Unintended cation crossover influences CO2 reduction selectivity in Cu-based zero-gap electrolysers

• Published in: Nature communications Vol. 14; no. 1; p. 2062
• Main Authors: El-Nagar, Gumaa A., Haun, Flora, Gupta, Siddharth, Stojkovikj, Sasho, Mayer, Matthew T.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 12.04.2023; Nature Publishing Group; Nature Portfolio
• Subjects: 140/146; 147/135; 639/301/299/886; 639/638/161/886; 639/638/77; Alkali metals; Anion exchange; Anion exchanging; Anolytes; Assemblies; Carbon dioxide; Carbon monoxide; Catalysts; Catholytes; Cations; Copper; Electrodes; Electrolysis; Electrolytic cells; Humanities and Social Sciences; Ionic strength; Ions; Membranes; Metal ions; multidisciplinary; Photoelectron spectroscopy; Photoelectrons; Precipitates; Science; Science (multidisciplinary); Speciation; X ray absorption

Membrane electrode assemblies enable CO 2 electrolysis at industrially relevant rates, yet their operational stability is often limited by formation of solid precipitates in the cathode pores, triggered by cation crossover from the anolyte due to imperfect ion exclusion by anion exchange membranes....