Szczegóły publikacji
Opis bibliograficzny
Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction / Dawid KUTYŁA, Mila N. Krstajić Pajić, Uroš Č. Lačnjevac, Mateusz M. MARZEC, Nevenka R. Elezović, Piotr ŻABIŃSKI // International Journal of Hydrogen Energy ; ISSN 0360-3199. — 2024 — vol. 56, s. 28-40. — Bibliogr. s. 39-40, Abstr. — Publikacja dostępna online od: 2023-12-06
Autorzy (6)
- AGHKutyła Dawid
- Krstajić-Pajić Mila
- Lačnjevac Uroš Č.
- AGHMarzec Mateusz M.
- Elezović Nevenka R.
- AGHŻabiński Piotr
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 151180 |
|---|---|
| Data dodania do BaDAP | 2024-02-19 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ijhydene.2023.11.296 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | International Journal of Hydrogen Energy |
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.