Enhancement of the Hydrogen Evolution Reaction from Ni-MoS₂ Hybrid Nanoclusters.

ABSTRACT: This report focuses on a novel strategy for the preparation of transition metal-MoS₂ hybrid nanoclusters based on a one-step, dual-target magnetron sputtering, and gas condensation process demonstrated for Ni-MoS₂. Aberration-corrected STEM images coupled with EDX analysis confirms the presence of Ni and MoS₂ in the hybrid nanoclusters (average diameter = 5.0 nm, Mo:S ratio = 1:1.8 ± 0.1). The Ni-MoS₂ nanoclusters display a 100 mV shift in the hydrogen evolution reaction (HER) onset potential and an almost 3-fold increase in exchange current density compared with the undoped MoS₂ nanoclusters, the latter effect in agreement with reported DFT calculations. This activity is only reached after air exposure of the Ni-MoS₂ hybrid

SUBMITTER: Escalera-Lopez D 

PROVIDER: S-EPMC5089059 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature