Electrode Preparation and Surface Area Determination

Two sizes of copper electrodes (i.e., 0.3 cm × 0.2 cm × 0.05 cm, and 1.0 cm × 1.0 × cm × 0.05 cm) were used. From the market, a large copper sheet of thickness 0.05 cm was purchased. From this copper sheet, copper electrodes of the required dimensions were cut and used. Two sizes of brass electrodes (i.e., 0.3 cm × 0.2 cm × 0.05 cm, and 1.0 cm × 1.0 × cm × 0.05 cm) were also used. Similarly, from the market, a large brass sheet of thickness 0.05 cm was purchased. From this brass sheet, brass electrodes of the required dimensions were cut and used. Similarly, the platinum electrode was also prepared. Further, in this research, the combined surface area of all six faces of an electrode was assumed to be the active surface area of the electrodes. For electrodes of 0.3 cm × 0.2 cm × 0.05 cm and 1.0 cm × 1.0 × cm × 0.05 cm dimensions, the active electrode area was considered as 0.17 cm² and 2.2 cm², respectively.