Identification of Interface Structure for a Topological CoS₂ Single Crystal in Oxygen Evolution Reaction with High Intrinsic Reactivity.

ABSTRACT: Transition metal chalcogenides such as CoS₂ have been reported as competitive catalysts for oxygen evolution reaction. It has been well confirmed that surface modification is inevitable in such a process, with the formation of different re-constructed oxide layers. However, which oxide species should be responsible for the optimized catalytic efficiencies and the detailed interface structure between the modified layer and precatalyst remain controversial. Here, a topological CoS₂ single crystal with a well-defined exposed surface is used as a model catalyst, which makes the direct investigation of the interface structure possible. Cross-sectional transmission electron microscopy of the sample reveals the formation of a 2 nm thickness Co₃O₄ layer

SUBMITTER: Kang Y 

PROVIDER: S-EPMC9073842 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature