期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 164, 期 9, 页码 F911-F915出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0561709jes
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We report a physics-based analytical model for low-current PEM fuel cell impedance, which takes into account oxygen transport in the channel. The model is fast: fitting the model impedance to the experimental Nyquist spectrum takes about 2 minutes on a 2-GHz notebook. In addition to the transport and kinetic parameters of the catalyst layer, fitting returns the oxygen diffusion coefficient in the gas-diffusion layer and the resistivity due to oxygen transport in the channel. Maple worksheet with the fitting procedure is available for download. (C) The Author(s) 2017. Published by ECS.
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