The effect of thermal treatment on the resistance of LSCF electrodes on gadolinia doped ceria electrolytes

被引：104

作者：

Waller, D

Lane, JA

Kilner, JA

Steele, BCH

机构：

[1] Department of Materials, Imp. Coll. Sci., Technol. and Med., London SW7 2BP, Prince Consort Road

来源：

SOLID STATE IONICS | 1996年 / 86-8卷 / pt 2期

基金：

英国工程与自然科学研究理事会;

关键词：

solid oxide fuel cell; perovskite; cerium oxide electrolyte; ionic conductor-oxygen; fuel cell;

D O I：

10.1016/0167-2738(96)00362-1

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 effect of thermal treatment on the structure and electrical characteristics of La1-xSrxFe1-yCoyO3-delta (LSCF) electrodes on Ce0.9Gd0.1O1.95 (CGO) electrolytes has been investigated. Low calcination temperatures and short sintering times leads to the formation of a cubic A-site deficient perovskite, with the composition La0.6Sr0.13Co0.2Fe0.8O2.52, which exhibits a low electrode resistance. Higher calcination temperatures and longer sintering times leads to the incorporation of strontium, derived from the decomposition of SrCO3, into the perovskite structure, producing a stoichiometric rhombohedral perovskite. Electrodes containing a larger proportion of the stoichiometric perovskite had a higher resistance than those consisting largely of the A-site deficient perovskite.

引用

页码：767 / 772

页数：6

共 9 条

[1]

Anderson H. U., 1995, Proceedings of the Fourth International Symposium on Solid Oxide Fuel Cells (SOFC-IV), P375

[2]

BECK CW, 1950, AM MINERAL, V35, P985

[3]

CHEN CC, 1993, 3RD P INT S SOL OX F, P252

[4] GLYCINE NITRATE COMBUSTION SYNTHESIS OF OXIDE CERAMIC POWDERS [J].

CHICK, LA ;

PEDERSON, LR ;

MAUPIN, GD ;

BATES, JL ;

THOMAS, LE ;

EXARHOS, GJ .

MATERIALS LETTERS, 1990, 10 (1-2) :6-12

[5]

LANE JA, 1994, ELECTROCERAMICS PROD, V52, P264

[6] LOW-COST OXYGEN ELECTRODE MATERIAL [J].

MEADOWCROFT, DB .

NATURE, 1970, 226 (5248) :847-+

[7]

Pechini M.P, 1967, US Pat. Off., Patent No. [3330697, 3,330,697]

[8]

TAU LW, 1993, P 3 INT S SOFC, P241

[9]

WALLER D, 1995, 1 INT S CER MEMBR 18

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