In situ fabrication of porous MoS2 thin-films as high-performance catalysts for electrochemical hydrogen evolution†
Abstract
Amorphous MoS2 porous thin films (denoted as MoS2 PTFs) with high activity towards hydrogen evolution reaction (HER) were fabricated by in situ sulfuration of a Mo substrate. A small overpotential (∼120 mV) and a low Tafel slope (∼41 mV dec−1) can be observed and their excellent performance was ascribed to the combination of the amorphous feature, porous structure and optimized thickness.