Low thermal conductivity and high thermoelectric figure of merit in n-type BaxYbyCo4Sb12 double-filled skutterudites

被引：373

作者：

Shi, X. ^{[1
]}

Kong, H. ^{[1
]}

Li, C. -P. ^{[1
]}

Uher, C. ^{[1
]}

Yang, J. ^{[2
]}

Salvador, J. R. ^{[3
]}

Wang, H. ^{[4
]}

Chen, L. ^{[5
]}

Zhang, W. ^{[5
]}

机构：

[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[2] Gen Motors R&D Ctr, Mat & Proc Lab, Warren, MI 48090 USA

[3] Optimal Inc, Plymouth, MI 48170 USA

[4] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

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

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 18期

关键词：

D O I：

10.1063/1.2920210

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Filled skutterudites are one of the most promising thermoelectric materials for power generation applications. The choice and concentration of filler atoms are key aspects for achieving high thermoelectric figure of merit values. We report on the high temperature thermoelectric properties in the double-filled skutterudites BaxYbyCo4Sb12. The combination of Ba and Yb fillers inside the voids of the skutterudite structure provides a broad range of resonant phonon scattering and consequently a strong suppression in the lattice thermal conductivity is observed. A dimensionless thermoelectric figure of merit of 1.36 at 800 K is achievable for n-type BaxYbyCo4Sb12. (C) 2008 American Institute of Physics.

引用

页数：3

共 25 条

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Anno H, 2001, MATER RES SOC SYMP P, V691, P49

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