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Hydrogen evolution in alkaline medium on intratube and surface decorated PtRu catalyst

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Ali, Farhan S. M.
dc.contributor.author Arevalo, Ryan Lacdao
dc.contributor.author Vandichel, Matthias
dc.contributor.author Speck, Florian
dc.contributor.author Rautama, Eeva-Leena
dc.contributor.author Jiang, Hua
dc.contributor.author Sorsa, Olli
dc.contributor.author Mustonen, Kimmo
dc.contributor.author Cherevko, Serhiy
dc.contributor.author Kallio, Tanja
dc.date.accessioned 2022-06-22T09:02:19Z
dc.date.available 2022-06-22T09:02:19Z
dc.date.issued 2022-10-15
dc.identifier.citation Ali , F S M , Arevalo , R L , Vandichel , M , Speck , F , Rautama , E-L , Jiang , H , Sorsa , O , Mustonen , K , Cherevko , S & Kallio , T 2022 , ' Hydrogen evolution in alkaline medium on intratube and surface decorated PtRu catalyst ' , Applied Catalysis B: Environmental , vol. 315 , 121541 . https://doi.org/10.1016/j.apcatb.2022.121541 en
dc.identifier.issn 0926-3373
dc.identifier.issn 1873-3883
dc.identifier.other PURE UUID: 9a4a599e-dd3d-4a44-a2d2-6ddd93d4e124
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/9a4a599e-dd3d-4a44-a2d2-6ddd93d4e124
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/84614333/CHEM_Ali_et_al_Hydrogen_evolution_in_alkaline_medium_2022_Applied_Catalysis_B.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/115330
dc.description | openaire: EC/H2020/721065/EU//CREATE
dc.description.abstract For anion exchange membrane (AEM) electrolysis, challenges include finding an optimal catalyst for hydrogen evolution reaction (HER), as the noble metals are scarce while non-noble metals are inferior. Here, the noble metal amount is reduced in a straightforward solution synthesis which produces Pt-Ru surface nanoparticles and unique intratube nanowires decorated on single walled carbon nanotubes (SWNT). In half-cell tests, 5 wtPtRu-% Pt-Ru SWNT demonstrates stable 10 mA cm−2 HER current at 46 mV overpotential and outperforms commercial electrocatalysts. When integrated in an AEM electrolyser, a high current density of 500 mA cm−2 at a low voltage of 1.72 V is achieved with 34 µg cm−2 metal loading. First-principles calculations reveal that both the Pt-Ru alloy nanoparticle and intratube nanowires promote near optimal H* binding energy, thereby releasing the H2 faster. Thus, our approach yields an active low metal loading alkaline HER catalyst without sacrificing the performance in an AEM electrolyser. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier BV
dc.relation info:eu-repo/grantAgreement/EC/H2020/721065/EU//CREATE
dc.relation.ispartofseries Applied Catalysis B: Environmental en
dc.relation.ispartofseries Volume 315 en
dc.rights openAccess en
dc.title Hydrogen evolution in alkaline medium on intratube and surface decorated PtRu catalyst en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Electrochemical Energy Conversion
dc.contributor.department University of Limerick
dc.contributor.department Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy
dc.contributor.department Department of Chemistry and Materials Science
dc.contributor.department OtaNano
dc.contributor.department University of Vienna
dc.contributor.department Department of Chemistry and Materials Science en
dc.contributor.department Department of Applied Physics en
dc.identifier.urn URN:NBN:fi:aalto-202206224170
dc.identifier.doi 10.1016/j.apcatb.2022.121541
dc.type.version publishedVersion

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