PEM (Proton Exchange Membrane)

A Proton Exchange Membrane (PEM) is a specialized material used in hydrogen fuel cells to generate electricity. It acts as a separator that allows protons (positively charged hydrogen ions) to pass through while blocking electrons and gases like oxygen and hydrogen. This process enables the fuel cell to produce electricity efficiently, with water as the only byproduct. PEMs are typically made of a polymer material that conducts protons well and is durable under operational conditions, playing a crucial role in clean energy technologies by enabling safe and efficient hydrogen fuel use.