A Fast Low-Current Model for Impedance of a PEM Fuel Cell Cathode at Low Air Stoichiometry | Zendy

Andrei Kulikovsky | Zendy

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A Fast Low-Current Model for Impedance of a PEM Fuel Cell Cathode at Low Air Stoichiometry

Author(s) -

Andrei Kulikovsky

Publication year - 2017

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.0561709jes

Subject(s) - proton exchange membrane fuel cell , diffusion , oxygen transport , electrical impedance , cathode , analytical chemistry (journal) , stoichiometry , materials science , chemistry , oxygen , mechanics , fuel cells , thermodynamics , electrical engineering , physics , chemical engineering , engineering , chromatography , organic chemistry

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

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