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Cathode catalyst layers modified with Brønsted acid oxides to improve proton exchange membrane electrolysers for impure water splitting
Nature Energy, Published online: 09 June 2025; doi:10.1038/s41560-025-01787-9Ultrapure water is usually used as a feedstock for proton exchange membrane (PEM) electrolysers because trace contaminants can cause failure. Here the authors show that PEM electrolysers can run on impure tap water when Brønsted acid oxides are used at the cathode to create a strongly acidic microenvironment.
Nature Energy, Published online: 09 June 2025; doi:10.1038/s41560-025-01787-9Ultrapure water is usually used as a feedstock for proton exchange membrane (PEM) electrolysers because trace contaminants can cause failure. Here the authors show that PEM electrolysers can run on impure tap water when Brønsted acid oxides are used at the cathode to create a strongly acidic microenvironment.
