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Ferrocene-Based Metal-Organic Framework Nanosheets as a Robust Oxygen Evolution Catalyst.

Jing Liang1, Xutao Gao2, Biao Guo1

  • 1State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116024, Dalian, P. R. China.

Angewandte Chemie (International Ed. in English)
|March 26, 2021
PubMed
Summary

We synthesized novel two-dimensional metal-organic frameworks on nickel foam for superior oxygen evolution reactions. Ferrocene units enhance electron transfer, improving catalytic performance in alkaline conditions.

Keywords:
electrocatalystsferrocenemetal-organic frameworksoxygen evolution reaction

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Developing efficient electrocatalysts is crucial for energy conversion technologies.
  • Metal-organic frameworks (MOFs) offer tunable structures for catalytic applications.
  • Oxygen evolution reaction (OER) is a key process in water splitting and metal-air batteries.

Purpose of the Study:

  • To synthesize and characterize novel two-dimensional MOFs on nickel foam for OER.
  • To investigate the role of ferrocene units in enhancing OER performance.
  • To compare the catalytic activity with state-of-the-art materials.

Main Methods:

  • Hydrothermal synthesis of NiFc-MOF on nickel foam.
  • Electrochemical characterization including OER performance testing.
  • Density functional theory (DFT) calculations for mechanistic insights.

Main Results:

  • Successfully synthesized two-dimensional NiFc-MOF/NF with superior OER activity.
  • Achieved low overpotentials of 195 mV at 10 mA/cm² and 241 mV at 100 mA/cm².
  • Ferrocene units identified as key electron transfer intermediates, lowering theoretical overpotential.

Conclusions:

  • NiFc-MOF/NF demonstrates excellent OER performance in alkaline media.
  • The integrated ferrocene units significantly boost electron transfer capacity.
  • This MOF material shows potential as an efficient electrocatalyst for OER.