Mathematical Modeling and Simulation of an Alkaline Electrolyzer for Hydrogen Production

Andrianaivoarivelo Jaolalaina Arisoa, Andrianjatovo Falinirina, Rafanjanirina Eulalie Odilette, Randriamanantany Zely Arivelo

Green hydrogen, Alkaline electrolysis, Water electrolysis, Mathematical modeling, MATLAB/Simulink simulation, Electrolyzer performance, Ohmic loss and activation overpotential, Hydrogen production.

In the context of energy transition and the growing interest in green hydrogen as a sustainable fuel, this study presents a comprehensive mathematical modeling of an alkaline water electrolyzer. The paper investigates the fundamental physical and electrochemical processes involved in hydrogen generation, covering electric, thermodynamic, and electrochemical models. Key parameters such as electrolyte concentration, conductivity, membrane resistance, and gas bubble effects are incorporated. Simulation results using MATLAB/Simulink are provided to illustrate the behavior of the system under varying operational conditions. The findings contribute to the optimization of hydrogen production systems through accurate model-based design.

Received: 09 Apr 2025, Receive in revised form: 07 May 2025, Accepted: 13 May 2025, Available online: 20 May 2025

10.22161/ijaers.125.4