Atomic insights into how electrolyte concentration controls CO electroreduction to acetate.

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dc.contributor.authorBai, X.
dc.contributor.authorJiang, L.
dc.contributor.authorJiao, Y.
dc.date.issued2025
dc.descriptionPublished online 22 August 2025
dc.description.abstractDuring the electrochemical conversion of CO to acetate on copper-based catalysts, the electrolyte concentration plays a crucial role in acetate selectivity. However, the correlation between the electrolyte concentration and the local microenvironment as well as the reaction kinetics remains unclear. In this work, we report for the first time the impact of KOH concentration on the solvent structure and reaction kinetics for CO reduction to acetate using advanced operando computational methods. With increasing KOH concentration, we find that the interfacial solvent structure becomes dense and the hydrogen bond network becomes more stable which benefits the directional transfer of protons/hydroxides. In terms of reaction kinetics, high-concentration KOH not only promotes the generation of *OH, but also accelerates its combination with surface *CO to form *COOH, a key step in the production of acetate. These insights offer a practical strategy for tuning electrolytes to boost catalyst performance.
dc.description.statementofresponsibilityXiaowan Bai, Lin Jiang, and Yan Jiao
dc.identifier.citationChemical Science, 2025; 16(37):17461-17469
dc.identifier.doi10.1039/d5sc04670j
dc.identifier.issn2041-6520
dc.identifier.issn2041-6539
dc.identifier.orcidBai, X. [0000-0001-7994-9152]
dc.identifier.orcidJiang, L. [0000-0002-4730-4699]
dc.identifier.orcidJiao, Y. [0000-0003-1329-4290]
dc.identifier.urihttps://hdl.handle.net/2440/148074
dc.language.isoen
dc.publisherThe Royal Society of Chemistry
dc.relation.granthttp://purl.org/au-research/grants/arc/CE230100032
dc.relation.granthttp://purl.org/au-research/grants/arc/DE240100846
dc.relation.granthttp://purl.org/au-research/grants/arc/DP250104259
dc.rights© 2025 The Author(s). Published by the Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. All publication charges for this article have been paid for by the Royal Society of Chemistry
dc.source.urihttps://doi.org/10.1039/d5sc04670j
dc.subjectelectrolyte concentration controls CO electroreduction; atomic insights
dc.titleAtomic insights into how electrolyte concentration controls CO electroreduction to acetate.
dc.typeJournal article
pubs.publication-statusPublished

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