PEMfuel
PEMfuel is a term used to describe proton exchange membrane fuel cell (PEMFC) technology, in which a solid polymer electrolyte conducts protons between the anode and cathode. In a PEM fuel cell, hydrogen is supplied to the anode and air to the cathode. At the anode, catalysts split hydrogen into protons and electrons; the protons move through the membrane to the cathode while the electrons travel through an external circuit, generating electricity. At the cathode, protons, electrons, and oxygen form water and heat.
Materials include a proton-conducting membrane (commonly Nafion or other perfluorosulfonic acid polymers), carbon-based gas diffusion layers,
PEMfuel systems offer high power density and low emissions. Electrical efficiencies generally range from 40% to
Applications include transportation (fuel cell electric vehicles), stationary power generation, backup power, and portable devices. Key
See also: Proton exchange membrane, Fuel cell, Hydrogen economy.