Stability, chemical compatibility and electrochemical performance of GdBaCo2O5+x layered perovskite as a cathode for intermediate temperature solid oxide fuel cells

被引：116

作者：

Tarancon, A. ^{[1
,2
]}

Pena-Martinez, J. ^{[2
]}

Marrero-Lopez, D. ^{[2
]}

Morata, A. ^{[1
]}

Ruiz-Morales, J. C. ^{[2
]}

Nunez, P. ^{[2
]}

机构：

[1] Univ Barcelona, Dept Elect, EME XaRMAE IN2UB, E-08028 Barcelona, Spain

[2] Univ La Laguna, Dept Inorgan Chem, Tenerife 38200, Spain

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 40期

关键词：

SOFC; Cathode; Layered perovskite; GBCO; LSGM; YSZ; CGO;

D O I：

10.1016/j.ssi.2008.09.016

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：

Stability under atmospheres containing CO2 and chemical compatibility of GdBaCo2O5+x with different oxide-ion conductors (8 mol% Y2O3-ZrO2, La0.8Sr0.2Ga0.8Mg0.2O3-delta and Ce0.9Gd0.1O1.95) have been studied in order to evaluate its suitability as a cathode material for Solid Oxide Fuel Cells (SOFCs). Thermal evolution of X-ray diffraction patterns of GdBaCo2O5+x in atmospheres with different contents of carbon dioxide (500 ppm to 100% CO) was used to determine the stability of this compound, which is susceptible to carbonate due to the presence of Ba. Remarkable stability under air conditions for long periods of time (100 h) at different temperatures of interest (500, 600 and 700 degrees C) was observed. Chemical compatibility with different electrolytes was evaluated analysing the evolution with calcination temperature (800-1200 degrees C) of the X-ray diffraction patterns of intimate mixtures of GdBaCo2O5+x with each electrolyte. Electrochemical characterization by means of impedance spectroscopy as a part of optimized symmetrical cells (GdBaCo2O5+x/electrolyte/GdBaCo2O5+x) were carried out yielding excellent performance for La0.8Sr0.2Ga0.8Mg0.2O3-delta and Ce0.9Gd0.1O1.95 electrolyte-based cells. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2372 / 2378

页数：7

共 20 条

[1] Ferromagnetism in Ba5Co5O14:: A structural, transport, thermal, and magnetic study -: art. no. 144402 [J].

Boulahya, K ;

Parras, M ;

González-Calbet, JM ;

Amador, U ;

Martínez, JL ;

Tissen, V ;

Fernández-Díaz, MT .

PHYSICAL REVIEW B, 2005, 71 (14)

[2] Recent advances in materials for fuel cells [J].

Brandon, NP ;

Skinner, S ;

Steele, BCH .

ANNUAL REVIEW OF MATERIALS RESEARCH, 2003, 33 :183-213

[3] LATTICE-PARAMETERS AND DENSITIES OF RARE-EARTH-OXIDE DOPED CERIA ELECTROLYTES [J].

HONG, SJ ;

VIRKAR, AV .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (02) :433-439

[4]

Johnson D., 2002, ZVIEW ZPLOT SOFTWARE

[5] Rapid oxygen ion diffusion and surface exchange kinetics in PrBaCo2O5+x with a perovskite related structure and ordered A cations [J].

Kim, G. ;

Wang, S. ;

Jacobson, A. J. ;

Reimus, L. ;

Brodersen, P. ;

Mims, C. A. .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (24) :2500-2505

[6] INTERACTIONS BETWEEN A THICK-FILM LAMNO3 CATHODE AND YSZ SOFC ELECTROLYTE DURING HIGH-TEMPERATURE AGING [J].

KUSCER, D ;

HOLC, J ;

HROVAT, M ;

BERNIK, S ;

SAMARDZIJA, Z ;

KOLAR, D .

SOLID STATE IONICS, 1995, 78 (1-2) :79-85

[7] Effect of Co addition on the lattice parameter, electrical conductivity and sintering of gadolinia-doped ceria [J].

Lewis, GS ;

Atkinson, A ;

Steele, BCH ;

Drennan, J .

SOLID STATE IONICS, 2002, 152 :567-573

[8] Structural and magnetic studies of ordered oxygen-deficient perovskites LnBaCo2O5+δ, closely related to the "112" structure [J].

Maignan, A ;

Martin, C ;

Pelloquin, D ;

Nguyen, N ;

Raveau, B .

JOURNAL OF SOLID STATE CHEMISTRY, 1999, 142 (02) :247-260

[9] Effects of firing conditions and addition of Co on bulk and grain boundary properties of CGO [J].

Pérez-Coll, D ;

Núñez, P ;

Abrantes, JCC ;

Fagg, DP ;

Kharton, VV ;

Frade, JR .

SOLID STATE IONICS, 2005, 176 (37-38) :2799-2805

[10] Materials for lower temperature solid oxide fuel cells [J].

Ralph, JM ;

Schoeler, AC ;

Krumpelt, M .

JOURNAL OF MATERIALS SCIENCE, 2001, 36 (05) :1161-1172

← 1 2 →