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Copper\u2010based bimetallic electrocatalysts are potential candidates for the CO<jats:sub>2<\/jats:sub>\u2010to\u2010ethanol conversion, but the secondary metal has mainly been focused on active components (such as Ag, Sn) for CO<jats:sub>2<\/jats:sub> electroreduction, which also promote selectivity of ethylene or other reduction products rather than ethanol. Limited attention has been given to alkali\u2010earth metals due to their inherently active chemical property. Herein, we rationally synthesized a (111) facet\u2010oriented nano Cu<jats:sub>2<\/jats:sub>Mg (designated as Cu<jats:sub>2<\/jats:sub>Mg(111)) intermetallic compound with high\u2010density ordered Cu<jats:sub>3<\/jats:sub>\u2010Mg sites. The in situ Raman spectroscopy and density function theory calculations revealed that the Cu<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup>\n<jats:sup>\u2212<\/jats:sup>\u2010Mg<jats:sup>\u2212<\/jats:sup>\n<jats:sup>+<\/jats:sup> active sites allowed to increase *CO surface coverage, decrease reaction energy for *CO\u2212CO coupling, and stabilize *CHCHOH intermediates, thus promoting the ethanol formation pathway. The Cu<jats:sub>2<\/jats:sub>Mg(111) catalyst exhibited a high FE<jats:sub>C2H5OH<\/jats:sub> of 76.2\u00b14.8\u2009% at 600\u2005mA\u22c5cm<jats:sup>\u22122<\/jats:sup>, and a peak value of |<jats:italic>j<\/jats:italic><jats:sub>C2H5OH<\/jats:sub>| of 720\u00b134\u2005mA\u22c5cm<jats:sup>\u22122<\/jats:sup>, almost 4 times of that using conventional Cu<jats:sub>2<\/jats:sub>Mg with (311) facets, comparable to the best reported values for the CO<jats:sub>2<\/jats:sub>\u2010to\u2010ethanol electroreduction.<\/jats:p>","DOI":"10.1002\/anie.202316907","type":"journal-article","created":{"date-parts":[[2024,3,4]],"date-time":"2024-03-04T14:33:26Z","timestamp":1709562806000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":93,"title":["(111) Facet\u2010oriented Cu<sub>2<\/sub>Mg Intermetallic Compound with Cu<sub>3<\/sub>\u2010Mg Sites for CO<sub>2<\/sub> Electroreduction to Ethanol with Industrial Current Density"],"prefix":"10.1002","volume":"63","author":[{"given":"Chen","family":"Peng","sequence":"first","affiliation":[{"name":"Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University  Shanghai 200438 China"},{"name":"School of Chemical Engineering The University of Adelaide  Adelaide SA 5005 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaxing","family":"Ma","sequence":"additional","affiliation":[{"name":"Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gan","family":"Luo","sequence":"additional","affiliation":[{"name":"Henan Engineering Center of New Energy Battery Materials Henan D&amp;A Engineering Center of Advanced Battery Materials College of Chemistry and Chemical Engineering Shangqiu Normal University  Shangqiu 476000 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Yan","sequence":"additional","affiliation":[{"name":"Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junbo","family":"Zhang","sequence":"additional","affiliation":[{"name":"Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yangshen","family":"Chen","sequence":"additional","affiliation":[{"name":"Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Chen","sequence":"additional","affiliation":[{"name":"Canadian Light Source Inc. University of Saskatchewan  Saskatoon SK S7\u2005N 2\u2005V3 Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiqiang","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Western Ontario  London ON N6\u2005A 5B7 Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Wei","sequence":"additional","affiliation":[{"name":"Henan Engineering Center of New Energy Battery Materials Henan D&amp;A Engineering Center of Advanced Battery Materials College of Chemistry and Chemical Engineering Shangqiu Normal University  Shangqiu 476000 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tsun\u2010Kong","family":"Sham","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Western Ontario  London ON N6\u2005A 5B7 Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yao","family":"Zheng","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering The University of Adelaide  Adelaide SA 5005 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min","family":"Kuang","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University  Shanghai 201620 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1803-6955","authenticated-orcid":false,"given":"Gengfeng","family":"Zheng","sequence":"additional","affiliation":[{"name":"Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,3,18]]},"reference":[{"key":"e_1_2_7_1_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.aay4217"},{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929-020-0450-0"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature19060"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202212640"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.asems.2022.100023"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41560-021-00973-9"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsenergylett.0c02610"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202107450"},{"key":"e_1_2_7_9_1","volume":"89","author":"Hori Y.","year":"2008","journal-title":"Mod. 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