Analytical study of over‐voltages in alkaline electrolysis and their parametric dependencies through a multi‐physical model

This work is an attempt to develop a model of alkaline electrolysis to compare AEM and conventional electrolysis cells performances over several operating conditions, including a change in electrolytes' composition for hydrogen production. It shows that over-potential behaves differently with whether an AEM/conventional electrolyser is used, or NaOH/KOH electrolyte is used. This model of the electrolytic cell will be a benchmark for developing a further complete representation for alkaline electrolysis which can be used for simulation as well for developing control algorithms-controlled hydrogen production.