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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
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NiO@conducting polymer electrocatalyst for hydrazine-assisted oxygen evolution reaction through water splitting
Ekram H El-Ads1, Moshira M Khalil2,3, Mahmoud A Abd El-Ghaffar4
1Faculty of Science, Chemistry Department, Cairo University, Giza, 12613, Egypt. ekram@sci.cu.edu.eg.
Scientific Reports
|July 27, 2025
Summary
This study presents a novel nickel oxide nano-catalyst composite for efficient hydrazine-assisted water splitting. This method offers a low-cost, high-efficiency pathway for hydrogen production with improved electrocatalytic activity.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- Electrochemical water splitting for hydrogen production is energy-intensive due to slow oxygen evolution reaction (OER) kinetics.
- Hydrazine oxidation (HyzOR) preceding OER offers a promising route to lower overpotentials and enhance reaction rates.
- Developing efficient electrocatalysts is crucial for advancing hydrogen generation technologies.
Purpose of the Study:
- To develop a novel composite electrocatalyst for efficient hydrazine-assisted water splitting.
- To investigate the electrocatalytic performance of the composite for both hydrazine oxidation and oxygen evolution reactions.
- To evaluate the stability and activation energy of the hydrazine-assisted water splitting process.
Main Methods:
- A single-step synthesis of a nickel oxide (NiO) nano-catalyst mixed with poly (m-toluidine) and poly (3,4-ethylenedioxythiophene) on a carbon paste electrode (CPE).
- Electrochemical characterization of the composite material in an alkaline KOH medium.
- Testing the electrocatalytic activity for hydrazine oxidation-oxygen evolution reaction (HyzOR-OER) and assessing stability during electrolysis.
Main Results:
- The NiO-polymer composite modified CPE exhibited significantly enhanced electrocatalytic activity for HyzOR-OER compared to bare CPE, NiO, and the polymer mixture alone.
- The composite demonstrated stable current response during prolonged hydrazine-assisted water splitting electrolysis.
- A low activation energy of 2.90 kJ/mol was recorded, indicating facilitated HyzOR-OER kinetics at the composite surface.
Conclusions:
- The developed NiO-polymer composite is a highly effective electrocatalyst for hydrazine-assisted water splitting.
- This approach presents a feasible and efficient method for low-cost hydrogen production.
- The findings pave the way for practical applications in renewable energy and hydrogen generation.
Keywords:
Conducting polymersElectro-catalystHydrazine-assisted water splittingHydrogen productionNickel oxideOxygen evolution reactionMore Related Videos
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