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Core-bishell NiFe@NC@MoS2 for boosting electrocatalytic activity towards ultra-efficient oxygen evolution reaction.
- Source :
-
Journal of Colloid & Interface Science . Nov2024, Vol. 674, p823-833. 11p. - Publication Year :
- 2024
-
Abstract
- [Display omitted] Designing and developing suitable oxygen evolution reaction (OER) catalysts with high activity and stability remain challenging in electrolytic water splitting. Hence, NiFe@NC@MoS 2 core-bishell composites wrapped by molybdenum disulphide (MoS 2) and nitrogen-doped graphene (NC) were prepared using hydrothermal synthesis in this research. NiFe@NC@MoS 2 composite exhibits excellent performance with an overpotential of 288 mV and a Tafel slope of 53.2 mV·dec−1 at a current density of 10 mA·cm−2 in 1 M KOH solution, which is superior to commercial RuO 2. NC and MoS 2 bishells create profuse edge active sites that enhance the adsorption ability of OOH* while lowering the overall overpotential of the product and improving its oxygen precipitation performance. The density function theory(DFT) analysis confirms that the layered MoS 2 in NiFe@NC@MoS 2 provides additional edge active sites and enhances electron transfer, thus increasing the intrinsic catalytic activity. This research paves a novel way for developing OER electrocatalysts with excellent catalytic performance. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 674
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 178884771
- Full Text :
- https://doi.org/10.1016/j.jcis.2024.06.194