Enhanced Thermoelectric Performance of Synthetic Tetrahedrites

被引：178

作者：

Heo, Jaeseok ^{[1
]}

Laurita, Geneva ^{[1
]}

Muir, Sean ^{[1
]}

Subramanian, M. A. ^{[1
]}

Keszler, Douglas A. ^{[1
]}

机构：

[1] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA

来源：

CHEMISTRY OF MATERIALS | 2014年 / 26卷 / 06期

基金：

美国国家科学基金会;

关键词：

Thermal conductivity - Manganese compounds - Cobalt compounds - Electric power factor - Copper compounds - Thermoelectricity - Zinc compounds;

D O I：

10.1021/cm404026k

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：

Electrical and thermal transport properties of synthetic tetrahedrites Cu10TM2Sb4S13 (TM = Mn, Fe, Co, Ni, Zn) and the solid solution Cu12-xMnxSb4S13 (0 <= x <= 2) have been studied in the context of thermoelectric performance. Among these materials, the parent compound Cu12Sb4S13 exhibits the highest power factor, which is primarily derived from a high electrical conductivity. All substituted derivatives display a significant and uniform reduction in thermal conductivity. Within the TM series, the Mn-substituted sample displays the highest ZT (0.8 at 575 K). Changing the Mn concentration to Cu11MnSb4S13 produces the highest ZT, i.e., 1.13 at 575 K. The relatively high value derives from a favorable balance of low thermal conductivity and a relatively high power factor.

引用

页码：2047 / 2051

页数：5

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