Thermodynamic considerations on Cr poisoning in SOFC cathodes

被引：217
作者：
Yokokawa, H. [1 ]
Horita, T. [1 ]
Sakai, N. [1 ]
Yamaji, K. [1 ]
Brito, M. E. [1 ]
Xiong, Y. -P. [1 ]
Kishimoto, H. [1 ]
机构：
[1] AIST, Energy Technol Res Inst, Tsukuba, Ibaraki, Japan
来源：
SOLID STATE IONICS | 2006年 / 177卷 / 35-36期
关键词：
solid oxide fuel cells; chromium poisoning; cathode degradation; overpotential; reaction with chromium vapors; thermodynamic considerations;
D O I：
10.1016/j.ssi.2006.07.055
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：
Chromium poisoning has been considered with an emphasis on the thermodynamic stability of perovskite cathodes. Reactions of cathodes with chromium vapors are categorized mainly into (1) Cr substitution into perovskite B-sites, (2) SrCrO4 formation and (3) Cr2O3 or spinel (CrMn2O4) formation. These can be characterized in terms of the valence stability of transition metal tetravalent ions, which is also crucial in determining the cathode electrochemical reaction mechanism and in cathode-YSZ electrolyte chemical interaction. Observed chromium poisoning was compared with such thermodynamic features with aid of the consideration on the oxygen potential profile and related mass transfer caused by the electrical current. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：3193 / 3198
页数：6
相关论文
共 33 条
  • [1] Interaction between chromia forming alloy interconnects and air electrode of solid oxide fuel cells
    Badwal, SPS
    Deller, R
    Foger, K
    Ramprakash, Y
    Zhang, JP
    [J]. SOLID STATE IONICS, 1997, 99 (3-4) : 297 - 310
  • [2] Enthalpies of formation of LaMO3 perovskites (M = Cr, Fe, Co, and Ni)
    Cheng, JH
    Navrotsky, A
    Zhou, XD
    Anderson, HU
    [J]. JOURNAL OF MATERIALS RESEARCH, 2005, 20 (01) : 191 - 200
  • [3] CHROMIUM, MOLYBDENUM, AND TUNGSTEN - THERMODYNAMIC PROPERTIES, CHEMICAL-EQUILIBRIA, AND STANDARD POTENTIALS
    DELLIEN, I
    HALL, FM
    HEPLER, LG
    [J]. CHEMICAL REVIEWS, 1976, 76 (03) : 283 - 310
  • [4] THERMODYNAMICS OF GAS-PHASE CHROMIUM SPECIES - THE CHROMIUM OXIDES, THE CHROMIUM OXYHYDROXIDES, AND VOLATILITY CALCULATIONS IN WASTE INCINERATION PROCESSES
    EBBINGHAUS, BB
    [J]. COMBUSTION AND FLAME, 1993, 93 (1-2) : 119 - 137
  • [5] Prevention of SOFC cathode degradation in contact with Cr-containing alloy
    Fujita, K
    Ogasawara, K
    Matsuzaki, Y
    Sakurai, T
    [J]. JOURNAL OF POWER SOURCES, 2004, 131 (1-2) : 261 - 269
  • [6] Vaporisation of chromia in humid air
    Gindorf, C
    Singheiser, L
    Hilpert, K
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2005, 66 (2-4) : 384 - 387
  • [7] Chromium vaporisation from Fe,Cr base alloys used as interconnect in fuel cells
    Gindorf, C
    Singheiser, L
    Hilpert, K
    [J]. STEEL RESEARCH, 2001, 72 (11-12): : 528 - 533
  • [8] Chromium vapor species over solid oxide fuel cell interconnect materials and their potential for degradation processes
    Hilpert, K
    Das, D
    Miller, M
    Peck, DH
    Weiss, R
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (11) : 3642 - 3647
  • [9] Imaging of oxygen transport at SOFC cathode/electrolyte interfaces by a novel technique
    Horita, T
    Yamaji, K
    Sakai, N
    Xiong, XP
    Kato, T
    Yokokawa, H
    Kawada, T
    [J]. JOURNAL OF POWER SOURCES, 2002, 106 (1-2) : 224 - 230
  • [10] Phase relations in the system Sr-Cr-O and thermodynamic properties of SrCrO4 and Sr3Cr2O8
    Jacob, KT
    Abraham, KP
    [J]. JOURNAL OF PHASE EQUILIBRIA, 2000, 21 (01): : 46 - 53
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