Abstract
Chevrel phases, M x Mo 6 X 8 (M = metal intercalant, X = chalcogen), constitute a family of materials with composition-dependent physicochemical properties that have shown promising electrocatalytic activity for various small-molecule reduction reactions. The wide range of possible compositions among the Chevrel phase family offers the opportunity to tune the local and electronic structure of discrete Mo 6 X 8 cluster units within the extended M x Mo 6 X 8 framework. Thus, making them an ideal platform for studying structure–function relationships and generating design principles for improved electrocatalytic reactivity. This review summarizes the state of the art in experimental and computational evaluations of Chevrel phases as electrocatalysts for hydrogen evolution, CO 2 reduction, and nitrogen reduction reactions. We aim to elucidate the uncharted small-molecule electrochemical reactivity of Chevrel phases as a function of composition and consequently guide the design of promising multinary chalcogenides for energy conversion reactions.
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