Some reflections on the understanding of the oxygen reduction reaction at Pt(111)

• Ana M. Gómez-Marín,
• Ruben Rizo and
• Juan M. Feliu

Beilstein J. Nanotechnol. 2013, 4, 956–967, doi:10.3762/bjnano.4.108

• electrocatalysts for fuel-cell cathodes is only possible through a cooperative approach between theory and experiments. Keywords: hydrogen peroxide oxidation; hydrogen peroxide reduction; oxygen reduction; Pt(111); stepped surfaces; Introduction Nowadays, the oxygen reduction reaction (ORR) is arguably one of

• , which are widely used as ORR catalyst in polymer electrolyte membrane fuel cells [11][12][13]. In addition, the role of the adsorbed oxygen-containing species and the possible relevance of the hydrogen peroxide oxidation and reduction reactions (HPORR) in the ORR mechanism are discussed. This is done

• the goal in electrocatalysis. Hydrogen peroxide oxidation and reduction reactions (HPORR) in the ORR From theoretical calculations, the single soluble intermediate species that could participate in the ORR mechanism is H2O2. However, as discussed above, H2O2 is a stable intermediate in ORR only under