Szczegóły publikacji
Opis bibliograficzny
Hydrogen bubble size distribution on nanostructured Ni surfaces: electrochemically active surface area versus wettability / Lukas Krause, Katarzyna SKIBIŃSKA, Hannes Rox, Robert Baumann, Mateusz M. MARZEC, Xuegeng Yang, Gerd Mutschke, Piotr ŻABIŃSKI, Andrés Fabián Lasagni, Kerstin Eckert // ACS Applied Materials & Interfaces ; ISSN 1944-8244. — 2023 — vol. 15 iss. 14, s. 18290–18299. — Bibliogr. s. 18297–18299, Abstr. — Publikacja dostępna online od: 2023-04-03. — K. Skibińska - dod. afiliacja: Centrum Badań i Rozwoju Technologii dla Przemysłu S. A., Warszawa, Poland
Autorzy (10)
- Krause Lukas
- AGHSkibińska Katarzyna
- Rox Hannes
- Baumann Robert
- AGHMarzec Mateusz M.
- Yang Xuegeng
- Mutschke Gerd
- AGHŻabiński Piotr
- Lasagni Andrés Fabián
- Eckert Kerstin
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 146369 |
|---|---|
| Data dodania do BaDAP | 2023-04-20 |
| Tekst źródłowy | URL |
| DOI | 10.1021/acsami.2c22231 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | ACS Applied Materials & Interfaces |
Abstract
Emerging manufacturing technologies make it possible to design the morphology of electrocatalysts on the nanoscale in order to improve their efficiency in electrolysis processes. The current work investigates the effects of electrode-attached hydrogen bubbles on the performance of electrodes depending on their surface morphology and wettability. Ni-based electrocatalysts with hydrophilic and hydrophobic nanostructures are manufactured by electrodeposition, and their surface properties are characterized. Despite a considerably larger electrochemically active surface area, electrochemical analysis reveals that the samples with more pronounced hydrophobic properties perform worse at industrially relevant current densities. High-speed imaging shows significantly larger bubble detachment radii with higher hydrophobicity, meaning that the electrode surface area that is blocked by gas is larger than the area gained by nanostructuring. Furthermore, a slight tendency toward bubble size reduction of 7.5% with an increase in the current density is observed in 1 M KOH.