The Holby-Morgan model of platinum catalyst degradation in PEM fuel cells: range of feasible parameters achieved using voltage cycling Научная публикация
| Журнал |
Technologies
, E-ISSN: 2227-7080 |
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| Вых. Данные | Год: 2023, Том: 11, Номер: 6, Номер статьи : 184, Страниц : DOI: 10.3390/technologies11060184 | ||||
| Ключевые слова | PROTON-EXCHANGE MEMBRANE FUEL CELL, CATALYST DEGRADATION, PLATINUM DISSOLUTION AND OXIDATION, ACCELERATED STRESS TEST, SENSITIVITY ANALYSIS, FEASIBLE REGION OF PARAMETERS | ||||
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Реферат:
Loss of electrochemical surface area in proton-exchange membrane is of large practical importance, since membrane degradation largely affects the durability and life of fuel cells. In this paper, the electrokinetic model developed by Holby and Morgan is considered. The paper describes degradation mechanisms in membrane catalyst presented by platinum dissolution, platinum diffusion, and platinum oxide formation. A one-dimensional model is governed by nonlinear reaction–diffusion equations given in a cathodic catalyst layer using Butler–Volmer relationships for reaction rates. The governing system is endowed with initial conditions, mixed no-flux boundary condition at the interface with gas diffusion layer, and a perfectly absorbing condition at the membrane boundary. In cyclic voltammetry tests, a non-symmetric square waveform is applied for the electric potential difference between 0.6 and 0.9 V held for 10 and 30 s, respectively, according to the protocol of European Fuel Cell and Hydrogen Joint Undertaking. Aimed at mitigation strategies, the impact of cycling operating conditions and model parameters on the loss rate of active area is investigated. The global behavior with respect to variation of parameters is performed using the method of sensitivity analysis. Finding feasible and unfeasible values helps to determine the range of test parameters employed in the model. Comprehensive results of numerical simulation tests are presented and discussed.
Библиографическая ссылка:
Kovtunenko V.A.
The Holby-Morgan model of platinum catalyst degradation in PEM fuel cells: range of feasible parameters achieved using voltage cycling
Technologies. 2023. V.11. N6. 184 . DOI: 10.3390/technologies11060184 WOS Scopus РИНЦ OpenAlex
The Holby-Morgan model of platinum catalyst degradation in PEM fuel cells: range of feasible parameters achieved using voltage cycling
Technologies. 2023. V.11. N6. 184 . DOI: 10.3390/technologies11060184 WOS Scopus РИНЦ OpenAlex
Даты:
| Поступила в редакцию: | 28 сент. 2023 г. |
| Принята к публикации: | 11 дек. 2023 г. |
| Опубликована в печати: | 18 дек. 2023 г. |
Идентификаторы БД:
| Web of science: | WOS:001131255500001 |
| Scopus: | 2-s2.0-85180727250 |
| РИНЦ: | 60780236 |
| OpenAlex: | W4389918694 |