Adsorbed oxygen dynamics at forced convection interface in the oxygen evolution reaction.

ABSTRACT: The oxygen evolution reaction is a prevalent anodic reaction in electrocatalytic processes. Modulation of adsorbed oxygen (*O) at the electrochemical interface is an effective means to reduce the overpotential of the oxygen evolution reaction. However, the contribution of various *O conversions to the overpotential remains unclear. Herein, the development of a multi-component forced convection electrochemical mass spectrometry constructs *O-labeled electrochemical interfaces with specific coverages to track the *O conversions. The relationships between the Faradic contributions and the specific *O conversion pathways are established by considering the anomalous fractionation of molecule oxygen. Our experiments confirm that *O coupling contributes up to 48% with a specific overpotential on

SUBMITTER: Chen Z 

PROVIDER: S-EPMC12381231 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature