Szczegóły publikacji
Opis bibliograficzny
Tuning up catalytical properties of electrochemically prepared nanoconical Co-Ni deposit for HER and OER / Katarzyna SKIBIŃSKA, Konrad WOJTASZEK, Lukas Krause, Anna KULA, Xuegeng Yang, Mateusz M. MARZEC, Marek WOJNICKI, Piotr ŻABIŃSKI // Applied Surface Science ; ISSN 0169-4332. — Tytuł poprz.: Applications of Surface Science. — 2023 — vol. 607 art. no. 155004, s. 1-9. — Bibliogr. s. 8-9, Abstr. — Publikacja dostępna online od: 2022-09-24
Autorzy (8)
Słowa kluczowe
Dane bibliometryczne
ID BaDAP | 142858 |
---|---|
Data dodania do BaDAP | 2022-10-13 |
Tekst źródłowy | URL |
DOI | 10.1016/j.apsusc.2022.155004 |
Rok publikacji | 2023 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Creative Commons | |
Czasopismo/seria | Applied Surface Science |
Abstract
Catalysts can be successfully prepared by a simple electrochemical process. Their surface composition distinguishes catalytic activity toward hydrogen and oxygen evolution reactions. In this work, uniform Co-Ni cones were synthesized using the one-step method from an electrolyte containing a crystal modifier. Electrodeposited layers were oxidized and/or reduced in the furnace at 100 °C. Freshly electrodeposited coating was stored in air atmosphere for seven days. This results in an oxide layer forming on the surface of the catalyst. Changes in the surface composition, confirmed by the XPS method, strongly influenced the wettability, catalytic performance, and size of evolved hydrogen bubbles. The conical Co-Ni surface oxidized in a controlled way possesses the best catalytic activity towards hydrogen and oxygen evolution. Conversely, the spontaneously formed oxide layer decreases the catalytic performance in mentioned reactions compared with the fresh sample. The proper storage of synthesized samples is essential due to their desired catalytic applications. Proposed controlled oxidation can be an accessible way to increase nanomaterials catalytic performance.