Thermoelectric properties of perovskite-type oxide La1-xSrxCoO3 (x=0, 0.1) prepared by solid state reactions

被引：28

作者：

Zhou, AJ ^{[1
]}

Zhu, TJ ^{[1
]}

Zhao, XB ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2006年 / 128卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

perovskite oxides; thermoelectric properties; La1-xSrxCoO3; solid state reaction;

D O I：

10.1016/j.mseb.2005.11.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

P-type perovskite oxides La1-xSrxCoO3 (x=0, 0.1) have been prepared by solid state reactions. The phase structures and microstructures of the oxides were investigated and the Seebeck coefficient, electrical conductivity and thermal conductivity were measured from room temperature to 773 K. It was found that Sr substitution can improve the electrical conductivity but significantly reduce the Seebeck coefficient of La1-xSrxCoO3. The thermal conductivity was also reduced after Sr substitution. In the measured temperature range, the maximum ZT values of the oxides were 0.015 at 673 K for x=0 and 0.013 at 423 K for x=0.1. Optimizations of the materials are necessary for the practical applications of La1-xSrxCoO3 oxides. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：174 / 178

页数：5

共 24 条

[1] La0.95Sr0.05CoO3:: An efficient room-temperature thermoelectric oxide [J].

Androulakis, J ;

Migiakis, P ;

Giapintzakis, J .

APPLIED PHYSICS LETTERS, 2004, 84 (07) :1099-1101

[2] Magnetoresistance in thin films and bulks of layered-perovskite La2-2xCa1+2xMn2O7 [J].

Asano, H ;

Hayakawa, J ;

Matsui, M .

APPLIED PHYSICS LETTERS, 1997, 70 (17) :2303-2305

[3]

Bouwmeester H.J.M., 1996, Membrane Science and Technology, V4, P435

[4] A CLASS OF COBALT OXIDE MAGNETORESISTANCE MATERIALS DISCOVERED WITH COMBINATORIAL SYNTHESIS [J].

BRICENO, G ;

CHANG, HY ;

SUN, XD ;

SCHULTZ, PG ;

XIANG, XD .

SCIENCE, 1995, 270 (5234) :273-275

[5] Oxygen permeation of La0.3Sr0.7CoO3-delta [J].

Chen, CH ;

Bouwmeester, HJM ;

vanDoorn, RHE ;

Kruidhof, H ;

Burggraaf, AJ .

SOLID STATE IONICS, 1997, 98 (1-2) :7-13

[6] Thermoelectric cooling and power generation [J].

DiSalvo, FJ .

SCIENCE, 1999, 285 (5428) :703-706

[7]

Goldsmid H. J., 1964, THERMOELECTRIC REFRI

[8] High-performance electrodes for reduced temperature solid oxide fuel cells with doped lanthanum gallate electrolyte II.: La(Sr)CoO3 cathode [J].

Inagaki, T ;

Miura, K ;

Yoshida, H ;

Maric, R ;

Ohara, S ;

Zhang, X ;

Mukai, K ;

Fukui, T .

JOURNAL OF POWER SOURCES, 2000, 86 (1-2) :347-351

[9] Recent developments in oxide ion conductors: Aurivillius phases [J].

Kendall, KR ;

Navas, C ;

Thomas, JK ;

zurLoye, HC .

CHEMISTRY OF MATERIALS, 1996, 8 (03) :642-649

[10] Misfit-layered cobaltite with an anisotropic giant magnetoresistance:: Ca3Co4O9 [J].

Masset, AC ;

Michel, C ;

Maignan, A ;

Hervieu, M ;

Toulemonde, O ;

Studer, F ;

Raveau, B ;

Hejtmanek, J .

PHYSICAL REVIEW B, 2000, 62 (01) :166-175

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