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Coupling of NiFe Layered Double Hydroxides with Sulfides for Highly Efficient Urea Electrolysis and Hydrogen Evolution.
- Source :
- Energies (19961073); Feb2023, Vol. 16 Issue 3, p1092, 10p
- Publication Year :
- 2023
-
Abstract
- Urea electrolysis is regarded as a prospective method for energy-saving hydrogen production. However, the practical application of this technology is limited by the lack of high-performance bifunctional catalysts for hydrogen evolution reaction (HER) and urea oxidation reaction (UOR). Herein, a heterostructure catalyst composed of NiFe layered double hydroxide (LDH) and sulfides (NiFe LDH-NiFeS<subscript>x</subscript>/NF) catalysts is prepared via a simple one-step hydrothermal approach. Remarkably, the prepared NiFe LDH-NiFeS<subscript>x</subscript>/NF required 138 mV and 1.34 V to achieve 10 mA cm<superscript>−2</superscript> for HER and UOR in 1 M KOH and 0.33 M urea, respectively. Furthermore, when NiFe LDH-NiFeS<subscript>x</subscript>/NF is used as a cathode for urea electrolysis, only 1.44 V is required at 10 mA cm<superscript>−2</superscript>, which is much lower than the 1.53 V needed for overall water splitting. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19961073
- Volume :
- 16
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Energies (19961073)
- Publication Type :
- Academic Journal
- Accession number :
- 161820126
- Full Text :
- https://doi.org/10.3390/en16031092