Efficient hydrogen evolution in transition metal dichalcogenides via a simple one-step hydrazine reaction.

ABSTRACT: Hydrogen evolution reaction is catalysed efficiently with precious metals, such as platinum; however, transition metal dichalcogenides have recently emerged as a promising class of materials for electrocatalysis, but these materials still have low activity and durability when compared with precious metals. Here we report a simple one-step scalable approach, where MoOx/MoS2 core-shell nanowires and molybdenum disulfide sheets are exposed to dilute aqueous hydrazine at room temperature, which results in marked improvement in electrocatalytic performance. The nanowires exhibit ∼100 mV improvement in overpotential following exposure to dilute hydrazine, while also showing a 10-fold increase in current density and a significant change in Tafel slope. In situ electrical, gate-dependent measureme

SUBMITTER: Cummins DR 

PROVIDER: S-EPMC4906413 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature