Nanostructuring and thermoelectric properties of bulk skutterudite compound CoSb3

被引：115

作者：

Mi, J. L.

Zhu, T. J.

Zhao, X. B. ^{[1
]}

Ma, J.

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

[2] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 05期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2436927

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thermoelectric properties of nanostructured skutterudite CoSb3 have been reported. Nanosized CoSb3 powders were synthesized through a solvothermal route. The bulk materials with average grain sizes of 250 and 150 nm were prepared by hot pressing and spark plasma sintering from the solvothermally synthesized CoSb3 powders. Both the samples show n-type conduction and the thermal conductivities are reduced compared with that of the sample prepared by the melt-annealing/hot pressing method. A thermoelectric figure of merit of 0.61 has been obtained for the unfilled CoSb3 skutterudite by spark plasma sintering, which indicates that nanostructuring is an effective way to improve the thermoelectric properties of skutterudite compounds. (c) 2007 American Institute of Physics.

引用

页数：6

共 23 条

[1] MODEL FOR LATTICE THERMAL CONDUCTIVITY AT LOW TEMPERATURES [J].