and therefore to control and analyze the W-Cap (channel 1) and the GE-CE system (channel 2) in parallel. In our typical experiments, the W-Cap is cycled using a CV experiment while a constant Ubias between GE and CE is applied via a CA experiment. To study the potential distribution of WE, CE, and GE the light red cables (REF1 of channel 1 and 2) are connected to the reference electrode (RE). The dark red cables of channel 1 and 2 are interconnected forming the new internal grounding of the system.