✔ Faradic current relates to the electrochemical processes at the electrode-electrolyte interface. It is caused by electron transfer between the electrode and the electroactive material (redox reaction). It is also directly proportional to the scan rate. The kinetics, thermodynamics, and mechanism of the electrochemical processes are all explained in detail by faradic currents.
✔ The non-Fradaic process, also known as capacitance current, originates from an electrical double layer at the electrode-electrolyte surface. The capacitive current region indicates the motions of charge in an electrical double layer and there is no chemical reaction or electron transfer occurs there. It is directly proportional to the scan rate. It is also referred to as “background current”.
