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Pulse Electrodeposition of a Superhydrophilic and Binder-Free Ni-Fe-P Nanostructure as Highly Active and Durable Electrocatalyst for Both Hydrogen and Oxygen Evolution Reactions
- Pulse Electrodeposition of a Superhydrophilic and Binder-Free Ni-Fe-P Nanostructure as Highly Active and Durable Electrocatalyst for Both Hydrogen and Oxygen Evolution Reactions
- Darband, Ghasem Barati; Aliofkhazraei, Mahmood; Hyun, Suyeon; Shanmugam, Sangaraju
- DGIST Authors
- Shanmugam, Sangaraju
- Issue Date
- ACS Applied Materials and Interfaces, 12(48), 53719-53730
- Article Type
- Author Keywords
- pulse electrodeposition; hydrogen evolution reaction; oxygen evolution reaction; Ni-Fe-P nanostructure
- BIFUNCTIONAL ELECTROCATALYST; EFFICIENT; CATALYSTS; NANOSHEETS; CO; COATINGS; FOAM
- Development and fabrication of electrodes with favorable electrocatalytic activity, low-cost, and excellent electrocatalytic durability are one of the most important issues in the hydrogen production area using the electrochemical water splitting process. We use the pulse electrodeposition method as a versatile and cost-effective approach to synthesize three-dimensional Ni-Fe-P electrocatalysts on nickel nanostructures under various applied frequencies and duration times, in which nanostructures exhibit excellent intrinsic electrocatalytic activity. Benefiting from the three-dimensional structure, as well as the simultaneous presence of the three elements nickel, iron, and phosphorus, the electrode fabricated at the optimal conditions has indicated outstanding electrocatalytic activity with a η10 of 66 and 198 mV for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, in a 1.0 M KOH solution. Also, the water electrolysis cell constructed with this electrode and tested as a bifunctional electrode exhibited 1.508 V for 10 mA cm-2 in overall water splitting. In addition, the lowest amount of potential change in 100 mA cm-2 was observed for HER and OER, indicating excellent electrocatalytic stability. This study proposes a binder-free and economical technique for the synthesis of three-dimensional electrocatalysts. © 2020 American Chemical Society.
- American Chemical Society
- Related Researcher
Advanced Energy Materials Laboratory
Electrocatalysts for fuel cells; water splitting; metal-air batteries; Polymer electrolyte membranes for fuel cells; flow batteries; Hydrogen generation and utilization
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- Department of Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles
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