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Heterogeneous Fe-Doped Ni(OH) 2 Grown on Nickel Mesh by Electrodeposition for Efficient Alkaline Oxygen Evolution Reaction.
- Source :
-
Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2023 Dec 11; Vol. 29 (69), pp. e202302055. Date of Electronic Publication: 2023 Oct 30. - Publication Year :
- 2023
-
Abstract
- Designing highly excellent and stable catalysts for alkaline oxygen evolution reaction (OER) is gradually pivotal for clean energy development. In this work, a heterogeneous Fe-doped Ni(OH) <subscript>2</subscript> (Ni/Fe-0.1) was developed via simple one-step electrodeposition onto nickel mesh. The heterogeneous interface structure generates sufficient active sites, significantly improving OER performance with an overpotential of 174 mV at 10 mA cm <superscript>-2</superscript> (η <subscript>10</subscript> ), while Tafel slope is only 43.0 mV dec <superscript>-1</superscript> . In particular, Ni/Fe-0.1 is still able to operate stably at a current density of 1 A cm <superscript>-2</superscript> for 100 h without obvious potential decay. The oxidation of Ni <superscript>2+</superscript> to Ni <superscript>3+</superscript> was detected by X-ray photoelectron spectroscopy, proving that the heterogeneous catalyst could stabilize the high-valence state of nickel as active sites to its superior OER performance. This work provides a convenient synthetic strategy for forming heterogeneous catalysts toward efficient water electrolysis.<br /> (© 2023 Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3765
- Volume :
- 29
- Issue :
- 69
- Database :
- MEDLINE
- Journal :
- Chemistry (Weinheim an der Bergstrasse, Germany)
- Publication Type :
- Academic Journal
- Accession number :
- 37720979
- Full Text :
- https://doi.org/10.1002/chem.202302055