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Updated: Aug 22, 2025
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
An integrated platinum-nanocarbon electrocatalyst for efficient oxygen reduction
Lei Huang1, Min Wei2, Ruijuan Qi3
1School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan, 430074, China.
A novel platinum-carbon electrocatalyst integrated into a cobalt-nitrogen-nanocarbon matrix significantly enhances oxygen reduction reaction (ORR) efficiency and durability for fuel cells.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Conversion
Background:
- High-performance fuel cells require efficient and durable electrocatalysts.
- Platinum-carbon (Pt-C) catalysts are crucial for oxygen reduction reaction (ORR) but face challenges in activity and stability.
Purpose of the Study:
- To develop an advanced Pt-based electrocatalyst with enhanced ORR performance.
- To improve the mass activity and long-term stability of catalysts for fuel cell applications.
Main Methods:
- Fabrication of a Pt alloy integrated within a cobalt-nitrogen-nanocarbon matrix using a multiscale design principle.
- Electrochemical characterization of the catalyst's ORR activity and stability.
- Performance testing in a hydrogen-air fuel cell.
Main Results:
- The integrated Pt catalyst exhibited 11.7 times higher mass activity compared to commercial Pt catalysts.
- Achieved excellent stability, retaining 98.7% of its performance after 30,000 potential cycles.
- Delivered a high current density of 1.50 A cm⁻² at 0.6 V and a power density of 980 mW cm⁻² in a hydrogen-air fuel cell.
Conclusions:
- The synergistic effects between the Pt alloy, cobalt-nitrogen, and nanocarbon matrix are responsible for the superior ORR efficiency.
- This integrated catalyst represents a significant advancement for durable and high-performance fuel cells.
