Pore network modeling of cathode catalyst layer of proton exchange membrane fuel cell |
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Authors: | Rui Wu Qiang Liao Xun Zhu Hong Wang |
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Affiliation: | 1. Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, 400030, China;2. Institute of Engineering Thermophysics, Chongqing University, Chongqing 400044, China |
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Abstract: | In this paper, a pore network model is developed to investigate the coupled transport and reaction processes in the cathode catalyst layer (CCL) of proton exchange membrane fuel cell (PEMFC). The developed model is validated by comparing the predicted polarization curve with the experimental data, and the parametric studies are carried out to elucidate the effects of CCL design parameters. With the decrease of the CCL thickness and the Nafion content, the cell voltage reduces at the low current density but increases when the current density is higher. The cell performance is also improved by increasing the proton conductivity of the Nafion film in the CCL. As compared to the CCL of uniformly distributed Nafion, the CCL with the Nafion volume decreasing along the thickness direction exhibits better performance at the high current density. |
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Keywords: | Pore network model Cathode catalyst layer Proton exchange membrane fuel cell |
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