Before film preparation, both substrates used for ECG and EMAS were cleaned as follows: Pt interdigitated electrodes (IDE) with a gap width of 5 µm (Metrohm G-IDEPT5) were rinsed several times with H2O and MeOH. Fluorine doped tin oxide (FTO) coated glass (Solaronix TCO22-15) was sonicated for 15 min each in acetone, hexane, 10% solution of Extran MA01 (Merck) and H2O. From here on, both substrates were treated identically. To ensure good contacting of the substrate, not the entire substrate surfaces were coated, but mainly the part that is in contact with the electrolyte later on. (3-mercaptopropyl) trimethoxysilane (MPTMS) treatment was performed by placing the substrates in a stirred 3% MPTMS toluene solution at 50°C for 90 min followed by rinsing with toluene. Afterwards, the substrates are placed in a 4 mM 2H-MoS2 nanosheet solution in hexane for 22 h, which was sonicated for 15 min beforehand. Film preparation happens by precipitation of the long term unstable colloidal solution. For the thinner EMAS samples the film preparation times were 30 min, 5 min and 30 s.