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Synergy Between Ru3 Nanoclusters and Pt Nanoparticles for High-Efficiency Alkaline Hydrogen Evolution Reaction
Xiuting Fu1, Xuxin Kang2, Ruhao Wang1
1State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, China.
Efficient alkaline hydrogen evolution reaction (HER) catalysis was achieved using a novel dual-site catalyst. This catalyst, combining ruthenium clusters and platinum nanoparticles, offers superior performance for hydrogen production.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Efficient alkaline hydrogen evolution reaction (HER) catalysis is crucial for sustainable hydrogen production.
- Single-component catalysts face challenges in simultaneously optimizing water adsorption, H-OH dissociation, and hydrogen bond energy.
- Developing advanced catalysts requires innovative design strategies for enhanced performance.
Purpose of the Study:
- To design and investigate a dual-site synergistic catalyst for efficient alkaline HER.
- To explore the catalytic activity and mechanism of atomically precise Ru3 nanoclusters combined with Pt nanoparticles.
- To provide new insights into atomic-scale catalyst design for energy applications.
Main Methods:
- Synthesis of a dual-site catalyst comprising Ru3 nanoclusters and Pt nanoparticles supported on carbon (Ru3@Pt NPs/C).
- Electrochemical characterization including current density and overpotential measurements.
- Density functional theory (DFT) calculations to elucidate the catalytic mechanism.
Main Results:
- Ru3@Pt NPs/C demonstrated superior catalytic activity, reaching 10 mA cm-2 at an ultra-low overpotential of 10 mV.
- The mass activity of Ru3@Pt NPs/C was 1.85 times higher than commercial Pt/C.
- A low cell voltage of 1.75 V at 1 A cm-2 was achieved in an anion exchange membrane electrolyzer.
Conclusions:
- The dual-site synergistic catalyst Ru3@Pt NPs/C exhibits excellent performance for alkaline HER.
- A relay catalytic mechanism involving preferential water dissociation at Ru sites and H recombination at Pt sites was identified.
- This study presents a novel dual-component catalytic architecture for advanced catalyst design.
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