Electrochemical properties and durability of in-situ composite cathodes with SmBa0.5Sr0.5Co2O5+delta for metal supported solid oxide fuel cells

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The electrochemical properties and long-term performance of an in-situ composite cathode comprised of SmBa0.5Sr0.5CO2O5+delta (SBSCO) and Ge(0.9)G(0.1)O(2-delta) (CGO91) are investigated for metal supported solid oxide fuel cell (MS-SOFC) application. The Area Specific Resistance (ASR) of an in-situ composite cathode comprised of 50 wt% of SBSCO and 50 wt% of CG091 (SBSCO:50) is 0.031 Omega cm(2) in the first stage of measurement at 700 degrees C; this value of ASR increases to 0.138 Omega cm(2) after 1000 h. The ASR of SBSCO:50 (in situ sample at 750 degrees C) is 0.014 Omega cm(2) at the initial stage of measurement; the increase of ASR after 1000 h at 750 degrees C is only 0.067 Omega cm(2). These results suggest that the optimum temperature for in-situ firing of an SBSCO:50 cathode sample of MS-SOFC is higher than 700 degrees C, ideally around 750 degrees C. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2017-01
Language
English
Article Type
Article
Keywords

OXYGEN REDUCTION; TEMPERATURE; PERFORMANCE; ELECTRODES; KINETICS; ANODE

Citation

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.42, no.2, pp.1212 - 1220

ISSN
0360-3199
DOI
10.1016/j.ijhydene.2016.10.158
URI
http://hdl.handle.net/10203/223337
Appears in Collection
ME-Journal Papers(저널논문)
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