{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T18:48:17Z","timestamp":1791398897952,"version":"4.3.3"},"reference-count":78,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T00:00:00Z","timestamp":1767657600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T00:00:00Z","timestamp":1767657600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"published-print":{"date-parts":[[2026,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The sluggish kinetics and limited durability of the oxygen reduction reaction (ORR) at the cathode remain a major barrier to the widespread deployment of proton exchange membrane fuel cells (PEMFCs). Here, we introduce a low\u2010temperature interfacial engineering strategy to construct ternary L1\n                    <jats:sub>2<\/jats:sub>\n                    \u2010ordered Pt\n                    <jats:sub>3<\/jats:sub>\n                    (Co,Mn)\n                    <jats:sub>1<\/jats:sub>\n                    intermetallic nanoparticles. A conformal MnO shell on Pt\n                    <jats:sub>3<\/jats:sub>\n                    Co\n                    <jats:sub>1<\/jats:sub>\n                    cores not only suppresses particle coalescence but also undergoes redox activation to generate interfacial oxygen vacancies that initiate the disorder\u2010to\u2010order transition. During thermal activation, these vacancies mediate Co\u2013Mn atomic exchange across the core@shell interface, forming interfacial Co\u2013O and intralattice Pt\u2013Mn bonds that cooperatively stabilize the ordered framework. This oxygen\u2010vacancy\u2010driven interfacial evolution reconfigures the Pt electronic structure, downshifting the d\u2010band center, enriching electron density at Pt active sites, and optimizing oxygen\u2010intermediate adsorption. The resulting catalyst exhibits high intrinsic ORR activity and outstanding durability over extended accelerated cycling. When implemented into practical membrane\u2010electrode assemblies, it surpasses the U.S. Department of Energy (DOE) 2025 PEMFC benchmarks for both rated power density and durability, demonstrating its promise for real\u2010world fuel cell applications. More broadly, this work establishes redox\u2010active, confinement\u2010mediated interfacial engineering as a general paradigm for directing atomic ordering and electronic structure in complex multimetallic electrocatalysts.\n                  <\/jats:p>","DOI":"10.1002\/adma.202521036","type":"journal-article","created":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T10:14:03Z","timestamp":1767694443000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Tailoring Interfacial Oxygen Vacancy\u2010Mediated Ordering in Ternary Pt\n                    <sub>3<\/sub>\n                    (Co,Mn)\n                    <sub>1<\/sub>\n                    Intermetallic Nanoparticles for Enhanced Oxygen Reduction Reaction"],"prefix":"10.1002","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7086-7732","authenticated-orcid":false,"given":"Yeji","family":"Park","sequence":"first","affiliation":[{"name":"Department of Chemistry and Center for Multielement Nanoparticle Tectonics Korea University  Seoul Republic of Korea"},{"name":"Hydrogen Fuel Cell Research Center Korea Institute of Science and Technology  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun Ho","family":"Seok","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering Sungkyunkwan University  Suwon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jae\u2010Hyun","family":"Park","sequence":"additional","affiliation":[{"name":"Hydrogen Fuel Cell Research Center Korea Institute of Science and Technology  Seoul Republic of Korea"},{"name":"Division of Energy &amp; Environment Technology, KIST school University of Science and Technology (UST)  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Doyeop","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Center for Multielement Nanoparticle Tectonics Korea University  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seong Chan","family":"Cho","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering Sungkyunkwan University  Suwon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minsu","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Center for Multielement Nanoparticle Tectonics Korea University  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yujin","family":"Jeong","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Center for Multielement Nanoparticle Tectonics Korea University  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