Effects of mechanical milling and Ag addition on thermoelectric properties of NaxCo2O4

被引：35

作者：

Ito, Mikio ^{[1
]}

Furumoto, Daisuke ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Course Mat Sci & Engn, Suita, Osaka 5650871, Japan

来源：

SCRIPTA MATERIALIA | 2006年 / 55卷 / 06期

关键词：

thermoelectric oxide; mechanical milling; Ag addition; Seebeck coefficient; power factor;

D O I：

10.1016/j.scriptamat.2006.05.034

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of mechanical milling and Ag dispersion on the thermoelectric performance of NaxCo2O4 were investigated. The See-beck coefficient was enhanced by both mechanical milling and Ag addition. Ag addition was effective in reducing the electrical resistivity, resulting in the significantly large power factor. However, the dimensionless figure of merit could not be improved by mechanical milling and Ag addition, because Ag particles around 10 pm in size in the NaxCo2O4 matrix phase significantly increased the thermal conductivity. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：533 / 536

页数：4

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