In-phase current and temperature oscillations reduce PEM fuel cell resistivity: A modeling study

Key Points

• The research aims to analyze how in-phase current and temperature oscillations impact the resistivity of the cathode catalyst layer in PEM fuel cells.
• Developed a non-isothermal analytical model for the impedance of the cathode catalyst layer.
• Analyzed the effect of in-phase harmonic perturbations on current density and temperature.
• Identified optimal amplitudes for perturbations to eliminate proton transport losses.
• Demonstrated that oscillating current and temperature reduce the impedance of the PEM fuel cell.
• Found a reduction in the static polarization resistivity of the cathode catalyst layer.
• Achieved complete elimination of proton transport losses with special perturbation selections.