Enhanced chromium tolerance of La0.6Sr0.4Co0.2Fe0.8O3 − δ electrode of solid oxide fuel cells by Gd0.1Ce0.9O1.95 impregnation

Abstract The electrochemical activities and chromium tolerances are studied on single phase La0.6Sr0.4Co0.2Fe0.8O3 − δ (LSCF) and Gd0.1Ce0.9O1.95 (GDC) impregnated LSCF (GDC-LSCF) cathodes of solid oxide fuel cells (SOFCs). GDC-LSCF electrode shows a significantly reduced electrode polarization resistance and more stable performance for the O2 reduction reaction in the presence of chromia-forming metallic interconnect as compared to that on LSCF. The results indicate that the impregnated GDC nanoparticles serve as a barrier layer to enhance the resistance and tolerance of LSCF towards chromium deposition and poisoning.

[1]  S. Jiang,et al.  Impact of volatile boron species on the microstructure and performance of nano-structured (Gd,Ce)O2 infiltrated (La,Sr)MnO3 cathodes of solid oxide fuel cells , 2012 .

[2]  Xinbing Chen,et al.  Highly active and stable (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3−δ (LSBCFN) cathodes for solid oxide fuel cells prepared by a novel mixing synthesis method , 2013 .

[3]  V. Birss,et al.  Chromium Poisoning of LSM-YSZ SOFC Cathodes I. Detailed Study of the Distribution of Chromium Species at a Porous, Single-Phase Cathode , 2004 .

[4]  S. Jiang,et al.  Mechanism of Cr deposition and its application in the development of Cr-tolerant cathodes of solid oxide fuel cells , 2008 .

[5]  J. Herle,et al.  Air side contamination in Solid Oxide Fuel Cell stack testing , 2011 .

[6]  S. Jiang,et al.  Early interaction between Fe–Cr alloy metallic interconnect and Sr-doped LaMnO_3 cathodes of solid oxide fuel cells , 2005 .

[7]  T. Hong,et al.  Oxygen surface exchange properties of La0.6Sr0.4Co0.8Fe0.2O3 − δ coated with SmxCe1 − xO2 − δ , 2012 .

[8]  S. Jiang,et al.  Palladium and ceria infiltrated La0.8Sr0.2Co0.5Fe0.5O3−δ cathodes of solid oxide fuel cells , 2009 .

[9]  S. Jiang,et al.  Deposition of Cr Species at ( La , Sr ) ( Co , Fe ) O3 Cathodes of Solid Oxide Fuel Cells , 2006 .

[10]  Toru Inagaki,et al.  Sulfur Poisoning of SOFC Cathodes , 2009 .

[11]  Michael C. Tucker,et al.  A fundamental study of chromium deposition on solid oxide fuel cell cathode materials , 2006 .

[12]  S. Jiang,et al.  Effect of Strontium Content on Chromium Deposition and Poisoning in Ba1−xSrxCo0.8Fe0.2O3−δ (0.3 ≤x ≤0.7) Cathodes of Solid Oxide Fuel Cells , 2011 .

[13]  S. Jiang,et al.  Deposition of Chromium Species at Sr‐Doped LaMnO3 Electrodes in Solid Oxide Fuel Cells. I. Mechanism and Kinetics , 2000 .

[14]  San Ping Jiang,et al.  Nanoscale and nano-structured electrodes of solid oxide fuel cells by infiltration: Advances and challenges , 2012 .

[15]  A. Perron,et al.  Interface reactivity study between La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) cathode material and metallic interconnect for fuel cell , 2011 .