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Related Experiment Video

Updated: Dec 31, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
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Advanced Bifunctional Oxygen Reduction and Evolution Electrocatalyst Derived from Surface-Mounted Metal-Organic

Weijin Li1,2, Song Xue2,3, Sebastian Watzele2,3

  • 1Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748, Garching b. München, Germany.

Angewandte Chemie (International Ed. in English)
|January 9, 2020
PubMed
Summary

Surface-mounted NiFe-MOFs act as advanced bifunctional electrocatalysts for oxygen reduction and evolution reactions. This strain modulation approach yields high activity and stability for energy technologies.

Keywords:
Metal-organic frameworksderivativesoxygen evolution reactionoxygen reduction reactionthin films

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Conversion

Background:

  • Metal-organic frameworks (MOFs) are promising catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).
  • These reactions are crucial for energy technologies like electrolyzers, fuel cells, and advanced batteries.

Purpose of the Study:

  • To design an advanced bifunctional ORR/OER electrocatalyst using a strain modulation approach.
  • To investigate the performance of surface-mounted NiFe-MOFs for ORR and OER applications.

Main Methods:

  • Employing a strain modulation strategy on surface-mounted NiFe-MOFs.
  • Electrochemical characterization in alkaline media to assess catalytic activity and stability.

Main Results:

  • Achieved excellent oxygen evolution reaction (OER) activity, reaching 200 mA cm⁻² at ≈210 mV overpotential.
  • Demonstrated long-term operational stability at a high current density of 500 mA cm⁻².
  • Exhibited the narrowest overpotential window (ΔEORR-OER) of 0.69 V with significantly lower mass loading compared to benchmarks.

Conclusions:

  • The developed NiFe-MOF electrocatalyst shows superior bifunctional ORR/OER performance.
  • Strain modulation is an effective strategy for designing high-performance electrocatalysts for energy applications.
  • The material's efficiency and stability offer a promising advancement for electrolyzers and fuel cells.