbTe20 (x=1-4) increases in the whole temperature range of 300-750K which is different to the pure lead telluride compound. The maximum ZT value reaches 1.03 at 800K.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

857-859

DOI:

10.4028/www.scientific.net/KEM.336-338.857

Citation:

W. B. Zhang et al., "High Temperature Thermoelectric Properties of AgPb18+xSbTe20", Key Engineering Materials, Vols. 336-338, pp. 857-859, 2007

Online since:

April 2007

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Price:

$35.00

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