Synthesis and characterization of La0.6Sr0.4Co0.8Fe0.2O3 films for solid oxide fuel cell cathodes

被引：27
作者：
Dumaisnil, K. [1 ]
Fasquelle, D. [1 ]
Mascot, M. [1 ]
Rolle, A. [2 ]
Roussel, P. [2 ]
Minaud, S. [2 ]
Duponchel, B. [1 ]
Vannier, R-N [2 ]
Carru, J-C [1 ]
机构：
[1] Univ Littoral Cote dOpale, Unite Dynam & Struct Mat Mol, F-62228 Calais, France
[2] Univ Lille Nord France, Unite Catalyse & Chim Solide, Equipe Chim Solide, ENSCL UST Lille 1, F-59652 Villeneuve Dascq, France
来源：
THIN SOLID FILMS | 2014年 / 553卷
关键词：
LSCF; Pechini; SOFC; EIS; ASR; Sol-gel; ELECTROCHEMICAL PERFORMANCE;
D O I：
10.1016/j.tsf.2013.11.136
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
LSCF (La0.6Sr0.4Co0.8Fe0.2O3) thick and thin films were synthesized by using a Pechini method for Solid Oxide Fuel Cell cathode realization to make symmetrical half-cells. A dense LSCF thin film was deposited by spin coating between porous thick LSCF cathode film and gadolinium-doped ceria electrolyte in ceramic form. Atomic force microscopy and scanning electron microscopy characterizations were carried out on these materials to observe the microstructure and measure the thicknesses of the films. DC measurements on LSCF pellets showed that the conductivity of the material is optimized as higher than 100 S/cm at temperatures above 400 degrees C. Electrochemical Impedance Spectroscopy measurements at 700 degrees C have shown that, thanks to the interlayer thin LSCF film, the Area Specific Resistance of the cathode has decreased by 27%. (C) 2013 Elsevier B. V. All rights reserved.
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页码：89 / 92
页数：4
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