Multi-filling approach for the improvement of thermoelectric properties of skutterudites

被引：12

作者：

Chen, LD ^{[1
]}

Tang, XF ^{[1
]}

Kawahara, T ^{[1
]}

Dyck, JS ^{[1
]}

Chen, W ^{[1
]}

Uher, C ^{[1
]}

Goto, T ^{[1
]}

Hirai, T ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

TWENTIETH INTERNATIONAL CONFERENCE ON THERMOELECTRICS, PROCEEDINGS | 2001年

关键词：

D O I：

10.1109/ICT.2001.979821

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Several skutterudite antimonides filled with atoms of different kinds, (Ba,M)(y)Co4Sb12 (M=Ce, La, Sr), have been synthesized by the combination of solid state reaction and melting methods. Thermal conductivity of (Ba,Sr)(y)Co4Sb12 samples shows a behavior similar to that of BayCo4Sb12. Adding a small amount of Ce or La to the BayCo4Sb12 system is effective in further reducing the lattice thermal conductivity. The difference in the ionic radii of the two co-filler atoms is the most sensitive factor for scattering of phonons. The multi-filled (Ba,M)(y)Co4Sb12 (M=Sr, Ce, La) show lower Seebeck coefficients as compared to the single-filled BayCo4Sb12 having the same total filling fraction. It is expected that higher thermoelectric performance could be realized by further optimization of the composition of filler species.

引用

页码：57 / 60

页数：4

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