Cyclic Voltammetry Part 1: Fundamentals

“Cyclic voltammetry” is one of the most common electrochemical techniques, not only for electrochemists but also for researchers in other fields. However, the principles of cyclic voltammetry are very complex; beginners and even experts may struggle with their application. Therefore, we explain the fundamental principles in Part 1 and introduce the practical issues associated with recent trends such as fuel cells, capacitors, and sensors in Part 2. In this comprehensive paper, we focus on the electrochemical reversibility in cyclic voltammograms classified as reversible, quasi-reversible, and irreversible processes, which are useful for obtaining information on the reaction rates of electrodes. We also explain the relevant basic principles, experimental setup, and ideas of background current.