has been used as a reference (separated from the working electrode in a different compartment via a salt-bridge) and a graphite rod has been used as a counter electrode. In order to prevent evaporation of the electrolyte due to prolonged ADTs at the high temperature (60 °C), in addition to the condenser, the other open parts of the HT-DE cell (the capillary for the counter electrode, the capillary for the salt bridge and the beaker for the reference electrode) have been covered by the in-house designed PEEK caps.