Electronic and Interfacial Engineering via Tungsten Incorporation for Robust Overall Water Splitting and Seawater Electrolysis
Waseda University · Graduate School USA · +3 more institutions
Abstract
We report the rational design of a high-performance bifunctional electrocatalyst by incorporating tungsten into oxygen-deficient NiFe layered double hydroxide (NiFeW-LDH) nanosheets grown in situ on nickel foam via a one-pot hydrothermal method. The resulting NiFeW-LDH@NF electrode features a porous nanosheet network that enhances the surface area and interfacial electron transport. Tungsten integration tunes the electronic structure, increases oxygen vacancy concentration, and facilitates water molecule adsorption, thereby improving both oxygen evolution reaction and hydrogen evolution reaction (OER and HER) kinetics in 1.0 M KOH. The optimized catalyst achieves low overpotentials of 325 mV and 356 mV at 100…
Citation impact
- FWCI
- 16.37
- Percentile
- 100%
- References
- 60
Authors
5- RKRajathsing Kalusulingam
Waseda University, Graduate School USA, Daegu University
- SSSaleem Sidra
Jeonbuk National University
- KSKeiko Sasaki
Waseda University
- DHDo Hwan KimCorresponding
National Institute for Fusion Science, Jeonbuk National University
- JHJun Ho ShimCorresponding
Graduate School USA, Daegu University
Topics & keywords
- Oxygen evolution
- Water splitting
- Electrocatalyst
- Nanosheet
- Tungsten
- Electrolysis of water
- Hydrogen production
- Catalysis