Proton Exchange Membrane(PEM) electrolysis is the electrolysis of water in a cell equipped with a Solid Polymer Electrolyte(SPE) that is responsible for the conduction of protons, separation of product gases, and electrical insulation of the electrodes.

Hydrogen water, also known as hydrogen-rich water or hydrogenated water, is regular water that has molecular hydrogen gas (H2) added to it.

Catalyst Coated Membrane (CCM) serves as the central component in PEM electrolyzers, playing a vital role in the electrochemical reactions that split water into hydrogen and oxygen gases.