Comparable oxidative and reductive ECG scans of uncoated Pt interdigitated electrodes measured in 0.1 M n-Bu4NPF6/CH3CN can be found in the supporting information in Figure . Our comprehensive (spectro-)electrochemical analysis of colloidal 2H-MoS2 nanosheets with a thickness of 1-2 layers and a lateral size of 20-25 nm affords the electronic structure shown in Figure . To approximate the corresponding energy values with respect to the vacuum level, the reference value for the ferrocene/ferrocenium redox couple needs to be subtracted from the reported potentials. While different suggestions for this reference level exist, we recommend the widely used value of -5.1 eV.