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Research at St Andrews

In situ tailored nickel nano-catalyst layer for internal reforming hydrocarbon fueled SOFCs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Author(s)

Jaeha Myung, Dragos Neagu, Mark Tham, John Thomas Sirr Irvine

School/Research organisations

Abstract

Conventional Ni cermet anodes suffer from carbon deposition when they are directly used with hydrocarbon fuels due to the negative effects of pyrolysis and Boudouard reactions. In this work, the use of a non-stoichiometric perovskite, La0.8Ce0.1Ni0.4Ti0.6O3, as a reforming layer in reducing atmospheres led to the surface being highly populated with homogeneously exsolved Ni nano particles. This catalyst layer was applied to Ni-GDC anode supported and ScSZ electrolyte supported cells to prevent carbon deposition and to stabilize operation with dry methane. The catalyst layer showed both excellent attachment to the Ni-GDC anode and resistance to carbon deposition. The performance of the Ni-GDC anode-supported cells with the catalyst layer was about 1.1 W/cm2 in hydrogen fuel which is similar to that seen without the use of a catalyst layer. For the ScSZ electrolyte supported cells, the catalyst layer improved the power density and stability when in operation with dry methane.

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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
Pages1121-1128
Number of pages8
ISBN (Print)9781607685395
DOIs
Publication statusPublished - 17 Jul 2015
EventECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV - Glasgow, United Kingdom
Duration: 26 Jul 201531 Jul 2015

Publication series

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

Conference

ConferenceECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV
CountryUnited Kingdom
CityGlasgow
Period26/07/1531/07/15

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