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Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration

Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state... Abstract The energy conversion properties of Bi-Sb system thermoelectric materials doped by Ag was investigated. Bi85Sb15 − x Ag x (x = 0, 1, 2, 3, 4) alloys with Ag substitution for Sb were synthesized by mechanical alloying and then pressed under 5 GPa at 523 K for 30 min. The phase structure of the alloys was characterized by Xray diffraction. The electric conductivities and the Seebeck coefficients were measured at the temperature range of 80–300 K. The results reveal that the electric conductivities of the Ag-doped Bi-Sb alloys are highly improved. The power factor of Bi85Sb14Ag1 reaches a maximum value of 2.98×10−3 W/(K2·m) at 255 K, which is about three times that of the un-doped sample Bi85Sb15 at the same temperature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Frontiers in Energy" Springer Journals

Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration

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References (9)

Publisher
Springer Journals
Copyright
2009 Higher Education Press and Springer-Verlag GmbH
ISSN
2095-1701
eISSN
1673-7504
DOI
10.1007/s11708-009-0005-1
Publisher site
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Abstract

Abstract The energy conversion properties of Bi-Sb system thermoelectric materials doped by Ag was investigated. Bi85Sb15 − x Ag x (x = 0, 1, 2, 3, 4) alloys with Ag substitution for Sb were synthesized by mechanical alloying and then pressed under 5 GPa at 523 K for 30 min. The phase structure of the alloys was characterized by Xray diffraction. The electric conductivities and the Seebeck coefficients were measured at the temperature range of 80–300 K. The results reveal that the electric conductivities of the Ag-doped Bi-Sb alloys are highly improved. The power factor of Bi85Sb14Ag1 reaches a maximum value of 2.98×10−3 W/(K2·m) at 255 K, which is about three times that of the un-doped sample Bi85Sb15 at the same temperature.

Journal

"Frontiers in Energy" – Springer Journals

Published: Mar 1, 2009

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