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Updated: Mar 21, 2026

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
Published on: August 18, 2023
Separating hydrogen and oxygen evolution in alkaline water electrolysis using nickel hydroxide
Long Chen1, Xiaoli Dong1, Yonggang Wang1
1Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200433, China.
This study introduces a novel alkaline water electrolysis method using nickel hydroxide to separate hydrogen and oxygen production, enhancing renewable energy utilization for sustainable hydrogen generation.
Area of Science:
- Electrochemistry
- Materials Science
- Renewable Energy
Background:
- Alkaline water electrolysis offers a sustainable route for hydrogen production.
- Challenges include gas mixing and efficient use of intermittent renewable energy.
Purpose of the Study:
- To decouple hydrogen and oxygen production in alkaline water electrolysis.
- To improve the utilization of renewable energy for hydrogen generation.
Main Methods:
- Utilized nickel hydroxide as a redox mediator in alkaline water electrolysis.
- Developed a system separating hydrogen evolution at the cathode from oxygen evolution.
Main Results:
- Successfully decoupled hydrogen and oxygen production, preventing gas mixing.
- Demonstrated a NiOOH-Zn battery configuration for energy storage and hydrogen production.
Conclusions:
- The proposed architecture offers a potential solution for efficient renewables-to-hydrogen conversion.
- This method enhances the sustainability of hydrogen production through improved energy management.
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