A Strategy for Achieving High-performance with SOFC Ceramic Anodes
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Abstract
A proposal that high solid oxide fuel cell (SOFC) anode performance can be achieved by using a very thin, catalytically active functional layer, with a noncatalytic conduction layer, has been tested. An anode impedance of 0.26 Ω cm2 was obtained at 973 K in humidified H2 using a Ag-paste conduction layer and a 12 µm thick functional layer made from 1 wt % Pd and 40 wt % ceria in yttria-stabilized zirconia. Replacing the Ag paste with a 100 µm layer of porous La0.3Sr0.7TiO3 (LST) had minimal effect on cell performance. The anode concept is flexible and should allow various materials to be used in the functional and the current-collector layers.
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2007-01-19
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Postprint version. Copyright The Electrochemical Society, Inc. 2007. 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, Volume 10, Issue 4, 2007, pages B65–B69. Publisher URL: http://scitation.aip.org/ESL/