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Dual-Function Electrocatalytic Activity Unleashed by FeMo-Graphdiyne@Ni3S2 with Engineered Heterointerfaces.

Yan Jiang1, Hongli Jia2, Manyu Liu1

  • 1Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China.

Precision Chemistry
|June 26, 2026
PubMed
Summary

This study created graphdiyne (GDY) on polyoxometalate (POM)-derived sulfides, forming sp-C-S-M heterointerfaces for efficient oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) electrocatalysis.

Keywords:
dual-function electrolytic watergraphdiyneheterointerfaceoverall water splittingpolyoxometalate

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Developing efficient electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is crucial for renewable energy technologies.
  • Polyoxometalate (POM)-derived sulfides and graphdiyne (GDY) are promising materials, but their synergistic integration requires further investigation.

Purpose of the Study:

  • To construct sp-C-S-M heterointerfaces between metal sulfides (Fe3S4 and MoS2) and GDY.
  • To investigate the enhanced bifunctional OER and HER electrocatalytic activity resulting from these heterointerfaces.
  • To elucidate the roles of electronic interactions and interfacial architecture in boosting catalytic performance.

Main Methods:

  • In situ growth of graphdiyne (GDY) on polyoxometalate (POM)-derived sulfide surfaces.
  • Fabrication of sp-C-S-M heterointerfaces using Fe3S4 and MoS2.
  • Electrocatalytic performance evaluation for OER and HER, including overpotential measurements at 10 mA cm-2.

Main Results:

  • The constructed heterointerfaces significantly enhanced synergistic interactions between POM-derived sulfides and GDY.
  • Rapid charge transfer and an increased number of active sites were observed, boosting intrinsic catalytic activity.
  • The catalyst achieved low overpotentials of 132 mV for HER and 218 mV for OER at 10 mA cm-2.

Conclusions:

  • The study demonstrates that electronic interactions and interfacial architecture are critical for enhancing HER and OER activities.
  • The developed sp-C-S-M heterointerfaces offer a promising strategy for designing high-performance bifunctional electrocatalysts.
  • This work provides valuable insights into the rational design of advanced catalytic materials for energy conversion.