Impact Electrochemistry of MoS₂: Electrocatalysis and Hydrogen Generation at Low Overpotentials.

ABSTRACT: MoS₂ materials have been extensively studied as hydrogen evolution reaction (HER) catalysts. In this study nanoparticulate MoS₂ is explored as a HER catalyst through impact voltammetry. The onset potential was found to be -0.10 V (vs RHE) at pH 2, which was confirmed to be due to HER by scale-up of the impact experiment to generate and collect a sufficient volume of the gas to enable its identification as hydrogen via gas chromatography. This is in contrast to electrodeposited MoS₂, which was found to be stable in pH 2 sulfuric acid solution with an onset potential of -0.29 V (vs RHE), in good agreement with literature. XPS was used to categorize the materials and confirm the chemical composition of both nanoparticles and electrodeposits, with XRD used to a

SUBMITTER: Manyepedza T 

PROVIDER: S-EPMC9619928 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature