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Application of exsolved structures as a route to more robust anodes for improved biogas utilisation in SOFCs

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Author(s)

Mark Cassidy, Stephen Richard Gamble, John Thomas Sirr Irvine

School/Research organisations

Abstract

Biogas is a potentially readily available fuel which could be especially useful when combined with the efficient energy conversion in SOFCs. This could be especially important in rural or remote locations where grid electricity is not available. Biogas contains mixture of methane CO2 with inherently high levels of H2S, therefore to improve performance in biogas more robust anodes are required that are more tolerant to both carbon and sulphur. In this paper the use of catalyst nanoparticles exsolved onto porous as a possible method of producing more resistant structures is discussed. All of the options showed good performance in reformed biogas mixtures with the exsolved structures showing improved resistance to carbon deposition. The performance of all dropped when exposed to sulphur, however many were also observed to recover once this was removed and so give encouragement for the development of robust anodes that can withstand sulphur breakthrough without catastrophic stack failure.

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Details

Original languageEnglish
Title of host publication14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society
Pages2029-2036
Number of pages8
ISBN (Print)9781607685395
DOIs
Publication statusPublished - 17 Jul 2015

Publication series

NameECS Transactions
PublisherElectrochemical Society
Number1
Volume68
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

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