High‐Resolution Electrochemical Mapping of the Hydrogen Evolution Reaction on Transition‐Metal Dichalcogenide Nanosheets

Nanoscale electrochemical cell: Understanding the hydrogen evolution reaction (HER) mechanism of MoS2 nanosheets requires a comprehensive understanding of the quantitative electrochemical properties and the distribution of active sites in real space. Scanning electrochemical cell microscopy (SECCM) is used to image and quantitatively analyze HER catalytically active sites in 1H MoS2 nanosheets.