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Understanding of CO2 electrochemical reduction reaction process via high temperature solid oxide electrolysers

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Irvine_2015_ECS_Understanding.pdf (505.7Kb)
Date
17/07/2015
Author
Yue, Xiangling
Irvine, John Thomas Sirr
Keywords
Catalyst activity
Cathodes
Cermets
Electrodes
Electrolytic reduction
Fuel storage
Metal drawing
Reduction
Regenerative fuel cells
Yttria stabilized zirconia
QD Chemistry
NDAS
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Abstract
The CO2 electrochemical reduction via SOEC was studied for a range of cathode materials in various operational conditions. The influences of the fuel gas composition, operating potential and temperature on cathode behavior are discussed and compared on different cathodes. The dissociative adsorption and surface diffusion of active species from CO2 reduction reaction was found to contribute dominantly to the LSCM-based cathode working in CO2-CO mixtures. Efforts were also made to obtain a high performance and durable cathode for high temperature CO2 electrolyser by employing a gradient LSCM-YSZ cathode and by adopting wet impregnation in cathode preparation. The latter was to more effective in enhancing the cathode electro-catalytic activity. A competitive cathode to Ni-YSZ cermet was fabricated by infiltrating 0.5wt% Pd and GDC into porous LSCM and YSZ layers.
Citation
Yue , X & Irvine , J T S 2015 , Understanding of CO 2 electrochemical reduction reaction process via high temperature solid oxide electrolysers . 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. 3535-3551 , ECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV , Glasgow , United Kingdom , 26/07/15 . https://doi.org/10.1149/06801.3535ecst
 
conference
 
Publication
14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015
DOI
https://doi.org/10.1149/06801.3535ecst
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/10.1149/06801.3535ecst
Description
The authors thank the University of St Andrews and RCUK Energy Supergen programme on H-Delivery and EPSRC Platform and Senior fellowship programs for funding.
Collections
  • Chemistry Research
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/7374

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