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Enabling Efficient Oxygen Reduction Reaction with Pt Single Atoms on Carbide: A Phosphorus-Doped Mo2C Interface
Changwei Shi1,2, Xingmao Jiang1,2, Xueqiang Qi3,4
1School of Chemical Engineering and Pharmacy, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, China.
Nano Letters
|October 29, 2025
Summary
A new catalyst, Pt/P-Mo2C, enhances the oxygen reduction reaction (ORR) for efficient energy conversion. This phosphorus-doped material optimizes electronic interactions, boosting catalyst performance in electrochemical applications.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- Efficient oxygen reduction reaction (ORR) catalysts are crucial for electrochemical energy conversion.
- Developing cost-effective and high-performance ORR catalysts remains a significant challenge.
Purpose of the Study:
- To develop a novel heterostructured electrocatalyst for enhanced ORR activity.
- To investigate the role of phosphorus doping and interfacial electronic structure modulation in catalyst performance.
Main Methods:
- Synthesis of a heterostructure comprising phosphorus-doped Mo2C and atomically dispersed Pt sites (Pt/P-Mo2C) via a confined polymerization approach.
- Characterization of the catalyst's electronic structure and ORR performance in alkaline media.
Main Results:
- The Pt/P-Mo2C catalyst exhibited optimized interfacial electronic structure with a downshifted d-band center.
- Achieved a high half-wave potential (E1/2) of 0.91 V for ORR in alkaline media.
- Demonstrated excellent catalytic activity and stability for the oxygen reduction reaction.
Conclusions:
- The developed Pt/P-Mo2C catalyst shows significant promise for next-generation ORR applications.
- Interfacial electron engineering is a key strategy for designing advanced electrocatalysts.
- The study presents a versatile approach for integrating single-atom noble metals with carbide supports.
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