Microkinetic Modeling of Nickel Oxidation in Solid Oxide Cells: Prediction of Safe Operating Conditions
- Oxidation of the nickel electrode is a severe aging mechanism of solid oxide fuel cells (SOFC) and solid oxide electrolyzer cells (SOEC). This work presents a modeling study of safe operating conditions with respect to nickel oxide formation. Microkinetic reaction mechanisms for thermochemical and electrochemical nickel oxidation are integrated into a 2D multiphase model of an anode‐supportedOxidation of the nickel electrode is a severe aging mechanism of solid oxide fuel cells (SOFC) and solid oxide electrolyzer cells (SOEC). This work presents a modeling study of safe operating conditions with respect to nickel oxide formation. Microkinetic reaction mechanisms for thermochemical and electrochemical nickel oxidation are integrated into a 2D multiphase model of an anode‐supported solid oxide cell. Local oxidation propensity can be separated into four regimes. Simulations show that the thermochemical pathway generally dominates the electrochemical pathway. As a consequence, as long as fuel utilization is low, cell operation considerably below electrochemical oxidation limit of 0.704 V is possible without the risk of reoxidation.…
Document Type: | Article (reviewed) |
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Zitierlink: | https://opus.hs-offenburg.de/3846 | Bibliografische Angaben |
Title (English): | Microkinetic Modeling of Nickel Oxidation in Solid Oxide Cells: Prediction of Safe Operating Conditions |
Author: | Jonathan Philipp Neidhardt, Wolfgang G. BesslerStaff MemberORCiDGND |
Year of Publication: | 2019 |
Publisher: | Wiley Online Library |
First Page: | 843 |
Last Page: | 855 |
Parent Title (Multiple languages): | Chemie Ingenieur Technik |
Volume: | 91 |
Issue: | 6 |
ISSN: | 1522-2640 E-ISSN |
ISSN: | 0009-286X P-ISSN |
DOI: | https://doi.org/10.1002/cite.201800197 |
URL: | https://onlinelibrary.wiley.com/doi/full/10.1002/cite.201800197 |
Language: | English | Inhaltliche Informationen |
Institutes: | Forschung / INES - Institut für nachhaltige Energiesysteme |
Institutes: | Bibliografie |
Tag: | Modeling; Nickel oxidation; Numerical simulation; Solid oxide electrolyzer cell; Solid oxide fuel cell | Formale Angaben |
Open Access: | Closed Access |
Licence (German): | Urheberrechtlich geschützt |