The key to uniform electrochemical polymerization at electrodes is identifying suitable reaction conditions, mainly controlling the operating potential. The potential must be high enough to initiate polymerization on the electrode but not too high to trigger overoxidation or the formation of secondary degradation products . The electrochemical synthesis of PN and its composites is particularly elegant, as the oxidation potential can be finely adjusted, and the reaction can be switched off directly after a defined time. This is challinging to achieve with chemical oxidation.