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Updated: Jul 26, 2025

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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Boosting Alkaline Hydrogen Evolution Reaction through Water Structure Manipulation.

Yan Jiao1, Yao Zheng1

  • 1School of Chemical Engineering, The University of Adelaide, North Terrace, SA-5005, Australia.

Angewandte Chemie (International Ed. in English)
|June 17, 2023
PubMed
Summary
This summary is machine-generated.

Researchers improved alkaline hydrogen evolution reaction (HER) by manipulating water structure with electric fields at the electrode-electrolyte interface. This breakthrough, using IrRu single-atom sites, accelerates water dissociation for enhanced HER efficiency.

Keywords:
Alkaline Hydrogen Evolution ReactionInterface Water StructureLocal Electric FieldSingle-Atom SiteWater Dissociation

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Surface Science

Background:

  • Traditional electrocatalyst design for alkaline hydrogen evolution reaction (HER) focused on intermediate adsorption.
  • Recent advances explore interfacial water structure manipulation for improved HER performance.

Purpose of the Study:

  • To investigate the impact of atomically localized electric fields on interfacial water structure for alkaline HER.
  • To develop novel electrocatalyst designs for enhanced water dissociation and hydrogen evolution.

Main Methods:

  • Utilized IrRu dizygotic single-atom sites to create localized electric fields.
  • Employed advanced modeling, characterization techniques, and electrochemical measurements.
  • Examined the interaction between water molecules and the catalyst surface at the electrode-electrolyte interface.

Main Results:

  • Demonstrated that localized electric fields significantly accelerate water dissociation.
  • Achieved a marked improvement in alkaline HER performance using the novel single-atom site design.
  • Provided detailed insights into water-catalyst interactions and their effect on kinetics.

Conclusions:

  • Manipulating interfacial water structure via localized electric fields is a promising strategy for boosting alkaline HER.
  • IrRu dizygotic single-atom sites offer a new platform for designing highly efficient electrocatalysts.
  • The study deepens the understanding of water dissociation mechanisms in electrocatalysis.