Global standards dictating the progressive decarbonisation of society in all sectors include the use of renewable energy sources in industry and transport. This includes green hydrogen. Controlling the growth of hydrogen bubbles in the electrolysis process is crucial as it directly
determines the amount of gas produced. The electrolysis process can be optimised by understanding the influence of process parameters and their interactions. In this work we
investigate the parameters that influence the growth of hydrogen bubbles. We have performed an electrolysis experiment by controlling the most important parameters in the bubble formation and growth process. The interaction of influential parameters such as different types of electrolyte, electrode material and active surface area, and operating voltage on the formation, growth and detachment of hydrogen bubbles was considered. By appropriately tuning the key parameters considered and by agitating the electrolyte, we can reduce the lagging of hydrogen bubbles on the surface and improve their detachment.
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