Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 38, Issue 2, Pages 1068-1073Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.10.099
Keywords
La0.3Sr0.7Ti1-xCrxO3-delta; Electrical conductivity; Redox stability; Anode; SOFCs
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Funding
- National Nature Science Foundation of China [20973021]
- Nature Science Foundation of Beijing [2102031]
- National Basic Research Program of China [2012CB215404]
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The anode materials La0.3Sr0.7Ti1-xCrxO3-delta (LSTC, x = 0, 0.1, 0.2) with cubic structure were prepared via solid state reaction route. The influence of Cr content on the properties of LSTC as anode and interconnect materials for solid oxide fuel cells (SOFCs) was investigated. The Cr-doping decreased the lattice parameter while increased the sinterability of LSTC materials. The total electrical conductivity decreased with Cr doping level, from 230 S cm(-1) for x = 0 to 53 S cm(-1) for x = 0.2. The total electrical conductivity exhibited good stability and recoverability in alternative atmospheres of air and 5% H-2/Ar, showing excellent redox stability. The cell testing showed that the anode performance of LSTC was enhanced somewhat by Cr doping. The present results indicated that the prepared La0.3Sr0.7Ti1-xCrxO3-delta can be potential anode and interconnect materials for SOFCs. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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