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Advances in defect-engineered metal-support interactions for acidic oxygen evolution reaction.

Fangfang Zhu1, Qilong Wu2, Dongdong Zhang3

  • 1School of Advanced Energy and IGCME, Sun Yat-Sen University-Shenzhen Campus, Shenzhen, Guangdong 518107, P. R. China. yaoxd3@mail.sysu.edu.cn.

Materials Horizons
|May 7, 2026
PubMed
Summary

Developing stable catalysts for acidic oxygen evolution reaction (OER) in proton exchange membrane water electrolyzers (PEMWEs) is key. Defects in support materials enhance metal-support interactions, boosting catalyst activity and durability.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Proton exchange membrane water electrolyzers (PEMWEs) require efficient and stable catalysts for acidic oxygen evolution reaction (OER).
  • Reducing reliance on noble metals necessitates advanced catalyst designs.
  • Metal-support interactions (MSI) are critical for balancing catalyst activity and durability.

Purpose of the Study:

  • To review synthesis strategies for defective catalyst supports.
  • To discuss metal-defect interactions in acidic OER catalysis.
  • To highlight advanced characterization and computational methods for understanding interface effects.

Main Methods:

  • Summarizing controllable synthesis strategies for defective supports.
  • Reviewing studies on metal-defect interactions for acidic OER.
  • Highlighting in situ/operando characterization and theoretical computations.

Main Results:

  • Defective supports effectively modulate MSI by tailoring metal site coordination.
  • Defects enhance catalyst stability by suppressing metal dissolution.
  • Understanding metal-defect interactions is crucial for designing advanced OER catalysts.

Conclusions:

  • Defective supports offer a promising route to enhance MSI for efficient and stable acidic OER catalysts.
  • Advanced characterization and computation are vital for elucidating interface effects and reaction mechanisms.
  • Further research into defect engineering is essential for commercializing PEMWEs.