Sonochemicial Synthesis of AgSbTe2 Thermoelectric Compounds

doi:10.3724/SP.J.1077.2010.00593

Abstract

Abstract: Single-phase AgSbTe₂ powder was synthesized by sonochemicial method combining with deoxidizing heat-treatment. The influences of heat-treatment temperature, time and the initial ratio of starting reactants on the phases of the final products were investigated. Near single-phase AgSbTe₂ ternary powder can be obtained after 2h heat treatment under 500℃, and single-phase AgSbTe₂ can be obtained by changing the initio ratio of the starting reactants. Microstructure analysis shows that nanodots with dimension of 20-50nm are uniformly distributed on the surface of the as-prepared powders with the average size of about 10?m. A dimensionless thermoelectric figure of merit ZT = 1.14 is obtained at 570K for the sample with single phase.

Key words: AgSbTe₂, sonochemicial method, heat treament, thermoelectric materials

CLC Number:

TB34

XU Jing-Jing, DU Bao-Li, ZHANG Wen-Hao, TANG Xin-Feng. Sonochemicial Synthesis of AgSbTe₂ Thermoelectric Compounds[J]. Journal of Inorganic Materials, 2010, 25(6): 593-597.

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Sonochemicial Synthesis of AgSbTe₂ Thermoelectric Compounds

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