Thermoelectric properties of Mg2Si1−xSbx (0 ≤ x ≤ 0.025) synthesized by the high-temperature high-pressure method

被引:0
作者
Yaju Zhu
Jialiang Li
Bo Duan
Yao Li
Pengcheng Zhai
Peng Li
机构
[1] Wuhan University of Technology,Department of Engineering Structure and Mechanics
[2] Wuhan University of Technology,State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
来源
Journal of Materials Science: Materials in Electronics | 2017年 / 28卷
关键词
Thermoelectric Property; PbTe; Seebeck Coefficient; Thermoelectric Material; Lattice Thermal Conductivity;
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摘要
In this work, the thermoelectric materials Mg2Si1−xSbx (0 ≤ x ≤ 0.025) were prepared by high-temperature high-pressure (HTHP) method, and the temperature dependence of the thermoelectric properties were investigated. Compared with other traditional methods, the processing time of the HTHP method was sharply reduced from a few days to <15 min. The samples are synthesized at 1073 K under a pressure of 2.5 GPa. With rising temperature, the electrical transport properties are strengthened, while the thermal conductivity (κ) evidently declines. The maximum thermoelectric figure of merit (ZT) of the Mg2Si0.99Sb0.01 reaches 0.55 at 773 K.
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页码:9535 / 9541
页数:6
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