Potassium electrochemical optimization of the MoS2 catalytic hydrogen evolution reaction performance

Abstract

This study presents a flexible self-supporting C@MoS_x@pCNF electrode, prepared via potassium electrochemical intercalation, which fragments MoS₂ into smaller, amorphous nanoparticles. The amorphous MoS_x shows enhanced active sites and superior hydrophilic/aerophobic properties. The electrode demonstrates excellent HER performance with a low overpotential of 51 mV at 10 mA cm⁻² and a Tafel slope of 77 mV dec⁻¹, offering a new strategy for improving MoS₂ catalysis.