Thermoelectric properties of SmxCo4Sb12 prepared by high pressure and high temperature

被引：18

作者：

Jiang, Y. P. ^{[1
,2
]}

Jia, X. P. ^{[1
]}

Su, T. C. ^{[1
]}

Dong, N. ^{[1
]}

Yu, F. R. ^{[3
]}

Tian, Y. J. ^{[3
]}

Guo, W. ^{[1
]}

Xu, H. W. ^{[1
]}

Deng, L. ^{[1
]}

Ma, H. A. ^{[1
]}

机构：

[1] Jinlin Univ, Natl Lab Superhard Mat, Changchun 130012, Jilin, Peoples R China

[2] Beihua Univ, Dept Phys, Jilin 132013, Peoples R China

[3] Yanshan Univ, Natl Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 493卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Thermoelectric material; Electrical property; High-pressure; X-ray diffraction; TRANSPORT-PROPERTIES; SKUTTERUDITES;

D O I：

10.1016/j.jallcom.2009.12.150

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

SmxCo4Sb12 skutterudite compounds with different Sm addition contents (x = 0.1, 0.2. 0.6, 0.8, 1.0) have been synthesized via the route of high pressure and high temperature (HPHT). In addition, the effect of Sm filling on the thermoelectric properties of SmxCo4Sb12 compounds has been investigated in this paper. All SmxCo4Sb12 compounds exhibit n-type conduction. The temperature dependences of electrical resistivity. Seebeck coefficient have been measured on these compounds in the range of 300-711 K. The experimental results indicate that the Sm doping can help improve their power factors. Among all the samples, Sm0.1Co4Sb12 shows the highest power factor of 23.7 mu W cm(-1) K-2 at 568 K. The thermal conductivity of SmxCo4Sb12 measurements had been performed in the temperature range of 300-711 K. The thermal conductivity of SmxCo4Sb12 is significantly low compared to pure CoSb3. The dimensionless thermoelectric figure of merit ZT increased with increasing temperature in the range of 300-711 K and reached a maximum value of 0.55 for Sm0.1Co4Sb12 at 711 K. (C) 2009 Elsevier By. All rights reserved.

引用

页码：535 / 538

页数：4

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