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Updated: Jul 28, 2026
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Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
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Promoting nickel oxidation state transformation in NiFe hydroxide nanosheets for efficient oxygen evolution reaction
Wenwen Peng1, Xueqiu Qin1, Xiaocan Mo1
1School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China. zhangyl0109@mailbox.gxnu.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|February 17, 2026
Summary
Synthesizing high oxidation state NiFe hydroxide nanosheets enhances oxygen evolution reaction (OER) catalysis. This novel method yields efficient and stable electrocatalysts for water splitting.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- High oxidation state transition metal species in hydroxide catalysts can improve oxygen evolution reaction (OER) activity.
- Developing efficient and stable electrocatalysts is crucial for water splitting technologies.
Purpose of the Study:
- To present a novel method for synthesizing NiFe hydroxide nanosheets.
- To demonstrate the efficacy of high oxidation state nickel (Ni) in boosting OER activity.
- To provide a scalable synthesis route for advanced electrocatalytic materials.
Main Methods:
- Ambient temperature and pressure synthesis of NiFe hydroxide nanosheets.
- In situ Raman spectroscopy to identify active species.
- Electrochemical testing in 1 M KOH to evaluate OER performance.
Main Results:
- Formation of active Ni3+δOOH species confirmed by in situ Raman spectroscopy.
- Achieved a current density of 10 mA cm-2 at a low overpotential of 222 mV.
- Demonstrated remarkable stability exceeding 2000 hours at 10 mA cm-2.
Conclusions:
- The developed NiFe hydroxide nanosheets are superior Ni-based OER catalysts.
- The novel synthesis approach is promising for gram-scale production of electrocatalytic materials.
- This work offers a new pathway for efficient oxygen evolution reaction in water splitting.
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