Enhanced photoelectrochemical performance of defect-rich ReS2 nanosheets in visible-light assisted hydrogen generation

Ion-vacancy defects induced by visible-light irradiation are demonstrated both experimentally and theoretically as active sites for enhanced hydrogen generation of ReS2 nanosheets. The activated electrode shows the significant current density of 10 mA cm−2 at remarkably low overpotential of 116 mV, which is as far as we know the best ReS2 electrocatalyst reported to date.355