articleACS CatalysisJul 23, 2012Closed access

Electrocatalytic Oxygen Evolution Reaction (OER) on Ru, Ir, and Pt Catalysts: A Comparative Study of Nanoparticles and Bulk Materials

Technische Universität Berlin

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Abstract

A comparative investigation was performed to examine the intrinsic catalytic activity and durability of carbon supported Ru, Ir, and Pt nanoparticles and corresponding bulk materials for the electrocatalytic oxygen evolution reaction (OER). The electrochemical surface characteristics of nanoparticles and bulk materials were studied by surface-sensitive cyclic voltammetry. Although basically similar voltammetric features were observed for nanoparticles and bulk materials of each metal, some differences were uncovered highlighting the changes in oxidation chemistry. On the basis of the electrochemical results, we demonstrated that Ru nanoparticles show lower passivation potentials compared to bulk Ru material.…

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Authors

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Topics & keywords

Keywords
  • Oxygen evolution
  • Nanoparticle
  • Catalysis
  • Materials science
  • Electrochemistry
  • Electrocatalyst
  • Chemical engineering
  • Passivation
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