GdBaCo2O5+x layered perovskite as an intermediate temperature solid oxide fuel cell cathode |
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Authors: | Albert Tarancó n,Alejandro Morata,Guilhem Dezanneau,Stephen J. Skinner,John A. Kilner,Sò nia Estradé ,F. Herná ndez-Ramí rez,F. Peiró ,J.R. Morante |
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Affiliation: | 1. EME/CeRMAE/IN2UB, Department of Electronics, University of Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain;2. Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom;3. Laboratoire SPMS, Ecole Centrale Paris (UMR CNRS 8580), Grande voie des vignes, 92295 Chatenay-Malabry Cedex, France |
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Abstract: | GdBaCo2O5+x (GBCO) was evaluated as a cathode for intermediate-temperature solid oxide fuel cells. A porous layer of GBCO was deposited on an anode-supported fuel cell consisting of a 15 μm thick electrolyte of yttria-stabilized zirconia (YSZ) prepared by dense screen-printing and a Ni–YSZ cermet as an anode (Ni–YSZ/YSZ/GBCO). Values of power density of 150 mW cm−2 at 700 °C and ca. 250 mW cm−2 at 800 °C are reported for this standard configuration using 5% of H2 in nitrogen as fuel. An intermediate porous layer of YSZ was introduced between the electrolyte and the cathode improving the performance of the cell. Values for power density of 300 mW cm−2 at 700 °C and ca. 500 mW cm−2 at 800 °C in this configuration were achieved. |
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Keywords: | SOFC GBCO Cathode Layered perovskite Screen printing |
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