Oxygen evolution reaction activity and underlying mechanism of perovskite electrocatalysts at different pH

Bae-Jung Kim, Emiliana Fabbri*, Mario Borlaf, Daniel F. Abbott, Ivano Eligio Castelli, Maarten Nachtegaal, Thomas Graule, Thomas J. Schmidt

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

4 Downloads (Pure)

Abstract

The members of the perovskite oxide family have been vastly explored for their potential as active electrocatalysts for an efficient anodic reaction (i.e. the oxygen evolution reaction, OER) of the water splitting process. Therefore, restless effort has been invested in the development of perovskite oxides as efficient OER catalysts, while the OER mechanism is still in veil. The rational development of perovskite catalysts for practical water electrolysis is left on hold until the full comprehension of the underlying mechanism is established under real operation conditions. Up to date, primarily two different OER mechanisms – conventional and lattice oxygen evolution – have been conjectured where the former follows a reversible route while the latter leads to irreversible changes. In this present study, we present evidence which suggests that perovskite catalysts follow both mechanisms concomitantly while one is preferentially selected based on their thermodynamic and kinetic natures dependent on pH.
Original languageEnglish
JournalMaterials Advances
Volume2
Issue number1
Pages (from-to)345-355
ISSN2633-5409
DOIs
Publication statusPublished - 2021

Fingerprint Dive into the research topics of 'Oxygen evolution reaction activity and underlying mechanism of perovskite electrocatalysts at different pH'. Together they form a unique fingerprint.

Cite this