Transient behavior of CO poisoning of the anode catalyst layer of a PEM fuel cell |
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| Affiliation: | 1. Department of Mechanical Engineering, National Chiao Tung University, Hsinchu, Taiwan 300, ROC;2. Department of Mechatronic Engineering, Huafan University, Shih Ting, Taipei, Taiwan 223, ROC;1. European Institute for Energy Research (EIFER), Emmy-Noether-Str 11, 76131, Karlsruhe, Germany;2. Ballard Power Systems Europe A/S, Majsmarken 1, 9500, Hobro, Denmark;1. Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, University of Thessaly, Pedion Areos 38834, Volos, Greece;2. Laboratory of Materials and Devices for Clean Energy, Department of Technology of Electrochemical Processes, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russia;3. Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes, Institute of High Temperature Electrochemistry (RAS), Yekaterinburg, 620990, Russian Federation;4. The Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, School of Chemical Engineering and Technology, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China;5. Collaborative Innovation Center of Sustainable Energy Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, College of Chemistry and Chemical Engineering, School of Physical Science and Technology, Guangxi University, Nanning, 530004, China;1. VTT – Technical Research Centre of Finland, Biologinkuja 3-5, 02044 Espoo, Finland;2. LEPABE – Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;3. Departamento de Química, Escola de Ciências da Vida e do Ambiente, Universidade de Trás-os-Montes e Alto Douro, Apartado 1013, 5001-801 Vila-Real Codex, Portugal |
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| Abstract: | A one-dimensional transient mathematical model is applied to simulate the carbon monoxide poisoning effect on the performance of a PEM fuel cell. Based on the CO kinetic model developed by Springer et al. [T.E. Springer, T. Rockward, T.A. Zawodzinski, S. Gottesfeld, J. Electrochem. Soc. 148 (2001) A11–A23], the transient behaviors of the CO poisoning process across the anode catalyst layer is investigated. The results show that the hydrogen coverage, θH, decreases with the time due to CO adsorption on the catalyst sites. A higher CO concentration results in fewer available catalyst sites for hydrogen electro-oxidation and a significant decrease in the response time to reach steady state, tss. Increasing the anode overpotential and the gas porosity would result in an increase in the current density, especially at low levels of CO concentration. |
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