More specifically, quantum electrochemistry is the application of quantum mechanical tools such as density functional theory to the study of electrochemical processes, including electron transfer at electrodes. It also includes models such as Marcus theory.

What two types of reaction happen at the electrodes?
Electrode reactions can be classified into two groups: one in which an electron transfer takes place across the electrode interface, such as ferric–ferrous redox reaction ( Fe aq 3+ + e = Fe aq 2+ ) ; and the other in which an ion transfer takes place across the electrode interface, such as iron dissolution–deposition ...