Cyclic voltammetry is a kind of electrochemical measurement. It is used for studying the redox properties of chemicals.
The three-electrode method is the most widely used because the potential of reference does not change easily during the measurement. This method needs a reference electrode, working electrode, and counterelectrode. Electrolyte is usually added to the compound solution to ensure sufficient conductivity. The combination of the solvent and the electrolyte determines the range of the potential. In this system, the potential is changed gradually and repeated like a sawtooth waveform as the potential measured between the reference electrode and the working electrode and the current measured between the working electrode and the counterelectrode are plotted. The potential is changed linearly and the scan rate can be changed, so compounds are oxidized and reduced reversibly on the electrodes. As a result, information about the redox potential and electrochemical reaction rates of the compounds are obtained.