Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | B1521-B1528 |
| Fachzeitschrift | Journal of the Electrochemical Society |
| Jahrgang | 2010 |
| Ausgabenummer | 157 |
| Publikationsstatus | Veröffentlicht - 2010 |
| Extern publiziert | Ja |
Abstract
In this work, the behavior of a polymer electrolyte membrane (PEM) fuel cell with a Pt/Ru anode exposed to H2/CO mixtures is investigated. A compact, isothermal one-dimensional model is derived to address the phenomena occurring at the along-the-channel direction. Besides material balances for the anode channel and electrode, the model considers charge balances for the membrane (Laplace equation) and both the anodic and cathodic double layers. The model predicts the formation of complex spatiotemporal patterns for a wide range of technical relevant operating conditions. The system can be understood as a chain of coupled oscillators. The electrical coupling is influenced by the electrolyte conductivity. Furthermore, the system features coupling by the anode gas channel dynamics. Depending on the ratio of the characteristic time for CO transport in the gas channel and the characteristic time required for CO adsorption, two limiting cases with varying degrees of complexity exist. The qualitative theoretical results of the present contribution give a guideline for the design of a validating experiment and pave the way for a systematic experimental analysis.
Schlagwörter
- Adsorption, Electrolytes, Fuel cells, Oscillators (electronic), PEM fuel cell, Anode gas
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Energie (insg.)
- Erneuerbare Energien, Nachhaltigkeit und Umwelt
- Werkstoffwissenschaften (insg.)
- Oberflächen, Beschichtungen und Folien
- Chemie (insg.)
- Elektrochemie
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
Ziele für nachhaltige Entwicklung
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in: Journal of the Electrochemical Society, Jahrgang 2010, Nr. 157, 2010, S. B1521-B1528.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Oscillations and pattern formation in a PEM fuel cell with Pt/Ru anode exposed to H2/CO mixtures
AU - Hanke-Rauschenbach, Richard
AU - Kirsch, Sebastian
AU - Kelling, Reń
AU - Weinzierl, Christine
AU - Sundmacher, Kai
N1 - Copyright: Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - In this work, the behavior of a polymer electrolyte membrane (PEM) fuel cell with a Pt/Ru anode exposed to H2/CO mixtures is investigated. A compact, isothermal one-dimensional model is derived to address the phenomena occurring at the along-the-channel direction. Besides material balances for the anode channel and electrode, the model considers charge balances for the membrane (Laplace equation) and both the anodic and cathodic double layers. The model predicts the formation of complex spatiotemporal patterns for a wide range of technical relevant operating conditions. The system can be understood as a chain of coupled oscillators. The electrical coupling is influenced by the electrolyte conductivity. Furthermore, the system features coupling by the anode gas channel dynamics. Depending on the ratio of the characteristic time for CO transport in the gas channel and the characteristic time required for CO adsorption, two limiting cases with varying degrees of complexity exist. The qualitative theoretical results of the present contribution give a guideline for the design of a validating experiment and pave the way for a systematic experimental analysis.
AB - In this work, the behavior of a polymer electrolyte membrane (PEM) fuel cell with a Pt/Ru anode exposed to H2/CO mixtures is investigated. A compact, isothermal one-dimensional model is derived to address the phenomena occurring at the along-the-channel direction. Besides material balances for the anode channel and electrode, the model considers charge balances for the membrane (Laplace equation) and both the anodic and cathodic double layers. The model predicts the formation of complex spatiotemporal patterns for a wide range of technical relevant operating conditions. The system can be understood as a chain of coupled oscillators. The electrical coupling is influenced by the electrolyte conductivity. Furthermore, the system features coupling by the anode gas channel dynamics. Depending on the ratio of the characteristic time for CO transport in the gas channel and the characteristic time required for CO adsorption, two limiting cases with varying degrees of complexity exist. The qualitative theoretical results of the present contribution give a guideline for the design of a validating experiment and pave the way for a systematic experimental analysis.
KW - Adsorption
KW - Electrolytes
KW - Fuel cells
KW - Oscillators (electronic)
KW - PEM fuel cell
KW - Anode gas
UR - http://www.scopus.com/inward/record.url?scp=77957691947&partnerID=8YFLogxK
U2 - 10.1149/1.3469570
DO - 10.1149/1.3469570
M3 - Article
AN - SCOPUS:77957691947
VL - 2010
SP - B1521-B1528
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 157
ER -