Related Experiment Video
Updated: Aug 5, 2025
09:02
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
7.9K
Atomically Dispersed NiN Site with High Oxygen Electrocatalysis Performance Facilely Produced via a Surface
Qiankun Hou1, Kang Liu2, Walid Al-Maksoud3
1College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, People's Republic of China.
ACS Applied Materials & Interfaces
|March 27, 2023
Summary
This study presents a simple, scalable method to create atomically dispersed nickel (Ni) electrocatalysts for efficient oxygen reactions. The novel approach avoids high temperatures, enabling green industrial production of single-site catalysts.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Atomically dispersed catalysts offer high activity and selectivity but are challenging to prepare at scale.
- Current methods often require high temperatures and complex procedures, hindering industrial application.
Purpose of the Study:
- To develop a straightforward, scalable, and mild synthesis strategy for nonprecious-metal single-site catalysts.
- To demonstrate the catalytic performance of atomically dispersed nickel (Ni) electrocatalysts in oxygen evolution and reduction reactions.
Main Methods:
- A two-step synthesis involving immobilization of a preorganized NiNₓ complex on a substrate via organic thermal reactions.
- Scalable preparation achieved under mild conditions with quantitative yield.
Main Results:
- Successful synthesis of atomically dispersed Ni electrocatalyst in tens of grams scale.
- Excellent and tunable catalytic performance in both oxygen evolution and reduction reactions.
- High stability, reproducibility, and tolerance to high Ni concentration, avoiding nanoparticle formation.
Conclusions:
- The developed strategy offers a practical, green, and scalable method for industrial manufacturing of nonprecious-metal single-site catalysts.
- The atomically dispersed NiNₓ sites provide predictable structure and superior catalytic properties.
