Thermochemical and Electrochemical Modeling Using MATLAB for Performance Evaluation of Low Temperature Electrolysers

Ibrahim H. Tawil; Zahra  Gebre; Salem  Khamkhem; Abdulnasir Amir; Abdulhamid  Salim Alajmi

doi:10.51646/jsesd.v15i1.863

Authors

Ibrahim H. Tawil The Libyan Center for Solar Energy Research and Studies https://orcid.org/0000-0002-0154-147X
Zahra Gebre Faculty of Science Sabrath University, Libya
Salem Khamkhem Waha Oil Company, Libya https://orcid.org/0009-0003-4453-9024
Abdulnasir Amir Physics Department, Zawia University, Faculty of Natural Resources Engineering in Al-Ajailat, Libya
Abdulhamid Salim Alajmi Faculty of Science Alsabiah Gharyan University, Gharyan, Libya

DOI:

https://doi.org/10.51646/jsesd.v15i1.863

Keywords:

Water electrolysis, low operating temperature, hydrogen production, Electrochemical, temperature

Abstract

This study presents a MATLAB-based computational model for the thermochemical and electrochemical analysis of low-temperature technologies. The model accurately predicts thermodynamic limits and key performance indicators, including reversible cell voltage and hydrogen production, as a function of operating temperature. Findings consistently demonstrate that increasing temperature reduces the reversible cell potential and Gibbs free energy change (ΔG), As a result, it lowers the electrical energy consumption for water splitting and improves the rate of hydrogen production. This analysis has validated that operating the Electrolyser at higher temperatures results in consistently higher performing AEM (50-80C), AWE (60-90C), and PEM (50-100C) systems by lowering cell voltage, boosting the amount of hydrogen produced per minute and enhancing thermodynamic efficiency. It’s worth noting that PEMs provided the greatest yield at 9.52 L/min and AWEs gained the highest efficiency of 61.74%.

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