High Coverage Sub-Nano Iridium Cluster on Core-Shell Cobalt-Cerium Bimetallic Oxide for Highly Efficient Full-pH Water Splitting.

ABSTRACT: The construction of sub-nanometer cluster catalysts (<1 nm) with almost complete exposure of active atoms serves as a promising avenue for the simultaneous enhancement of atom utilization efficiency and specific activity. Herein, a core-shell cobalt-cerium bimetallic oxide protected by high coverage sub-nanometer Ir clusters (denoted as Ir cluster@CoO/CeO₂) is constructed by a confined in situ exsolution strategy. The distinctive core-shell structure endows Ir cluster@CoO/CeO₂ with enhanced intrinsic activity and high conductivity, facilitating efficient charge transfer and full-pH water splitting. The Ir cluster@CoO/CeO₂ achieves low overpotentials of 49/215, 52/390, and 54/243 mV at 10 mA cm^-2 for hydrogen evolution reaction/oxygen evolution re

SUBMITTER: Zhang L 

PROVIDER: S-EPMC11615758 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature