Synthesis and thermoelectric properties of (Sr,Yb)yCO4Sb12 double filled skutterudites

被引：0
|
作者：
Bai, S. Q. [1 ,2 ]
Zhao, X. Y. [1 ,2 ]
Pei, Y. Z. [1 ,2 ]
Chen, L. D. [1 ]
Zhang, W. Q. [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
ICT'06: XXV INTERNATIONAL CONFERENCE ON THERMOELECTRICS, PROCEEDINGS | 2006年
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
(Sr,Yb)(y)Co4Sb12 double filled skutterudites are synthesized by a melting method and sintered by Spark Plasma Sintering (SPS) technique. Small amount of Yb2O3 and YbSb2 as impurity phases are found with high ytterbium content in the X-ray diffraction patterns of sintered materials. The thermal conductivity, electrical conductivity and Seebeck coefficient are measured from room temperature to 850 K. The influence of different filling fractions of ytterbium on the thermoelectric proper-ties of (Sr,Yb)(y)CO4Sb12 is studied. The lattice thermal conductivity of double filled skutterudites is reduced dramatically as compared to that of Sr single-filled skutterudites with similar filling fractions. An enhancement in power factor and dimensionless thermoelectric figure of merit (ZT) is observed in the double filled skutterudites.
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页码：145 / +
页数：2
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