Effects of ZnSb and Zn inclusions on the thermoelectric properties of β-Zn4Sb3

被引：110

作者：

Zhang, LT ^{[1
]}

Tsutsui, M ^{[1
]}

Ito, K ^{[1
]}

Yamaguchi, M ^{[1
]}

机构：

[1] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2003年 / 358卷 / 1-2期

基金：

日本学术振兴会;

关键词：

thermoelectric materials; microstructure; electrical transport; heat conduction;

D O I：

10.1016/S0925-8388(03)00074-4

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：

Several hot-pressed samples based on beta-Zn4Sb3 with different amounts of ZnSb or Zn were prepared and their thermoelectric properties were investigated in a temperature range from room temperature (R.T.) to 673 K. A result similar to a previous paper (Caillat et al., J. Phys. Chem. Sol. 58(7) (1997) 1119) was obtained on the thermoelectric properties of single-phase beta-Zn4Sb3. ZnSb has a higher electrical resistivity, Seebeck coefficient and thermal conductivity than beta-Zn4Sb3 does. ZnSb leads to an increase in electrical resistivity and Seebeck coefficient of beta-Zn4Sb3 based materials, roughly in proportion to the amount of ZnSb. Zn does the opposite. However, the power factor of beta-Zn4Sb3 based materials with ZnSb or Zn as a secondary phase is lower than that of beta-Zn4Sb3. Since both ZnSb and Zn increase the thermal conductivity of beta-Zn4Sb3 based materials, the figure of merit of beta-Zn4Sb3 based materials containing ZnSb or Zn as a secondary phase may not exceed that of beta-Zn4Sb3. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：252 / 256

页数：5

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