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However, it remains challenging to assess specific coordination environments for structure\u2013activity relationships and monitor their dynamic structural evolution under catalytic reaction conditions. Herein,\n                    <jats:italic>operando<\/jats:italic>\n                    X\u2010ray absorption fine structure (XAFS) revealed distinct dynamic structural evolution on the low\u2010coordinated Pt site, compared to the conventional PtN\n                    <jats:sub>4<\/jats:sub>\n                    site. Specifically, the low\u2010coordinated Pt site transformed into an asymmetry PtN\n                    <jats:sub>2<\/jats:sub>\n                    Cl\n                    <jats:sub>2<\/jats:sub>\n                    structure upon exposure to a Cl\n                    <jats:sup>\u2212<\/jats:sup>\n                    \u2010containing solution, transiently evolved to PtN\n                    <jats:sub>2<\/jats:sub>\n                    Cl\n                    <jats:sub>4<\/jats:sub>\n                    intermediate at low overpotentials, and reverted to PtN\n                    <jats:sub>2<\/jats:sub>\n                    Cl\n                    <jats:sub>2<\/jats:sub>\n                    after CER. By overcoming the limitation of *Cl intermediate coverage on PtN\n                    <jats:sub>4<\/jats:sub>\n                    SAC, the low\u2010coordinated Pt SAC displayed superior CER performance to commercial RuO\n                    <jats:sub>2<\/jats:sub>\n                    and PtN\n                    <jats:sub>4<\/jats:sub>\n                    benchmarks. This work provides new insights into the rational design of coordination geometry in SACs for electrocatalysis.\n                  <\/jats:p>","DOI":"10.1002\/anie.202513656","type":"journal-article","created":{"date-parts":[[2025,8,26]],"date-time":"2025-08-26T06:45:01Z","timestamp":1756190701000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["<i>Operando<\/i>\n                    XAFS Reveals Dynamic Structural Evolution of Pt Single\u2010Atom Catalysts for Efficient Chlorine Electrosynthesis"],"prefix":"10.1002","volume":"64","author":[{"given":"Qing","family":"Wang","sequence":"first","affiliation":[{"name":"Guangdong Provincial Key Laboratory of Carbon Dioxide Resource Utilization, School of Chemistry South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yun\u2010Bin","family":"Liao","sequence":"additional","affiliation":[{"name":"Guangdong 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