Article 2018

Oxygen reduction on platinum single crystal electrodes

Authors

Gómez-Marín, A. M.

Feliu, J. M.

Encyclopedia of Interfacial Chemistry Surface Science and Electrochemistry , pp. 820-830

DOI: 10.1016/B978-0-12-409547-2.13333-5

Citations

Authors

Abstract

© 2018 Elsevier Inc. All rights reserved.The oxygen reduction reaction (ORR) is one of the fundamental reactions in electrochemistry. Unfortunately, despite many years of research, the exact ORR mechanism is still unknown. In this work, a short revision of the ORR on platinum single crystals is summarized, including the effect of strongly adsorbing electrolytes and the water structure near the electrode surface on the ORR activity. Recent information from scan rate studies at stationary and rotating disk electrodes, suggesting the possible existence of a soluble intermediate species close to the reaction onset on Pt(111) is presented. In addition, the possible role of adsorbed hydroxyl, OHads; adsorbed oxygen, Oads; and Pt-oxides in the reaction dynamics is also discussed.

Keywords

Cottrell equation Electrochemical oxygenated species Hydrogen peroxide Hydroperoxyl radical Interfacial water structure Intermediate species Oxygen reduction reaction Platinum electrode Rotating disk electrode Scan rate voltammetric analysis Single crystals Stepped surfaces Surface oxides

Chemistry (all) (CHEM)

Ana M. Gómez-Marín

: Scopus

Last Update: 2026-06-25

: 2-s2.0-85062432801

PII: B9780124095472133335