Puro® MEA

Membrane Electrode Assembly

Membrane Electrode Assembly (MEA), are a crucial component in Proton Exchange Membrane Fuel Cells (PEFC).

The MEA is the heart of the fuel cell and facilitates the electrochemical reactions that convert fuel (hydrogen) into electricity.

The MEA typically consists of these main components

Cathode Electrode

The cathode electrode is located on the other side of the PEM and facilitates the reduction of oxygen from the air, which combines with protons to form water. The cathode catalyst also typically consists of platinum nanoparticles supported on carbon.

Proton Exchange Membrane (PEM)

The PEM is a thin, selective ion-conductive material that separates the anode and cathode compartments of the fuel cell. It allows protons (H+ ions) to pass through while blocking the passage of electrons. The PEM is essential for the proton transport, which is a critical step in the electrochemical reaction that takes place within the fuel cell.

Anode Electrode

The anode electrode is located on one side of the PEM and is responsible for catalyzing the oxidation of the fuel (hydrogen) to produce protons and electrons. The anode catalyst usually consists of a layer of platinum nanoparticles supported on carbon.

Gas Diffusion Layer (GDL)

The GDL is a crucial component in the MEA. It optimizes gas distribution, enable efficient reactant transport, promotes water management, and provides electrical conduction.