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Related Experiment Video

Updated: Oct 4, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Vanadium doped FeP nanoflower with optimized electronic structure for efficient hydrogen evolution.

Xin-Yu Zhang1, Feng-Ting Li2, Zhuo-Ning Shi2

  • 1State Key Laboratory of Heavy Oil Processing, College of Chemistry & Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.

Journal of Colloid and Interface Science
|February 12, 2022
PubMed
Summary
This summary is machine-generated.

Vanadium-doped iron phosphide (V-FeP) nanoflowers enhance hydrogen evolution reaction (HER) electrocatalyst activity by optimizing electronic structure. This low-cost catalyst shows promise for efficient and stable electrolytic water splitting.

Keywords:
Alkaline solutionHydrogen evolution reactionIron phosphateLarge current densityVanadium doping

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Designing efficient electrocatalysts for the hydrogen evolution reaction (HER) is crucial for sustainable energy technologies.
  • Iron-based phosphates are promising HER catalysts due to low cost and abundance, but their activity needs improvement.

Purpose of the Study:

  • To enhance the HER activity of iron phosphide by doping with vanadium, guided by electronic structure theories.
  • To investigate the catalytic mechanism and performance of V-doped FeP nanoflowers for electrolytic water splitting.

Main Methods:

  • Synthesis of V-doped FeP nanoflowers on iron foam.
  • Density Functional Theory (DFT) simulations to understand electronic structure and reaction mechanisms.
  • Electrochemical characterizations, including overpotential measurements and long-term stability tests.

Main Results:

  • V-doping effectively lowers the d-band center, enhancing water dissociation and reducing hydrogen formation energy barriers.
  • The V-FeP catalyst exhibits low overpotentials (e.g., ~149 mV at 100 mA cm⁻²) and excellent stability (>24 h) in 1 M KOH.
  • The V-FeP based electrolyzer demonstrates low cell voltage and over 100-h stability at high current density.

Conclusions:

  • V-doping is a viable strategy to significantly boost the HER performance of iron phosphide electrocatalysts.
  • The V-FeP nanoflower catalyst shows great potential for practical applications in industrial water electrolysis.
  • This work provides insights for designing advanced, low-cost electrocatalysts based on iron phosphides.