Abstract
In this paper, we implement the most rigorous approach to the mathematical description of two-phase transfer processes in liquid water, water vapor, and non-condensable gases (hydrogen and oxygen) in gas-diffusion electrodes/current collectors of water electrolyzers based on a polymer electrolyte membrane. The solution to this problem allowed the following to be determined: various movement modes of gas–liquid flows and their effects on electrolyzer performance; optimal parameters of gas-diffusion electrodes (thickness, porosity, permeability, wetting angle), depending on the required operating mode of the electrolyzer (current density, temperature, pressure); and possible reasons for the incorrect operation of the electrolyzer.
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Funding
This work was supported by the Russian Foundation for Basic Research, project no. 19-58-26022 and the Czech Science Foundation, project no. 20-06422J.
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Translated by A. Ivanov
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Kalinnikov, A.A., Grigor’ev, S.A., Bessarabov, D.G. et al. Study of the Influence of Two-Phase Mass Transfer in Gas-Diffusion Electrodes on the Characteristics of Electrolysis Cells Based on a Polymer Electrolyte Membrane. Nanotechnol Russia 15, 379–387 (2020). https://doi.org/10.1134/S1995078020030052
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DOI: https://doi.org/10.1134/S1995078020030052