The value of the applied Ubias between GE and CE determines the difference between CE and GE and therefore how much the potential distribution of the W-Cap is shifted. Because CE and GE are interconnected, the GE potential distribution follows the potential changes of the CE during the cycling of the W-Cap to maintain a constant potential difference between these electrodes. When a high Ubias voltage of -1 V is applied the WE potential reaches values of up to 1.34 V vs. Ag-wire leading to redox reactions visible in the CV curve (Figure ) at higher voltages potentially caused by electrolyte decomposition reactions.