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Co-electrodeposition of Ni-La coating on Ni foam for electrocatalytic hydrogen evolution reaction.
- Source :
- Transition Metal Chemistry; Apr2023, Vol. 48 Issue 2, p125-133, 9p
- Publication Year :
- 2023
-
Abstract
- Electrocatalytic water splitting to produce hydrogen is a promising route to provide green hydrogen on a large scale. To explore non-noble metal electrocatalysts with high performance is still a challenge. Herein, a one-step electrodeposition way is developed to construct the heterostructural (NiO-La<subscript>2</subscript>O<subscript>3</subscript>)/(Ni-La)/NiO/Ni electrocatalysts on Ni foam. The dark Ni-La coating was prepared by co-electrodeposition from an aqueous solution containing LaCl<subscript>3</subscript> and NiCl<subscript>2</subscript> with a molar concentration ratio of 1:5. Among these heterostructural Ni-based electrocatalysts, an excellent HER activity is achieved: an overpotential of 22 mV at the current density of 10 mA cm<superscript>−2</superscript> in 1 M KOH solution. It is demonstrated that the introduction of La significantly reduces the overpotential for HER. The higher the La content in the Ni-La coating of these electrocatalysts, the better the electrocatalytic HER performance was exhibited. This work provides a facile and inexpensive route to prepare Ni-La coating on electrodes in an aqueous solution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03404285
- Volume :
- 48
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Transition Metal Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 163614263
- Full Text :
- https://doi.org/10.1007/s11243-023-00529-8