Ca-doped RCoO3 (R = Gd, Sm, Nd, Pr) as thermoelectric materials

被引：43

作者：

Moon, JW ^{[1
]}

Seo, WS

Okabe, H

Okawa, T

Koumoto, K

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Appl Chem, Nagoya, Aichi 4648603, Japan

[2] Daiken Chem Co Ltd, Osaka 5360011, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2000年 / 10卷 / 09期

关键词：

D O I：

10.1039/b003964k

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：

The electrical resistivity and Seebeck coefficient of (R0.9Ca0.1)CoO3 (R = Gd, Sm, Nd, Pr) rapidly decrease with increasing ionic radius of the rare-earth element, and the Seebeck coefficients (p-type) are fairly high at low temperatures and attain low and constant values at high temperatures; (Pr0.9Ca0.1)CoO3 shows the highest figure-of-merit, 1.3 x 10(-4) K-1 at 85 degrees C, although this rapidly decreases with temperature above 300 degrees C due to the decreasing Seebeck coefficient and increasing electronic thermal conductivity.

引用

页码：2007 / 2009

页数：3

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