biostudies-literatureChen WShenzhen Science and Technology Innovation ProgramChina Postdoctoral Science FoundationShenzhen Science and Technology Innovation CommitteeGuangdong Basic and Applied Basic Research FoundationBasic and Applied Basic Research Foundation of Guangdong ProvinceNational Natural Science Foundation of ChinaGuangdong Basic and Applied Basic Research FoundationShenzhen Science and Technology Programe19429https://www.ebi.ac.uk/biostudies/studies/S-EPMC12921340biostudies-literatureUnknown38(11)Single-atom alloys (SAAs) emerge as an intriguing model system for electrocatalysis by combining the advantages of single-atom catalysts and nanoalloys, yet it faces the challenge in engineering their surface structure at the atomic level. Herein, to fully utilize active Pt sites to boost ethanol oxidation electrocatalysis, single-Pt-atoms anchored onto the surface of intermetallic Pd₅Bi₃ core-ultrathin Pd shell octahedrons, namely a tensile-strained PdPt₁ SAA skin, were rationally designed and engineered. This unique PdPt₁ SAA skin achieves a record-high mass activity (553.58 A mg_Pt ^-1 or 34.73 A mg_Pt+Pd ^-1) and outstanding durability toward ethanol oxidation in alkaline electrolyte, outperforming the Advanced materials (Deerfield Beach, Fla.)Maximize the Electrocatalytic Activity of Pt Toward Ethanol Oxidation via Engineering PdPt<sub>1</sub> Single-Atom Alloy Skin.PMC12921340224751322025M770934ZDSYS20220527171401003GZC20241087JCYJ202103241050080222025A1515011964KQTD2019092917391496752101259Qiu JLi YYang ZFu XZLi TChen WLuo JLXie LLiu SQLuo SCai XYuan ZfalseMaximize the Electrocatalytic Activity of Pt Toward Ethanol Oxidation via Engineering PdPt<sub>1</sub> Single-Atom Alloy Skin.Single-atom alloys (SAAs) emerge as an intriguing model system for electrocatalysis by combining the advantages of single-atom catalysts and nanoalloys, yet it faces the challenge in engineering their surface structure at the atomic level. Herein, to fully utilize active Pt sites to boost ethanol oxidation electrocatalysis, single-Pt-atoms anchored onto the surface of intermetallic Pd₅Bi₃ core-ultrathin Pd shell octahedrons, namely a tensile-strained PdPt₁ SAA skin, were rationally designed and engineered. This unique PdPt₁ SAA skin achieves a record-high mass activity (553.58 A mg_Pt ^-1 or 34.73 A mg_Pt+Pd ^-1) and outstanding durability toward ethanol oxidation in alkaline electrolyte, outperforming the 2026-01-01T00:00:00Z2026 Feb2026-07-16T13:05:18.928Z2026-07-09T10:56:30.99ZS-EPMC129213404148685110.1002/adma.202519429