In situ fabrication of porous MoS_2 thin-films as high-performance catalysts for electrochemical hydrogen evolution

摘要

Amorphous MoS_2 porous thin films (denoted as MoS_2 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.