Structure and impedance spectroscopy of La0.6Ca0.4Fe0.8Ni0.2O3-δ thin films grown by pulsed laser deposition

被引：16
作者：
de Larramendi, I. Ruiz [1 ]
Ortiz, N. [1 ]
Lopez-Anton, R. [1 ]
de Larramendi, J. I. Ruiz [1 ]
Rojo, T. [1 ]
机构：
[1] Univ Basque Country, Fac Ciencias & Tecnol, Dept Quim Inorgan, E-48080 Bilbao, Spain
来源：
JOURNAL OF POWER SOURCES | 2007年 / 171卷 / 02期
关键词：
SOFC; cathodes; perovskite; pulsed laser deposition; electrochemical impedance spectroscopy;
D O I：
10.1016/j.jpowsour.2007.06.062
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：
Polycrystalline samples of La0.6Ca0.4Fe0.8Ni0.2O3 (LCFN) were prepared by the liquid mix process at 600 degrees C. The structure of the polycrystalline powders was analyzed with X-ray powder diffraction data. The XRD patterns were indexed as the orthoferrite similar to that of PrFeO3 having a single phase orthorhombic perovskite structure (Pbnm). LCFN films have been deposited on yttria-stabilized zirconia (YSZ) single crystal and polycrystalline substrates at 700 degrees C by pulsed laser deposition (PLD) for application to thin film solid oxide fuel cell cathodes. The structure of the films was analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Both films are polycrystalline with a marked texture and present pyramidal grains in the surface with different size distribution. Electrochemical impedance spectroscopy (EIS) measurements of LCFN/YSZ single crystal/LCFN and LCFN/polycrystalline YSZ/LCFN test cells were conducted. The obtained ASR values at 850 degrees C for the single crystal and polycrystalline YSZ cell tests were 1.84 and 1.59 Omega cm(2), respectively. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：747 / 753
页数：7
相关论文
共 24 条
[1]   Thin-film heterostructure solid oxide fuel cells [J].
Chen, X ;
Wu, NJ ;
Smith, L ;
Ignatiev, A .
APPLIED PHYSICS LETTERS, 2004, 84 (14) :2700-2702
[2]   Electrical conductivity relaxation studies of an epitaxial La0.5Sr0.5CoO3-δ thin film [J].
Chen, X ;
Wang, S ;
Yang, YL ;
Smith, L ;
Wu, NJ ;
Kim, BI ;
Perry, SS ;
Jacobson, AJ ;
Ignatiev, A .
SOLID STATE IONICS, 2002, 146 (3-4) :405-413
[3]   Pulsed laser deposition of conducting porous La-Sr-Co-O films [J].
Chen, X ;
Wu, NJ ;
Ritums, DL ;
Ignatiev, A .
THIN SOLID FILMS, 1999, 342 (1-2) :61-66
[4]   Structure and conducting properties of La1-xSrxCoO3-δ films [J].
Chen, X ;
Wu, NJ ;
Ignatiev, A .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1999, 19 (6-7) :819-822
[5]   Chemical degradation of La1-xSrMnO3/Y2O3-stabilized ZrO2 composite cathodes in the presence of current collector pastes [J].
Chervin, C ;
Glass, RS ;
Kauzlarich, SM .
SOLID STATE IONICS, 2005, 176 (1-2) :17-23
[6]   Properties of La1-ySryNi1-xFexO3 as a cathode material for a low-temperature operating SOFC [J].
Chiba, R ;
Yoshimura, F ;
Sakurai, Y .
SOLID STATE IONICS, 2002, 152 :575-582
[7]   An investigation of LaNi1-xFexO3 as a cathode material for solid oxide fuel cells [J].
Chiba, R ;
Yoshimura, F ;
Sakurai, Y .
SOLID STATE IONICS, 1999, 124 (3-4) :281-288
[8]   La, Ca and Fe oxide perovskites: preparation, characterization and catalytic properties for methane combustion [J].
Ciambelli, P ;
Cimino, S ;
Lisi, L ;
Faticanti, M ;
Minelli, G ;
Pettiti, I ;
Porta, P .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 33 (03) :193-203
[9]   Structural and electrical properties of thin films of Pr0.8Sr0.2Fe0.8Ni0.2O3-δ [J].
de Larramendi, I. Ruiz ;
Lopez Anton, R. ;
de Larramendi, J. I. Ruiz ;
Baliteau, S. ;
Mauvy, F. ;
Grenier, J. C. ;
Rojo, T. .
JOURNAL OF POWER SOURCES, 2007, 169 (01) :35-39
[10]   Cathodic reaction mechanism for dense Sr-doped lanthanum manganite electrodes [J].
Endo, A ;
Ihara, M ;
Komiyama, H ;
Yamada, K .
SOLID STATE IONICS, 1996, 86-8 (86-88) :1191-1195
123