Abstract

Hydrogen (H 2 ) is considered to be a promising substitute for fossil fuels. Two-dimensional (2D) nanomaterials have exhibited an efficient electrocatalytic capacity to catalyze hydrogen evolution reaction (HER). Particularly, phase engineering of 2D nanomaterials is opening a novel research direction to endow 2D nanostructures with fascinating properties for deep applications in catalyzing HER. In this review, we briefly summarize the research progress and present the current challenges on phase engineering of 2D nanomaterials for their applications in electrocatalytic HER. Our summary will be of significance to provide fundamental understanding for designing novel 2D nanomaterials with unconventional phases to electrochemically catalyze HER. This review briefly summarizes the advances on the phase engineering of 2D nanomaterials (transition metal dichalcogenides, metal thiophosphates, and 2D noble metal nanomaterials) and their applications in electrocatalytic hydrogen evolution reaction.

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