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Updated: Jun 2, 2025

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
Published on: August 17, 2016
Enhancing Alkaline Hydrogen Evolution by Regulating H and OH Binding Strength through Strong Metal-Support
Jiaxin Zou1,2, Chunfeng Li1, Lei Wang1,3
1Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore.
Stronger metal-support interaction (MSI) in ruthenium catalysts boosts hydrogen evolution reaction (HER) performance. Optimized Ru-O-CNT catalysts show exceptional activity and stability for HER, even in industrial electrolyzers.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Optimizing metal-support interaction (MSI) is crucial for catalyst performance in chemical reactions.
- Ruthenium (Ru) catalysts are investigated for their potential in the hydrogen evolution reaction (HER).
Purpose of the Study:
- To investigate the effect of varying MSI on the HER performance of Ru-based catalysts.
- To develop highly active and stable catalysts for alkaline HER.
Main Methods:
- Construction of catalyst composites with controlled MSI using ruthenium and various carbon nanotubes.
- Systematic investigation of catalytic performance using electrochemical techniques, including kinetic assessments and voltammetry.
- Testing in an industrial-level electrolyzer setup.
Main Results:
- Catalysts with strong MSI demonstrated superior HER activity.
- The Ru-O-CNT catalyst composite exhibited a low overpotential of 11 mV at 10 mA cm-2 and excellent stability.
- Electrochemical analysis revealed that optimized MSI modulates the binding of *H and *OH intermediates, accelerating the HER.
- An industrial electrolyzer using Ru-O-CNT achieved a low cell voltage of 1.72 V at 1 A cm-2 with high stability.
Conclusions:
- Strong MSI is essential for enhancing the catalytic activity and stability of Ru-based catalysts for alkaline HER.
- The Ru-O-CNT catalyst composite represents a promising material for efficient hydrogen production.
- Optimized MSI in catalysts can significantly improve performance in industrial electrochemical applications.
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