Szczegóły publikacji
Opis bibliograficzny
Electrodeposited Ni–C amorphous alloys: a novel approach to enhancing catalytic activity for hydrogen evolution and urea electrooxidation / Dawid KUTYŁA // International Journal of Hydrogen Energy ; ISSN 0360-3199. — 2025 — vol. 129, s. 184–192. — Bibliogr. s. 191–192, Abstr. — Publikacja dostępna online od: 2025-04-24
Autor
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 159681 |
|---|---|
| Data dodania do BaDAP | 2025-06-11 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ijhydene.2025.04.290 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | International Journal of Hydrogen Energy |
Abstract
This study presents the electrodeposition of nickel–carbon (Ni–C) amorphous alloys using arginine as a carbon precursor in a modified Watts bath. Increasing carbon content leads to structural amorphization, reduced crystallite size (down to 8 nm), and enhanced electrochemically active surface area (ECSA). Electrochemical tests reveal improved catalytic performance for both hydrogen evolution (HER) and urea electrooxidation. The overpotential at −10 mA/cm2 for HER is significantly reduced (−0.243 V vs. RHE), and Ni–C electrodes exhibit 10-time higher current densities for urea oxidation at +1.55 V in 1 M NaOH +0.33 M urea compared to pure nickel. The presence of carbon promotes the formation of the Ni(OH)2/NiOOH redox couple by increasing the electrochemically active surface area and enhancing oxidation efficiency. These results highlight Ni–C alloys as promising electrode materials for energy conversion and waste valorization applications.
