Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 10593-10602 |
| Seitenumfang | 10 |
| Fachzeitschrift | Electrochimica acta |
| Jahrgang | 56 |
| Ausgabenummer | 28 |
| Publikationsstatus | Veröffentlicht - 1 Dez. 2011 |
| Extern publiziert | Ja |
Abstract
Abstract: In a PEMFC with Pt anode under CO poisoning, the possibility and conditions for the occurrence of autonomous potential oscillations in galvanostatic operation were investigated. A special experimental setup consisting of a differential H2/H2 cell was used, in order to eliminate the masking effect of the cathode and to avoid spatial distributions along the channel. The influence of CO concentration and temperature on the behaviour of the oscillations was analysed. A model developed for cells with PtRu catalyst was adapted to fit the experimental data. The comparison of the original and adapted parameter set revealed lower water dissociation and CO oxidation constants at Pt.
Schlagwörter
- Bifurcation, Carbon monoxide, Oscillations, Platinum, Polymer electrolyte membrane fuel cell, PEMFC
ASJC Scopus Sachgebiete
- Chemische Verfahrenstechnik (insg.)
- Allgemeine chemische Verfahrenstechnik
- Chemie (insg.)
- Elektrochemie
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in: Electrochimica acta, Jahrgang 56, Nr. 28, 01.12.2011, S. 10593-10602.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Autonomous potential oscillations at the Pt anode of a polymer electrolyte membrane fuel cell under CO poisoning
AU - Kadyk, Thomas
AU - Kirsch, Sebastian
AU - Hanke-Rauschenbach, Richard
AU - Sundmacher, Kai
N1 - Copyright: Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - Abstract: In a PEMFC with Pt anode under CO poisoning, the possibility and conditions for the occurrence of autonomous potential oscillations in galvanostatic operation were investigated. A special experimental setup consisting of a differential H2/H2 cell was used, in order to eliminate the masking effect of the cathode and to avoid spatial distributions along the channel. The influence of CO concentration and temperature on the behaviour of the oscillations was analysed. A model developed for cells with PtRu catalyst was adapted to fit the experimental data. The comparison of the original and adapted parameter set revealed lower water dissociation and CO oxidation constants at Pt.
AB - Abstract: In a PEMFC with Pt anode under CO poisoning, the possibility and conditions for the occurrence of autonomous potential oscillations in galvanostatic operation were investigated. A special experimental setup consisting of a differential H2/H2 cell was used, in order to eliminate the masking effect of the cathode and to avoid spatial distributions along the channel. The influence of CO concentration and temperature on the behaviour of the oscillations was analysed. A model developed for cells with PtRu catalyst was adapted to fit the experimental data. The comparison of the original and adapted parameter set revealed lower water dissociation and CO oxidation constants at Pt.
KW - Bifurcation
KW - Carbon monoxide
KW - Oscillations
KW - Platinum
KW - Polymer electrolyte membrane fuel cell
KW - Bifurcation
KW - Carbon monoxide
KW - Oscillations
KW - Platinum
KW - Polymer electrolyte membrane fuel cell
KW - PEMFC
UR - http://www.scopus.com/inward/record.url?scp=81355161591&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2011.05.005
DO - 10.1016/j.electacta.2011.05.005
M3 - Article
AN - SCOPUS:81355161591
VL - 56
SP - 10593
EP - 10602
JO - Electrochimica acta
JF - Electrochimica acta
SN - 0013-4686
IS - 28
ER -