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However, achieving high ethanol selectivity and energy efficiency at industrial current densities remains challenging. In this study, we employed a blended anion modulation strategy to enhance the selectivity and energy efficiency of CO\n                    <jats:sub>2<\/jats:sub>\n                    \u2010to\u2010ethanol conversion. The Cu\n                    <jats:sub>2<\/jats:sub>\n                    (OH)\n                    <jats:sub>3<\/jats:sub>\n                    F pre\u2010catalyst achieved Faradaic efficiencies of 50% and 93% for ethanol and C\n                    <jats:sub>2+<\/jats:sub>\n                    , respectively, at 700\u00a0mA cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    in a blended electrolyte consisting of 2\u00a0M KOH and 1\u00a0M KCl. Comprehensive electrochemical tests, combined with in situ characterizations and theoretical analysis, revealed that chloride and hydroxide increased *CO coverage for efficient C\u2500C coupling. Moreover, hydroxide stabilizes the *CHCOH intermediate through hydrogen bonding with the adsorbed hydroxide on the catalyst surface, while Cl synergistically enhances its reactivity by promoting water dissociation toward the ethanol pathway.\n                  <\/jats:p>","DOI":"10.1002\/anie.202506867","type":"journal-article","created":{"date-parts":[[2025,6,29]],"date-time":"2025-06-29T22:05:08Z","timestamp":1751234708000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Selective and Energy Efficient Electrocatalytic CO\n                    <sub>2<\/sub>\n                    \u2010to\u2010Ethanol Conversion through Anion Modulation"],"prefix":"10.1002","volume":"64","author":[{"given":"Yumin","family":"Da","sequence":"first","affiliation":[{"name":"Department of Chemistry National University of Singapore  Singapore 117551 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