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Henke, Moritz and Willich, Caroline and Kallo, Josef and Friedrich, K. Andreas (2014) Theoretical study on pressurized operation of solid oxide electrolysis cells. International Journal of Hydrogen Energy, 39, pp. 12434-12439. Elsevier. doi: 10.1016/j.ijhydene.2014.05.185. ISSN 0360-3199.
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Abstract
In this paper the influence of pressure on the performance of solid oxide electrolysis cells is theoretically analyzed in a pressure range between 0.05 and 2 MPa. A previously validated electrochemical model of a solid oxide fuel cell stack is used to predict electrolysis behavior. The effect of pressure on thermodynamics, kinetics and gas diffusion is discussed. It is shown that thermodynamics are negatively influenced by an increase in pressure whereas kinetics and gas transport are improved. Overall pressure effects are therefore only small. At low current density the electrolysis cell shows better performance at low pressure whereas performance improves with pressure at high current densities.
| Item URL in elib: | https://elib.dlr.de/92308/ | ||||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||||
| Title: | Theoretical study on pressurized operation of solid oxide electrolysis cells | ||||||||||||||||||||
| Authors: |
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| Date: | July 2014 | ||||||||||||||||||||
| Journal or Publication Title: | International Journal of Hydrogen Energy | ||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||
| Volume: | 39 | ||||||||||||||||||||
| DOI: | 10.1016/j.ijhydene.2014.05.185 | ||||||||||||||||||||
| Page Range: | pp. 12434-12439 | ||||||||||||||||||||
| Publisher: | Elsevier | ||||||||||||||||||||
| ISSN: | 0360-3199 | ||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||
| Keywords: | Solid oxide electrolysis cell Pressure Power density Efficiency SOEC Pressurized SOEC | ||||||||||||||||||||
| HGF - Research field: | Energy | ||||||||||||||||||||
| HGF - Program: | Efficient Energy Conversion and Use (old) | ||||||||||||||||||||
| HGF - Program Themes: | Fuel Cells (old) | ||||||||||||||||||||
| DLR - Research area: | Energy | ||||||||||||||||||||
| DLR - Program: | E EV - Energy process technology | ||||||||||||||||||||
| DLR - Research theme (Project): | E - Electrochemical Processes (old) | ||||||||||||||||||||
| Location: | Stuttgart | ||||||||||||||||||||
| Institutes and Institutions: | Institute of Engineering Thermodynamics > Electrochemical Energy Technology | ||||||||||||||||||||
| Deposited By: | Friedrich, Prof.Dr. Kaspar Andreas | ||||||||||||||||||||
| Deposited On: | 26 Nov 2014 10:04 | ||||||||||||||||||||
| Last Modified: | 03 Sep 2026 12:43 |
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