Prikaz osnovnih podataka o dokumentu
Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction
dc.creator | Kutyła, Dawid | |
dc.creator | Krstajić Pajić, Mila N. | |
dc.creator | Lačnjevac, Uroš Č. | |
dc.creator | Marzec, Mateusz M. | |
dc.creator | Elezović, Nevenka R. | |
dc.creator | Żabiński, Piotr | |
dc.date.accessioned | 2023-12-18T10:56:49Z | |
dc.date.available | 2023-12-18T10:56:49Z | |
dc.date.issued | 2024 | |
dc.identifier.issn | 0360-3199 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6992 | |
dc.description.abstract | This study investigates the structure, electrochemical behavior and hydrogen evolution reaction (HER) performance of electrodeposited Ru–Co alloy coatings. The alloys were prepared from a 0.75 M Co2+ + 0.025 M Ru3+ solution at various potentials ranging from −0.5 to −1.2 V vs. SCE. Results reveal that the Ru and Co deposition processes are interdependent. The deposition of nobler Ru from the mixed metal solution reaches pure diffusion control already at −0.7 V compared to −1.0 V from a single Ru bath. On the other hand, Co deposition is significantly facilitated in the presence of Ru in the solution. Consequently, as the deposition potential changes from −0.6 to −1.0 V, Ru–Co solid solution coatings characterized by a distinct globular morphology are formed, with their Co content increasing from 22.1/7.4 to 70.2/86.1 wt% for the Cu/Ti2AlC MAX phase substrate applied. The alloy catalysts are found to show much better HER activity and stability in alkaline than in acidic solutions. The best Ru–Co@Ti2AlC sample, electrodeposited at −0.6 V, requires an overpotential of only −95 mV to deliver a current density of −100 mA cm−2 in 1 M KOH, thus outperforming most Ru–Co-based HER electrocatalysts reported to date. | |
dc.publisher | Elsevier Ltd. | en |
dc.relation | “Excellence initiative – research university” for the University of Science and Technology in Krakow, grant No.1963 | |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200053/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200135/RS// | |
dc.relation | info:eu-repo/grantAgreement/ScienceFundRS/Promis/6062244/RS// | |
dc.rights | restrictedAccess | |
dc.source | International Journal of Hydrogen Energy | en |
dc.subject | Alkaline water electrolysis | |
dc.subject | Cyclic voltammetry | |
dc.subject | Electrochemical impedance spectroscopy | |
dc.subject | Electrodeposition | |
dc.subject | Solid solution | |
dc.subject | Ti2AlC | |
dc.title | Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction | en |
dc.type | article | en |
dc.rights.license | ARR | en |
dc.citation.epage | 40 | |
dc.citation.spage | 28 | |
dc.citation.volume | 56 | |
dc.identifier.doi | 10.1016/j.ijhydene.2023.11.296 | |
dc.identifier.scopus | 2-s2.0-85179111020 | |
dc.type.version | publishedVersion |