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Updated: Jun 11, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

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Published on: April 27, 2018

A crystalline-amorphous interface engineering in Fe-doped NiP electrocatalyst for highly efficient oxygen evolution

Shuai Cao¹, Xiaoming Fan^2,3, Li Wei^2,3

¹Traditional Chinese Medicine College, Bozhou University, 236800 Bozhou, Anhui, PR China.

Dalton Transactions (Cambridge, England : 2003)

|April 11, 2023

Summary

A novel Fe-doped NiP electrocatalyst with a hierarchical particle-sheet structure significantly enhances the oxygen evolution reaction (OER). This catalyst offers reduced overpotential and fast kinetics, crucial for renewable energy applications.

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Published on: December 6, 2021

Area of Science:

Electrochemistry
Materials Science
Renewable Energy

Background:

Oxygen evolution reaction (OER) is vital for clean energy systems like solar fuels and water splitting.
Current OER catalysts face challenges with sluggish kinetics and high overpotentials, hindering simultaneous optimization of reaction rate and efficiency.

Purpose of the Study:

To develop a novel electrocatalyst for efficient oxygen evolution reaction (OER).
To investigate the performance of a hierarchical particle-sheet structured Fe-doped NiP electrocatalyst for OER and overall water splitting.

Main Methods:

Synthesis of a hierarchical particle-sheet structured Fe-doped NiP electrocatalyst.
Electrochemical characterization of the catalyst for OER performance, including overpotential and Tafel slope measurements.
Testing the catalyst in an overall water-splitting electrolytic cell.

Main Results:

The Fe-doped NiP electrocatalyst achieved low OER overpotentials of 204 mV at 20 mA cm^-2, 225 mV at 100 mA cm^-2, and 231 mV at 300 mA cm^-2.
Demonstrated fast reaction kinetics with a remarkable Tafel slope of 25 mV dec^-1.
Achieved overall water splitting at a low voltage of 1.446 V for 10 mA cm^-2 and showed stable operation at high current densities (500-1000 mA cm^-2).

Conclusions:

The hierarchical Fe-doped NiP electrocatalyst effectively reduces OER overpotential and improves kinetics.
This catalyst shows significant potential for commercial applications in water splitting and other electrochemical energy systems due to its high efficiency and stability.