Coupling MoS 2 nanosheets with CeO 2 for efficient electrocatalytic hydrogen evolution at large current densities.

We developed an efficient MoS nanosheet electrode coupled with CeO a hydrothermal process to facilitate water adsorption and dissociation, which displayed good HER activity and stability at a large current density of 500 mA cm. Raman spectroscopy confirmed the formation of hydroxide ions based on the strengthening of the Ce-O bond during the HER.