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Perovskite oxides possess dense isolated active sites to convert O\n                    <jats:sub>2<\/jats:sub>\n                    into H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    , yet their intrinsic structural instability is also equally noteworthy. In this work, one kind of silver\u2010based perovskites, AgNbO\n                    <jats:sub>3<\/jats:sub>\n                    , and the structure stabilization approach are proposed for H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    electrosynthesis. The Ag exsolution from the perovskite phase, which triggers the metallic Ag assemblies on surface, is identified as a key origin of electrochemical destabilization for the 2e\n                    <jats:sup>\u2212<\/jats:sup>\n                    ORR process. Simultaneously, the Zr\u2010doping\u2010induced stabilization approach is put forward. The introduction of high\u2010oxyphilic Zr\n                    <jats:sup>4+<\/jats:sup>\n                    leads charge delocalization of oxygen in the [NbO\n                    <jats:sub>6<\/jats:sub>\n                    ] octahedra toward Ag\u2010site region, thereby enhancing Ag\u2013O covalency as evidenced by the increased integrated crystal orbital Hamilton population values and the suppressed exsolution thermodynamics, while the sharply declined phase\u2010transition constant reconfirms that the Zr incorporation retards the Ag\u2010migration kinetics in terms of experimentation. The resulting Zr\u2010doped AgNbO\n                    <jats:sub>3<\/jats:sub>\n                    shows outstanding structural stability maintaining the above 90% Faradaic efficiency even at high\u2010current and long\u2010term operation. This work unveils the origination of perovskite destabilization during the 2e\n                    <jats:sup>\u2212<\/jats:sup>\n                    ORR process, and offers a general strategy for stabilizing isolated active sites in electrochemical application.\n                  <\/jats:p>","DOI":"10.1002\/smll.75963","type":"journal-article","created":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T10:31:21Z","timestamp":1790332281000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Doping Stabilizing Isolated Active Sites in Perovskite Lattice for Stable H\n                    <sub>2<\/sub>\n                    O\n                    <sub>2<\/sub>\n                    Electroproduction"],"prefix":"10.1002","author":[{"given":"Jianqi","family":"Zhang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical Technology  Beijing P. R. China"},{"name":"National Engineering Research Center for Fuel Cell and Hydrogen Source Technology Beijing University of Chemical Technology  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanzong","family":"Huang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical Technology  Beijing P. R. China"},{"name":"National Engineering Research Center for Fuel Cell and Hydrogen Source Technology Beijing University of Chemical Technology  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yajing","family":"Di","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical Technology  Beijing P. R. China"},{"name":"National Engineering Research Center for Fuel Cell and Hydrogen Source Technology Beijing University of Chemical Technology  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guocheng","family":"Hu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical Technology  Beijing P. R. China"},{"name":"National Engineering Research Center for Fuel Cell and Hydrogen Source Technology Beijing University of Chemical Technology  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-5912-3325","authenticated-orcid":false,"given":"Tongtong","family":"Liu","sequence":"additional","affiliation":[{"name":"Beijing Huairou Laboratory  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6113-3072","authenticated-orcid":false,"given":"Zhengping","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical Technology  Beijing P. R. China"},{"name":"National Engineering Research Center for Fuel Cell and Hydrogen Source Technology Beijing University of Chemical Technology  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7901-3693","authenticated-orcid":false,"given":"Feng","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing University of Chemical Technology  Beijing P. R. 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