Ultrafine Fe1Pt3 nanoalloys on MoS2 nanosheets for robust hydrogen evolution reaction

In this study, Fe 1 Pt 3 nanoparticles are dispersed on MoS 2 nanosheets to integrate the fascinating features of noble metal with highly exposed nanosheets. The MoS 2 nanosheets supply good support for the uniform dispersion and easily accessibility of Fe 1 Pt 3 nanoalloys, and ultrafine Fe 1 Pt 3 nanoparticles provide a large number of active sites and enhanced catalysis/charge kinetics. The Fe 1 Pt 3 -MoS 2 catalyst exhibits good hydrogen evolution performances in acidic media with low overpotential of 59 mV at current density of 10 mA cm −2 and robust catalysis kinetics (Tafel slope of 38 mV dec −1 ), making it high-efficiency HER catalyst with low Pt loading.