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Interfacial electron transfer triggered reversible hydrogen spillover effect boosts high-efficient hydrogen

Yukun Chang1, Guangshun Ran1, Xing Cheng2

  • 1State Key Laboratory of Materials Low-Carbon Recycling, College of Material Science and Engineering, Beijing University of Technology, 100124, Beijing, PR China.

Journal of Colloid and Interface Science
|July 23, 2025
PubMed
Summary
This summary is machine-generated.

We developed a novel PtCoNiCuZn/WCxN1-x electrode that uses interfacial electron transfer to enable reversible hydrogen spillover, significantly boosting hydrogen evolution reaction (HER) performance and stability for sustainable hydrogen production.

Keywords:
HeterostructureInterfacial electron transferReversible hydrogen spilloverSelf-supported electrode

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • The mechanism of interfacial electron transfer in reversible hydrogen spillover for enhanced hydrogen evolution reaction (HER) kinetics is not well understood.
  • Developing efficient and stable electrocatalysts is crucial for sustainable hydrogen production.

Purpose of the Study:

  • To investigate the role of interfacial electron transfer in reversible hydrogen spillover for HER.
  • To design and synthesize a novel heterostructure electrode for enhanced HER performance.
  • To elucidate the mechanism behind the observed catalytic activity and stability.

Main Methods:

  • Synthesis of a lattice-matched PtCoNiCuZn/WCxN1-x heterostructure electrode.
  • Advanced characterization techniques to analyze interface properties and charge distribution.
  • Electrochemical testing to evaluate HER performance and stability.
  • Density functional theory (DFT) calculations to model the reaction mechanism.

Main Results:

  • The PtCoNiCuZn/WCxN1-x electrode exhibited exceptional HER performance with a mass activity 22 times higher than commercial Pt/C.
  • The electrode demonstrated remarkable stability for over 300 hours at 10 mA cm⁻².
  • Characterization and DFT calculations revealed interfacial electron transfer driving reversible hydrogen spillover via a built-in electric field.

Conclusions:

  • Interfacial electron transfer is key to reversible hydrogen spillover, enhancing HER kinetics.
  • The designed heterostructure electrode offers a promising strategy for highly active and stable electrocatalysts.
  • This work provides fundamental insights for designing advanced materials for sustainable hydrogen production.