Mild and Fast Construction of Ni-Based Electrodes for Industrial-Grade Water Splitting

Achieving high−efficiency and stable hydrogen evolution from water splitting is a great challenge. Herein, a facilely prepared two−dimenssional self−supported catalytic electrode with excellent stability is constructed for large−scale hydrogen production from alkaline simulated seawater. The bifunct...

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Bibliographic Details
Published in:Inorganics 2023-04, Vol.11 (4), p.170
Main Authors: Lu, Zikang, Liang, Rikai, Shao, Yuqi, Hao, Weiju
Format: Article
Language:English
Subjects:
Additives
Adhesive strength
Analysis
chemical etching
Chemical reactions
Corrosion resistance
Efficiency
Electrodes
Energy
Etching
Gases
HER
Hydrogen
Hydrogen evolution
Hydrogen production
industrial−grade water splitting
Metal foams
Methods
mild and fast construction
Nickel
OER
Oxygen evolution reactions
Properties
Scanning electron microscopy
Seawater
Spectrum analysis
Splitting
Stability
Substrates
Voltammetry
Water splitting
Work stations
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Summary:Achieving high−efficiency and stable hydrogen evolution from water splitting is a great challenge. Herein, a facilely prepared two−dimenssional self−supported catalytic electrode with excellent stability is constructed for large−scale hydrogen production from alkaline simulated seawater. The bifunctional catalytic electrode is prepared by a fast and mild one−step of sodium borohydride etching on a nickel foam (NF) substrate without adding other additives (NF@NiBx−3h). The overpotential of the hydrogen/oxygen evolution reaction (HER/OER) in alkaline−simulated seawater at 10 mA cm−2 is 96 mV and 261 mV. At 200 mA cm−2, the NF@NiBx−3h electrode shows good stability over 7 days throughout the water splitting process due to the corrosion resistance of the NF substrate, and strong adhesion between the Ni−B active material and the substrate. This work demonstrates a novel strategy for fabricating catalytic electrodes with high−performance, low cost and excellent stability.
ISSN:2304-6740
2304-6740
DOI:10.3390/inorganics11040170