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• W4220687568 endingPage "107577" @default.
• W4220687568 startingPage "107577" @default.
• W4220687568 abstract "The ongoing need to develop and enhance current energy sources to replace fossil fuels emphasizes the necessity of a thorough understanding of clean energy production methods such as hydrogen production via water electrolysis. This work provides a versatile CFD (Computational Fluid Dynamics) simulation that describes an alkaline water electrolyzer, which considers the electrolyte’s performance, electrode materials, separator membrane, and the impact of generated bubbles in the electrolysis considering anodic and cathodic reactions at the same time. The bubble presence affects the applied cell potential and the local current distribution, and it is directly related to the efficiency of the process. For a multivariate view, a 2 3 factorial design was carried out, in which electrode material, applied current density, and the presence or absence of gas bubbles were simultaneously investigated. As a result, the contribution of each factor to the cell potential was calculated, their link to the applied current, and the cross-effects. Finally, we observed an important non-uniformity in the local current distribution and an increase in the spent energy due to the produced gases at current densities higher than 100 mA cm −2 . • Finite element method is suitable to evaluate both bubble-induced convection and electrochemical behavior of electrolyzers. • The presence of bubbles have impact on the cell potential. • The gas accumulation in the domain reduces the electrolyte conductivity. • The electrode activity depends on the gas covering." @default.
• W4220687568 created "2022-04-03" @default.
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• W4220687568 date "2022-06-01" @default.
• W4220687568 modified "2023-09-26" @default.
• W4220687568 title "Investigation of the influence of the void fraction on the energy consumption of a vertical electrolyser under natural convection" @default.
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• W4220687568 doi "https://doi.org/10.1016/j.jece.2022.107577" @default.
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