What type of reactions does electrochemistry study?

Electrochemistry primarily investigates reactions that occur at the interface between an electron conductor (such as a metal) and an ionic conductor (such as an electrolyte solution). This is crucial because electrochemical reactions involve the transfer of electrons between these conductors.

At the interface, oxidation and reduction reactions take place, allowing for the flow of electric current. For example, in an electrochemical cell, oxidation occurs at the anode where electrons are released, while reduction takes place at the cathode where electrons are accepted. This interplay at the junction of different phases is essential for the functioning of batteries, fuel cells, and various electrochemical sensors.

Understanding this concept is vital because it highlights how electrochemical processes convert chemical energy into electrical energy and vice versa, which is fundamental to many practical applications, including energy storage and conversion technologies.