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Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/654154E8-8465-439C-8FD3-C634433D2DA7 | - |
| Identifier | https://doi.org/10.1016/j.rechem.2023.101216 | - |
| Identifier | https://www.sciencedirect.com/science/article/pii/S2211715623004551 | - |
| Language | en | - |
| Extent | 8 pages | en |
| Title | One-step electrodeposition of NiS heterostructures on nickel foam electrodes for hydrogen evolution reaction: on the impact of thiourea content | en |
| Creator | Poimenidis Ioannis | en |
| Creator | Ποιμενιδης Ιωαννης | el |
| Creator | Lykaki Maria | en |
| Creator | Λυκακη Μαρια | el |
| Creator | Papakosta Nikandra | en |
| Creator | Loukakos Panagiotis | en |
| Creator | Kallithrakas-Kontos Nikolaos | en |
| Creator | Καλλιθρακας-Κοντος Νικολαος | el |
| Creator | Konsolakis Michail | en |
| Creator | Κονσολακης Μιχαηλ | el |
| Publisher | Elsevier | en |
| Description | PL, NP acknowledge financial support from the European Union's Horizon 2020 research and innovation program under grant agreement no 871124 Laserlab-Europe. The authors would like to acknowledge the HELLAS-CH national infrastructure (MIS 5002735) implemented under Action for Strengthening Research and Innovation Infrastructures, funded by the Operational Programme Competitiveness, Entrepreneurship, and Innovation (NSRF 2014-2020) and co -financed by Greece and the European Union (European Regional Development Fund). | en |
| Content Summary | Herein, we report on the one-step growth of nickel sulfide (NiS) heterostructures on nickel foam (NF) substrate via a facile electrodeposition method, employing Ni(NO3)2·6H2O and CH4N2S as Ni and S precursors, respectively. For the first time, a systematic study was carried out on the impact of the Ni/S molar ratio on the electrochemical performance of as-prepared electrodes for water splitting. The optimum performance was obtained for a Ni:S ratio equal to 2:1, whereas lower or higher ratios resulted in much inferior performance. The NiS@NF electrode with a Ni:S ratio of 2:1 exhibited the lowest overpotentials |η10| = 136 mV, |η100| = 209 mV, extremely low Tafel slope (60 mV dec-1), and very high double layer capacitance value (2.78 mF cm−2). Field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), and X-ray photoelectron spectroscopy (XPS) revealed the formation of a coral-like nanoarchitecture, resulting in enhanced HER activity. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by-nc-nd/4.0/ | en |
| Date of Item | 2025-05-23 | - |
| Date of Publication | 2023 | - |
| Subject | Alkaline electrolysis | en |
| Subject | HER reaction | en |
| Subject | Electrodeposition on Ni foam | en |
| Subject | Nickel sulfide heterostructures | en |
| Subject | Thiourea | en |
| Bibliographic Citation | I. A. Poimenidis, M. Lykaki, N. Papakosta, P. A. Loukakos, N. Kallithrakas Kontos, and M. Konsolakis, “One-step electrodeposition of NiS heterostructures on nickel foam electrodes for hydrogen evolution reaction: on the impact of thiourea content,” Results Chem., vol. 6, Dec. 2023, doi: 10.1016/j.rechem.2023.101216. | en |
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