Industry jargon

PEM fuel cell

Also called: proton-exchange membrane fuel cell, polymer electrolyte membrane fuel cell A PEM fuel cell uses a proton-conducting polymer membrane as its electrolyte. Hydrogen is supplied to the anode and oxygen from air to the cathode, producing electricity, heat and water through the electrochemical reaction. PEM fuel cells operate at relatively low temperatures compared with several other fuel-cell types and can respond quickly to changing load. Those characteristics make PEM systems the main fuel-cell technology used in hydrogen road vehicles.