Ion dynamics and charging phenomena at interfaces play a key role in any ion-based system . Pulsed or stepped potential techniques provide a method to investigate and make use of the time-dependent behavior of the interface, for example to study charge carrier dynamics , electrochemical depostion , or nanopore charging . Combining potential pulsing with nanoscale electrodes has become an exciting approach in recent years to study localized charging phenomena of the solid-liquid interface, which has shown great potential with regards to the understanding and control of charge dynamics at solidliquid interfaces . For instance, potential pulsing at scanning nano-electrodes has been used to locally probe and image ion distributions in the electrical double layer (EDL) that forms in solution at the solid-liquid interface with an electrode substrate .