Faraday’s law is next to the Nernst Equation the most important equation for electrochemistry. It describes the connection between the charge Q passing through a cell and the amount of substance n converted at the electrodes:
Equation 3.1 | Faraday’s Law
F is the Faraday constant and z the number of electrons needed per conversion.
In this section the reasons for the three electrode setup of most potentiostats is explained, what the task of each electrode is and what to take into consideration when choosing your counter electrode. What Is a Potentiostat Good for? A voltmeter does measure the potential difference between two points. To do so the circuit needs …
Understanding capacitive charging current is important for understanding electrochemical experiments, so in this section the origin and equations for capacitive charging current will be explained. Afterwards the effect of capacitive current during Cyclic Voltammetry and Linear Sweep Voltammetry is discussed. Usually electrochemists are interested in the Faraday current that is the current caused by an …