Effect of temperature on the performance of Proton Exchange Membrane water electrolysis

A key component of sustainable hydrogen production is proton exchange membrane (PEM) water electrolysis, which has great efficiency and scalability. Using Computational Fluid Dynamics (CFD), this study methodically examines the effects of operational temperature on PEM electrolysis system performance and hydrogen generation rates. To replicate the interaction of mass movement, temperature effects, and electrochemical reactions inside the electrolyzer, a thorough 3D CFD model was created. To assess important performance measures such as current density distribution, energy efficiency, and hydrogen generation, simulations were run at four different temperatures from 313k to 353k. The results show that by speeding up electrochemical kinetics and lowering resistive losses, raising the operating temperature greatly improves hydrogen production. However, the study also points out several possible difficulties that can affect long-term operation, such as complicated water management and material stability at high temperatures. These results highlight how crucial temperature optimization is to raising PEM water electrolysis's sustainability and efficiency. In line with international decarbonization objectives, this research advances the development of more reliable and effective hydrogen generation systems by offering a deeper understanding of thermal impacts.