Electrode Reoxidation in Solid-Oxide Cells: Detailed Modeling of Nickel Oxide Film Growth
- The lifetime and performance of solid-oxide fuel cells (SOFC) and electrolyzer cells (SOEC) can be significantly degraded by oxidation of nickel within the electrode and support structures. This paper documents a detailed computational model describing nickel oxide (NiO) formation as a growing film layer on top of the nickel phase in Ni/YSZ composite electrodes. The model assumes that theThe lifetime and performance of solid-oxide fuel cells (SOFC) and electrolyzer cells (SOEC) can be significantly degraded by oxidation of nickel within the electrode and support structures. This paper documents a detailed computational model describing nickel oxide (NiO) formation as a growing film layer on top of the nickel phase in Ni/YSZ composite electrodes. The model assumes that the oxidation rate is controlled by transport of ions across the film (Wagner's theory). The computational model, which is implemented in a two-dimensional continuum framework, facilitates the investigation of alternative chemical reaction and transport mechanisms. Model predictions agree well with a literature experimental measurement of oxidation-layer growth. In addition to providing insight in interpreting experimental observations, the model provides a quantitative predictive capability for improving electrode design and controlling operating conditions.…
Document Type: | Article (reviewed) |
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Zitierlink: | https://opus.hs-offenburg.de/1831 | Bibliografische Angaben |
Title (English): | Electrode Reoxidation in Solid-Oxide Cells: Detailed Modeling of Nickel Oxide Film Growth |
Author: | Jonathan Philipp Neidhardt, Robert J. Kee, Wolfgang G. BesslerStaff MemberORCiDGND |
Year of Publication: | 2013 |
Creating Corporation: | Electrochemical Society |
First Page: | 2573 |
Last Page: | 2582 |
Parent Title (English): | ECS Transactions |
Volume: | 57 |
Issue: | 1 |
ISSN: | 1938-5862 |
DOI: | https://doi.org/10.1149/05701.2573ecst |
URL: | https://elib.dlr.de/84934/1/Neidhardt_ECStrans_2013.pdf |
Language: | English | Inhaltliche Informationen |
Institutes: | Forschung / INES - Institut für nachhaltige Energiesysteme |
Fakultät Elektrotechnik und Informationstechnik (E+I) (bis 03/2019) | |
Institutes: | Bibliografie |
GND Keyword: | Hochtemperaturbrennstoffzelle; Nickel; Oxidation | Formale Angaben |
Open Access: | Closed Access |
Licence (German): | Urheberrechtlich geschützt |