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Updated: Aug 4, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
High-Performance Intermetallic Pt3Co/C Electrocatalyst for the Oxygen Reduction Reaction Synthesized by
Zhengying Zhang1, Dong Fang1, Liyang Li1
1Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, P. R. China.
Researchers developed novel platinum-cobalt (Pt-Co) alloy nanoparticles using a "pre-lithiation-deposition" strategy for enhanced fuel cell catalysts. This method significantly boosts catalytic activity and durability for oxygen reduction reactions, paving the way for sustainable energy solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Sustainable Energy
Background:
- Fuel cells offer a sustainable alternative to conventional energy systems.
- Developing efficient and durable platinum (Pt)-based catalysts is crucial for fuel cell technology.
- Current Pt catalysts face challenges in activity and stability for practical applications.
Purpose of the Study:
- To synthesize novel Pt-Co/C nanoparticles for improved electrocatalytic performance.
- To investigate the effect of a "pre-lithiation-deposition" strategy on catalyst activity and durability.
- To develop high-performance, low-cost electrocatalysts for oxygen reduction reactions.
Main Methods:
- Preparation of Pt3Co/C nanoparticles (approx. 4.45 nm) via a "pre-lithiation-deposition" strategy.
- Heat treatment of catalysts at 600°C.
- Electrochemical evaluation of oxygen reduction reaction (ORR) activity and durability through accelerated testing (20k cycles).
Main Results:
- The Pt3Co/C-600 catalyst exhibited superior mass activity (0.69 A/mg) and specific activity (1.01 mA/cm²) compared to Pt/C-600.
- The "pre-lithiation" strategy significantly enhanced catalyst durability, with Pt3Co/C-600 retaining 98.3% of its activity after 20k cycles, versus 42.5% for non-pre-lithiated samples.
- Strong interactions between carbon carriers and Pt-Co nanoparticles due to alloying and pre-lithiation contributed to enhanced performance.
Conclusions:
- The "pre-lithiation-deposition" strategy is effective in creating highly active and durable Pt-Co/C electrocatalysts.
- Pt-Co alloy catalysts demonstrate significant potential for advancing fuel cell technology.
- This approach offers a promising pathway for developing cost-effective, high-performance electrocatalysts for sustainable energy applications.
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