Electrochemistry is the study of electricity and how it relates to chemical reactions. In electrochemistry, electricity can be generated by transfer of electrons from one element to another in a reaction.
Electrical and chemical transport properties are measured with various methods. Most electrochemical work with an electrochemical cell is achieved using what is called a potentiostat. A potentiostat is an electronic device that controls the voltage difference between a working electrode and a reference electrode. Both electrodes are contained in an electrochemical cell. The potentiostat implements this control by injecting current into the cell through an auxiliary electrode.