What is the primary function of an electrochemical cell?

The primary function of an electrochemical cell is to transform chemical energy into electrical energy. In an electrochemical cell, chemical reactions take place that involve the transfer of electrons, resulting in the generation of an electric current. This process occurs in batteries, where chemical substances react at the electrodes, producing electrical energy that can be harnessed to power devices.

In contrast, while some technologies do store electrical energy, such as capacitors or rechargeable batteries, the core objective of electrochemical cells is not energy storage but the conversion of chemical reactions into usable electrical energy. Measuring voltage is a separate function typically performed by voltmeters, rather than an inherent function of an electrochemical cell. Thus, the ability of electrochemical cells to convert chemical energy to electrical energy is central to their operation and widespread application in various technologies.