In our setup, electrodes were fabricated through screen-printing to ensure reproducible dimensions and alignment on a predefined grid. This method effectively decouples the electrodes from the electrolyte spreading area, thereby minimizing cross- contamination risks associated with electrolyte dispersion on the substrate. Additionally, this technique significantly reduces waste of active material. Unlike other coating methods such as doctor blading, which produce cut-out waste, screen-printing only coats the specific spots required for measurements.