What Is Electrochemistry?
An
electrochemical
process is one that either converts electrical energy to chemical energy or converts chemical energy to electrical energy.
In electrochemical reactions, chemicals react by gaining or losing electrons. Chemicals can exchange these electrons with an electrical conductor or circuit. The chemical potential — or thermodynamic driving force — for a chemical reaction is thus converted into an electrical potential or voltage, which can be exploited to do useful work when electrical current is drawn.