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

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Irvine_2015_ECS_Insitu.pdf (325.3Kb)
Date
17/07/2015
Author
Myung, Jaeha
Neagu, Dragos
Tham, Mark
Irvine, John Thomas Sirr
Funder
EPSRC
Grant ID
EP/K021036/1
Keywords
QD Chemistry
NDAS
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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.
Citation
Myung , J , Neagu , D , Tham , M & Irvine , J T S 2015 , In situ tailored nickel nano-catalyst layer for internal reforming hydrocarbon fueled SOFCs . in K Eguchi & S C Singhal (eds) , 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015 . ECS Transactions , no. 1 , vol. 68 , Electrochemical Society , pp. 1121-1128 , ECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV , Glasgow , United Kingdom , 26/07/15 . https://doi.org/10.1149/06801.1121ecst
 
conference
 
Publication
14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015
DOI
https://doi.org/10.1149/06801.1121ecst
ISSN
1938-5862
Type
Conference item
Rights
© The Electrochemical Society, Inc. 2015. 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 here: https://dx.doi.org/10.1149/06801.1121ecst
Description
The authors gratefully thank the Engineering and Physical Sciences Research Council (EPSRC) SuperGen Hydrogen Fuel Cells Challenges Flame SOFC Project (Grant No EP/K021036/1) for financial support
Collections
  • Chemistry Research
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/7372

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