Two-dimensional dynamic mathematical model of catalytic layer degradation in PEM type fuel cell

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F12%3A43893899" target="_blank" >RIV/60461373:22310/12:43893899 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Two-dimensional dynamic mathematical model of catalytic layer degradation in PEM type fuel cell
Original language description
The goal of this work is to present a mathematical model of the catalytic layer degradation in the PEM type fuel cell. The proposed model is dynamic and two-dimensional. It enables the description of the Pt dissolution and Pt2+ transport in the system atdifferent operational conditions. The model system is represented by a single cell which is considered as multiphase and macro-homogeneous. The considered degradation reactions are: (i) electrochemical dissolution and (ii) electrochemical oxidation of platinum, (iii) chemical oxidation of platinum and (iv) chemical reduction of Pt2+ in the membrane. Ostwald ripening is also taken into account. The system of partial differential equations is solved by finite element method implemented in the COMSOL Multiphysics(R) environment. It was observed that the degradation processes are significantly dependent on the operational conditions so, as the highest degradation rate was observed at voltage cycling mode in the range between 1.2 and 0.8 V.
Czech name
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Czech description
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Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
New trends in application of photo and electro catalysis
ISBN
978-80-7080-809-2
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
107-111
Publisher name
VŠCHT Praha
Place of publication
Praha
Event location
Hnanice, Czech republic
Event date
Dec 5, 2011
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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