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Neidhardt, Jonathan and Henke, Moritz and Bessler, W.G. (2011) Kinetic Modeling of Nickel Oxidation in SOFC Anodes. In: ECS Transactions, 35 (1), pp. 1621-1629. 219th ECS Meeting & SOFC-XII, 2011-05-01 - 2011-05-06, Montreal, QC, Canada. doi: 10.1149/1.3570148.
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Abstract
Understanding the mechanisms of performance degradation is of key importance for increasing the lifetime of solid oxide fuel cells (SOFC). The aim of this work is to achieve a deeper understanding of the processes leading to nickel oxidation at Ni/YSZ composite anodes. We present a kinetic model of chemical nickel oxidation which was integrated into a two-dimensional model of an anode-supported single cell. The feedback between nickel oxidation and cell performance was modeled by taking into account both, a loss in kinetic performance (via reducing three-phase boundary length) and a reduction in gas-phase diffusivity (via porosity decrease upon solid volume expansion). The simulations allow the quantification of nickel oxide formation over time and its influence on the cell performance.
| Item URL in elib: | https://elib.dlr.de/70502/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Paper, Poster) | ||||||||||||||||
| Title: | Kinetic Modeling of Nickel Oxidation in SOFC Anodes | ||||||||||||||||
| Authors: |
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| Date: | 2011 | ||||||||||||||||
| Journal or Publication Title: | ECS Transactions | ||||||||||||||||
| Refereed publication: | No | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| Volume: | 35 | ||||||||||||||||
| DOI: | 10.1149/1.3570148 | ||||||||||||||||
| Page Range: | pp. 1621-1629 | ||||||||||||||||
| Editors: |
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| Series Name: | ECS Transactions | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | nickel oxide, model, solid oxide fuel cell, thermochemical, electrochemical | ||||||||||||||||
| Event Title: | 219th ECS Meeting & SOFC-XII | ||||||||||||||||
| Event Location: | Montreal, QC, Canada | ||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||
| Event Start Date: | 1 May 2011 | ||||||||||||||||
| Event End Date: | 6 May 2011 | ||||||||||||||||
| Organizer: | The Electrochemical Society | ||||||||||||||||
| HGF - Research field: | Energy | ||||||||||||||||
| HGF - Program: | Efficient Energy Conversion (old) | ||||||||||||||||
| HGF - Program Themes: | E EV - Energy process technology (old) | ||||||||||||||||
| DLR - Research area: | Energy | ||||||||||||||||
| DLR - Program: | E EV - Energy process technology | ||||||||||||||||
| DLR - Research theme (Project): | E - Elektrochemische Prozesse (old) | ||||||||||||||||
| Location: | Stuttgart | ||||||||||||||||
| Institutes and Institutions: | Institute of Engineering Thermodynamics > Electrochemical Energy Technology | ||||||||||||||||
| Deposited By: | Neidhardt, Jonathan | ||||||||||||||||
| Deposited On: | 26 Jul 2011 09:55 | ||||||||||||||||
| Last Modified: | 05 Nov 2024 14:04 |
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