Reference electrode measurements in electrolysis cells: an EIS view

Reference electrodes combined with electrochemical impedance spectroscopy can separate overpotentials and degradation processes at individual electrodes. Their placement in solid-electrolyte cells is constrained by geometry and pressurized gases, while noise and perturbations can make impedance measurements difficult to interpret. This webinar introduces reference-electrode arrangements and applications, then examines a proton-exchange-membrane water-electrolysis setup. Experimental results illustrate measurement artifacts and a proposed filtering method for recovering interpretable impedance signals. The presentation is followed by questions and discussion.