To monitor the electrochemical behavior of the catalyst and the overall reaction within the fuel cells, scientists often use strategies such as cyclic voltammetry (CV) to study the redox reactions and the electrochemical processes occurring at electrodes and the performance of the catalyst. First, CV works by linearly sweeping the working electrode's potential between two defined voltage limits. As the potential is swept, the current flowing through the working electrode will be measured. This current will then be recorded and created into a set of results that demonstrates the kinetics of the reaction and fuel cell. With the result gained, scientists can better understand the kinetics of ORR at the cathode as they examine the electrochemical behavior of catalysts at the electrode-electrolyte interface, where the measure of current is taking place during the process. By measuring the current response at different scan rates, scientists can tell the rate of charge transfer and other kinetic parameters that assess the catalyst's efficiency and the reaction's kinetics . Further, CV graphs can also be used to identify the change in the surface area of the catalysts as they undergo degradation.