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Related Experiment Videos

A Dendritic Nanostructured Copper Oxide Electrocatalyst for the Oxygen Evolution Reaction.

Tran Ngoc Huan1, Gwenaëlle Rousse2,3, Sandrine Zanna4

  • 1Laboratoire de Chimie des Processus Biologiques, CNRS UMR 8229, Collège de France, UPMC Univ Paris 06, 11 Place Marcelin Berthelot, 75231, Paris Cedex 05, France.

Angewandte Chemie (International Ed. in English)
|April 5, 2017
PubMed
Summary

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This study presents a novel copper/copper oxide electrocatalyst for efficient oxygen evolution reaction (OER). The nanostructured catalyst demonstrates high activity and selectivity for water oxidation, crucial for electrocatalytic devices.

Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • Water oxidation is essential for electrocatalytic devices using water as an electron source.
  • Efficient catalysts are needed for the oxygen evolution reaction (OER), ideally using earth-abundant metals.
  • Copper-based catalysts show promise but are less explored than Co, Mn, or Ni for OER.

Purpose of the Study:

  • To develop and characterize a nanostructured copper/copper oxide electrocatalyst for selective water oxidation.
  • To evaluate the catalytic performance of the copper-based material for the oxygen evolution reaction.

Main Methods:

  • Fabrication of a nanostructured copper/copper oxide electrode.
  • Passivation of conductive copper foam with a copper oxide layer.
Keywords:
copper oxideelectrocatalysiselectrodepositionporous electrodewater oxidation

Related Experiment Videos

  • Nanostructuring via electrodeposition of copper oxide nanoparticles.
  • Electrochemical testing in 1 M NaOH solution.

    • Main Results:

    • The copper/copper oxide electrocatalyst exhibited high efficiency for water oxidation to dioxygen.
    • Achieved an overpotential of 290 mV at a current density of 10 mA cm⁻².
    • Demonstrated good selectivity for the oxygen evolution reaction.

    Conclusions:

    • The rationally designed nanostructured copper/copper oxide material is a highly efficient electrocatalyst for OER.
    • This copper-based catalyst offers a promising alternative for water oxidation in electrocatalytic applications.
    • The study highlights the potential of copper in developing advanced OER catalysts.