Single Layer 2D Crystals for Electrochemical Applications of Ion Exchange Membranes and Hydrogen Evolution Catalysts

The isolation of graphene is considered as the beginning of a new generation of 2D materials and 2D crystals. Because of their particular layered structure, with planar topology and a thickness from single to few atomic layers, which provide them with unique properties, 2D material are expected to have important applications in the next generation of energy systems. Electrochemical energy storage devices such as batteries or supercapacitors have already incorporated these materials as electrodes, electrocatalysts, etc. However, most of the applications reported so far use graphene based materials such as graphene oxide (GO) or reduced graphene oxide (rGO), or different 2D materials in a bulk feature. This review aims to provide an overview of the recent progress in using single layer and few layer 2D materials in electrochemical applications of ion exchange membranes and hydrogen evolution catalysts and their efficacy in these systems.