Atomic layer deposition of cobalt phosphate thin films for the oxygen evolution reaction
| Autor: | Mariadriana Creatore, M.C.M. van de Sanden, Wilhelmus M. M. Kessels, T. Goldsweer, V. Di Palma, M. N. Tsampas, Georgios Zafeiropoulos |
|---|---|
| Přispěvatelé: | Plasma & Materials Processing, Interfaces in future energy technologies, Atomic scale processing, Processing of low-dimensional nanomaterials |
| Rok vydání: | 2019 |
| Předmět: |
Oxygen evolution reaction
Materials science Inorganic chemistry 02 engineering and technology 010402 general chemistry Electrocatalyst 01 natural sciences lcsh:Chemistry chemistry.chemical_compound Atomic layer deposition Electrochemistry Thin film Oxygen evolution 021001 nanoscience & nanotechnology 0104 chemical sciences Cobalt phosphate lcsh:Industrial electrochemistry lcsh:QD1-999 chemistry Reversible hydrogen electrode Atomic ratio Electrocatalysis 0210 nano-technology Current density lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 98, Iss, Pp 73-77 (2019) Electrochemistry Communications, 98, 73-77. Elsevier Electrochemistry Communications, 98, 73-77 |
| ISSN: | 1388-2481 |
| Popis: | Electrodeposited cobalt phosphate has been reported as a valid alternative to noble metals as an electrocatalyst for the Oxygen Evolution Reaction (OER). In parallel, Atomic Layer Deposition (ALD) is increasingly being used in (photo)electrocatalytic applications. In this contribution we report on the electrocatalytic activity towards OER of ALD-prepared cobalt phosphate thin films. The selected ALD approach enables tuning of the Co-to-P atomic ratio, which is found to significantly affect the activity of the prepared electrocatalyst. Specifically, concurrently with a Co-to-P ratio increase from 1.6 to 1.9, the current density for OER increases from 1.77 mA/cm2 at 1.8 V vs. RHE (Reversible Hydrogen Electrode) to 2.89 mA/cm2 at 1.8 V vs. RHE. Moreover the sample with a Co-to-P ratio of 1.9 has superior performance when compared to electrodeposited cobalt phosphate thin films reported in the literature. Keywords: Atomic layer deposition, Cobalt phosphate, Electrocatalysis, Oxygen evolution reaction |
| Databáze: | OpenAIRE |
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