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000910616 1001_ $$0P:(DE-Juel1)129878$$aKulikovsky, Andrei$$b0$$eCorresponding author
000910616 245__ $$aAnalytical Impedance of PEM Fuel Cell Cathode Including Oxygen Transport in the Channel, Gas Diffusion, and Catalyst Layers
000910616 260__ $$aBristol$$bIOP Publishing$$c2022
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000910616 520__ $$aA model for impedance of a PEM fuel cell cathode taking into account oxygen transport in the cathode catalyst layer (CCL), gas–diffusion layer (GDL) and in channel is solved analytically. A formula for the cathode impedance is valid for the cell current densities below 100 mA cm−2 and air flow stoichiometries exceeding 10. Least–squares fitting of experimental spectrum using the analytical result takes about 5 s on a standard PC. Fitting returns Tafel slope of the oxygen reduction reaction, double layer capacitance, CCL proton conductivity and oxygen diffusivities of the CCL and GDL. Analytical impedance can be coded as a user–defined function for a standard spectra fitting software supplied with EIS–meters.
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000910616 773__ $$0PERI:(DE-600)2002179-3$$a10.1149/1945-7111/ac5d97$$gVol. 169, no. 3, p. 034527 -$$n3$$p034527 -$$tJournal of the Electrochemical Society$$v169$$x0013-4651$$y2022
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000910616 9141_ $$y2022
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