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In this study, we proposed a novel electrothermal tandem strategy to efficiently synthesize CH\n                    <jats:sub>3<\/jats:sub>\n                    CHO from CO\n                    <jats:sub>2<\/jats:sub>\n                    and water under mild conditions, by integrating aqueous CO\n                    <jats:sub>2<\/jats:sub>\n                    electrolysis and Fe\n                    <jats:sup>3+<\/jats:sup>\n                    \u2010promoted Pd\n                    <jats:sup>2+<\/jats:sup>\n                    \u2010catalyzed Wacker oxidation. Specifically, CO\n                    <jats:sub>2<\/jats:sub>\n                    is electrochemically reduced to C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>4<\/jats:sub>\n                    over Ga\u2010doped Cu\/Cu\n                    <jats:sub>2<\/jats:sub>\n                    O hybrid and water is oxidized to O\n                    <jats:sub>2<\/jats:sub>\n                    over reconstructed Ni\n                    <jats:sub>5<\/jats:sub>\n                    P\n                    <jats:sub>4<\/jats:sub>\n                    array simultaneously, with respective Faradaic efficiencies of 63.9% and 100%. Then, the generated C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>4<\/jats:sub>\n                    and O\n                    <jats:sub>2<\/jats:sub>\n                    react with each other in a separate chemical reactor to produce CH\n                    <jats:sub>3<\/jats:sub>\n                    CHO with high production rate of 253.9\u00a0\u00b5mol h\n                    <jats:sup>\u22121<\/jats:sup>\n                    and superior selectivity of 98.3%. Systematic experiments and\n                    <jats:italic>operando<\/jats:italic>\n                    Raman and infrared spectroscopy characterizations verify that the electron\u2010deficient Ga\n                    <jats:sup>3+<\/jats:sup>\n                    induces electron transfer to stabilize Cu\n                    <jats:sup>+<\/jats:sup>\n                    species for promoted adsorption and coupling of key *CO intermediates for C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>4<\/jats:sub>\n                    generation, and the Fe\n                    <jats:sup>3+<\/jats:sup>\n                    cocatalyst with higher oxidative property relative to traditional Cu\n                    <jats:sup>2+<\/jats:sup>\n                    more effectively alleviates Pd\n                    <jats:sup>2+<\/jats:sup>\n                    poison caused by CO impurity. This work exhibits tremendous potential for CH\n                    <jats:sub>3<\/jats:sub>\n                    CHO synthesis from CO\n                    <jats:sub>2<\/jats:sub>\n                    with both economic and environmental benefits.\n                  <\/jats:p>","DOI":"10.1002\/anie.8641524","type":"journal-article","created":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T10:26:31Z","timestamp":1788776791000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Electrothermal Tandem Catalysis for Acetaldehyde Synthesis From CO\n                    <sub>2<\/sub>\n                    and Water"],"prefix":"10.1002","author":[{"given":"Hui","family":"Jiang","sequence":"first","affiliation":[{"name":"State Key Laboratory of New Textile Materials and Advanced Processing Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Huazhong University of Science and Technology (HUST)  Wuhan P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Zhu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of New Textile Materials and Advanced Processing Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Huazhong University of Science and Technology (HUST)  Wuhan P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2054-908X","authenticated-orcid":false,"given":"Bao Yu","family":"Xia","sequence":"additional","affiliation":[{"name":"State Key Laboratory of New Textile Materials and Advanced Processing Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Huazhong University of Science and Technology (HUST)  Wuhan P.R. China"},{"name":"Center For Next\u2010Generation Energy Materials and School of Chemical Engineering Sungkyunkwan University (SKKU)  Suwon Gyeonggi\u2010do Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1849-0418","authenticated-orcid":false,"given":"Bo","family":"You","sequence":"additional","affiliation":[{"name":"State Key Laboratory of New Textile Materials and Advanced Processing Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Huazhong University of Science and Technology (HUST)  Wuhan P.R. 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