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Thermoelectric properties of bismuth-antimony-telluride alloys obtained by reduction of oxide reagents
Abstract
The BieSbeTe alloys with different Bi/Sb/Te ratio were fabricated by an innovative method. For that purpose the oxide reagents were melted at high temperature, then quenched to form pellets, milled to a powder and finally reduced in hydrogen at various temperatures. Complex structures consisting of connected thin layers forming a continuous path between nano- and micrometer size grains have been obtained. The electrical conductivity, Seebeck coefficient and thermal conductivity have been determined over temperature range from 196 to þ300 C in argon atmosphere. The highest figure of merit in the whole temperature range was found for Bi0.4Sb1.6Te3 compound reduced at 400 C for 10 h in hydrogen atmosphere. At a near-room temperature the figure of merit of this compound was found to be equal to 0.7.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
MATERIALS CHEMISTRY AND PHYSICS
no. 177,
pages 353 - 359,
ISSN: 0254-0584 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Bochentyn B., Miruszewski T., Karczewski J., Kusz B.: Thermoelectric properties of bismuth-antimony-telluride alloys obtained by reduction of oxide reagents// MATERIALS CHEMISTRY AND PHYSICS. -Vol. 177, (2016), s.353-359
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.matchemphys.2016.04.039
- Verified by:
- Gdańsk University of Technology
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