2D Transition Metal Dichalcogenides-Based Electrocatalysts for Hydrogen Evolution Reaction

摘要

Hydrogen is an efficient, clean, and economical energy source, owing to itshuge energy density. Electrochemical water splitting is a potential candidate forinexpensive and eco-friendly hydrogen production. Recently, the developmentof 2D transition metal chalcogenides (TMDs) nanomaterials with a variety ofphysicochemical properties has shown their potential as eminent non-noblemetal-based nanoscale electrocatalysts for hydrogen evolution. Nanostructuringsuch materials induces deep modification of their functionalities, compared totheir bulk counterparts. High density of different types of exposed active sitesis formed, and the small diffusion paths, which enhances the electron transferin the 2D structures, can successfully aid the charge collection process in theelectrocatalytic hydrogen evolution reactions. In this review, the key parametersto improve the catalyst performance of 2D TMDs in electrochemical hydrogenevolution reaction (HER) processes are discussed in detail and the most recentdevelopments in the field are summarized, focusing on the improvement of theelectrocatalytic activity of 2D TMDs. This review delivers deep insight for theclear understanding of the potential of 2D TMDs nanoscale materials as electrocatalystsfor HER, suggesting the development of new type of catalyst withefficient activity in HER as well as other renewable energy fields.