Effect of H2S and HCl contaminants on nickel and ceria pattern anode solid oxide fuel cells

Title

Effect of H2S and HCl contaminants on nickel and ceria pattern anode solid oxide fuel cells

 Author

Tabish, A.N. (TU Delft Energy Technology; University of Engineering & Technology Lahore)
Patel, H.C. (TU Delft Energy Technology; SBM Offshore, Schiedam)
Mani, A. (Energy Academy Europe (ESRIG))
Schoonman, J. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Aravind, P.V. (TU Delft Energy Technology; Rijksuniversiteit Groningen)

Date

2022

 Abstract

In this study, with the motivation of elucidating the effect of H2S and HCl on solid oxide fuel cell anodes, nickel and ceria pattern anodes are prepared on yttrium-stabilized zirconia electrolyte, and the effect of H2S and HCl on their performance is tested using electrochemical impedance spectroscopy. However, it has been found that while H2S adversely impacts both nickel and ceria, the poisoning caused is reversible for nickel and only partially reversible for ceria. Poisoning kinetics are similar and fast for both materials, while recovery kinetics are slower for ceria than nickel. High sulfur coverage is the rate-limiting factor inferred from the elementary kinetic modeling. Unlike H2S, the presence of HCl appeared to be favorable for electrochemical oxidation as the polarization resistance of both pattern electrode cells decreased upon feeding HCl contaminated hydrogen gas. Similar behavior has not been reported previously, and the conclusion regarding underlying mechanisms requires further investigation.


 Subject

Ceria
HS
HCl
Pattern anode
SOFC poisoning

 To reference this document use:

http://resolver.tudelft.nl/uuid:a8e45e20-4b95-4341-9a0a-89a99486d883

 DOI

https://doi.org/10.1016/j.electacta.2022.140592

 Embargo date

2023-07-01

 ISSN

0013-4686

 Source

Electrochimica Acta, 423

 Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2022 A.N. Tabish, H.C. Patel, A. Mani, J. Schoonman, P.V. Aravind
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