The models belong to a 3D-printed cyclic voltammetry cell that is based on a 50 mL laboratory glass bottle. The lid is inserted into an open GL32 laboratory glass bottle lid. The counter electrode (CE) is established by routing a coiled platinum wire through the holder. The working electrode consists of a 99.95% platinum plate (1 mm thickness, 9 mm^2 surface area) soldered to a platinum wire.