Doped-Ceria Diffusion Barriers Prepared by Infiltration for Solid Oxide Fuel Cells
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To stabilize solid oxide fuel cells cathodes prepared by infiltration of La0.8Sr0.2CoO3 (LSCo) into porous yttria-stabilized zirconia (YSZ), a coating of Sm-doped ceria (SDC) was first deposited onto the YSZ scaffold. The dense SDC coating was prepared by infiltration with aqueous solutions of SM(NO3)3 and Ce(NO3)3, followed by calcination to 1473 K. The SDC coating prevented ~ 20 mΩ cm2, at 973 K, with acceptable degradation after heating to 1373 K.
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Suggested Citation: Küngas, R., Bidrawn, F. Vohs, J.M. and Gorte, R.J. (2010). "Doped-Ceria Diffusion Barriers Prepared by Infiltration for Solid Oxide Fuel Cells." Electrochemical and Solid-State Letters. 13 (8) B87-B90. © The Electrochemical Society, Inc. 2010. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in Electrochemical and Solid-State Letters. Publisher URL: http://dx.doi.org/10.1149/1.3432253