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.
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
.
DOI: 10.3724/SP.J.1077.2010.00593
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