Szczegóły publikacji
Opis bibliograficzny
Electrochemical urea oxidation on porous Ni and Ni–M (M = Ir, Pt) electrodes obtained via molten-salt treatment technique / Dawid KUTYŁA, Michihisa Fukumoto, Hiroki Takahashi, Ryuu Takahashi, Katarzyna SKIBIŃSKA, Piotr ŻABIŃSKI // Materials [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1996-1944 . — 2025 — vol. 18 iss. 22 art. no. 5069, s. 1–11. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 10–11, Abstr. — Publikacja dostępna online od: 2025-11-07
Autorzy (6)
- AGHKutyła Dawid
- Fukumoto Michihisa
- Takahashi Hiroki
- Takahashi Ryuu
- AGHSkibińska Katarzyna
- AGHŻabiński Piotr
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 164410 |
|---|---|
| Data dodania do BaDAP | 2025-12-04 |
| Tekst źródłowy | URL |
| DOI | 10.3390/ma18225069 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Materials |
Abstract
Porous Ni, Ni–Ir, and Ni–Pt electrodes were prepared on Ni substrates by molten-salt Al co-deposition followed by dealloying. SEM/EDS and XRD confirmed a Raney-type porous network with Ir or Pt present across the layer. A urea oxidation reaction (UOR) was tested in 1 M NaOH + 0.33 M urea by cyclic voltammetry and chronoamperometry at +0.40 V vs. SCE (60 min). Smooth Ni showed near-zero current. Porous Ni resulted in ~11 mA cm−2 initially and ~9 mA cm−2 after 60 min. Porous Ni–Ir started at ~7 mA cm−2 and fell to ~2 mA cm−2 within 5 min, indicating fast deactivation, likely due to Ir-oxide formation that suppresses the Ni2+/Ni3+ redox couple. Porous Ni–Pt remained at ~11 mA cm−2 over 60 min, consistent with a stable Ni–Pt effect in which Pt aids urea adsorption/activation while Ni provides the redox path for oxidation. Overall, Pt improves UOR performance, whereas Ir lowers it under these conditions.
