Enhanced OER Performance and Dynamic Transition of Surface Reconstruction in LaNiO₃ Thin Films with Nanoparticles Decoration.

ABSTRACT: In an electrocatalytic process, the cognition of the active phase in a catalyst has been regarded as one of the most vital issues, which not only boosts the fundamental understanding of the reaction procedure but also guides the engineering and design for further promising catalysts. Here, based on the oxygen evolution reaction (OER), the stepwise evolution of the dominant active phase is demonstrated in the LaNiO₃ (LNO) catalyst once the single-crystal thin film is decorated by LNO nanoparticles. It is found that the OER performance can be dramatically improved by this decoration, and the catalytic current density at 1.65 V can be enhanced by ≈1000% via ≈10⁹ cm^-2 nanoparticle adhesion after extracting the contribution of surface enlargement. Most important

SUBMITTER: Liu H 

PROVIDER: S-EPMC10161029 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature