Direct evidence of boosted oxygen evolution over perovskite by enhanced lattice oxygen participation.

ABSTRACT: The development of oxygen evolution reaction (OER) electrocatalysts remains a major challenge that requires significant advances in both mechanistic understanding and material design. Recent studies show that oxygen from the perovskite oxide lattice could participate in the OER via a lattice oxygen-mediated mechanism, providing possibilities for the development of alternative electrocatalysts that could overcome the scaling relations-induced limitations found in conventional catalysts utilizing the adsorbate evolution mechanism. Here we distinguish the extent to which the participation of lattice oxygen can contribute to the OER through the rational design of a model system of silicon-incorporated strontium cobaltite perovskite electrocatalysts with similar surface transition metal propert

SUBMITTER: Pan Y 

PROVIDER: S-EPMC7181763 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature