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Core-shell structured PtRu nanoparticles@FeP promoter with an efficient nanointerface for alcohol fuel
Yufei Bao1, Fulong Wang1, Xiaocong Gu1
1School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China. ligang.feng@yzu.edu.cn fenglg11@gmail.com.
Nanoscale
|October 10, 2019
Summary
Researchers developed a novel core-shell PtRu@FeP catalyst, overcoming bottlenecks in direct alcohol fuel cells. This advanced catalyst demonstrates superior performance and stability for alcohol fuel oxidation, significantly enhancing energy conversion efficiency.
Area of Science:
- Catalysis
- Materials Science
- Electrochemistry
Background:
- Direct alcohol fuel cells (DAFCs) face challenges with catalyst efficiency and stability.
- Platinum-Ruthenium (PtRu) catalysts are crucial for alcohol oxidation but can suffer from limitations.
- Developing novel promoters and nanostructures is key to enhancing DAFC performance.
Purpose of the Study:
- To overcome bottlenecks in direct alcohol fuel cells by developing an advanced PtRu catalyst.
- To engineer a core-shell structured PtRu@FeP catalyst with enhanced catalytic properties.
- To investigate the structure-activity relationship and anti-CO poisoning capabilities of the novel catalyst.
Main Methods:
- Synthesis of a core-shell PtRu@FeP hybrid catalyst.
- Surface analysis using spectrometric techniques and morphology observation.
- Electrochemical testing, including cyclic voltammetry and CO oxidation potential measurements.
Main Results:
- Confirmed formation of a PtRu@FeP core-shell nanointerface.
- Demonstrated efficient ligand and electronic effects enhancing catalytic activity.
- Achieved superior anti-CO poisoning ability compared to commercial PtRu/C catalysts.
- Exhibited significantly higher catalytic activity and stability for methanol and ethanol oxidation.
- Reported a 2-fold improvement in specific activity and excellent stability over 1000 cycles.
Conclusions:
- The PtRu@FeP core-shell catalyst effectively overcomes limitations in direct alcohol fuel cells.
- Nanointerface engineering via core-shell structure on FeP promoter enhances PtRu catalytic performance.
- The developed catalyst shows promise for efficient and stable direct alcohol fuel cell applications.
