Hydrogen is a vital component in fuel cells, where it acts as a fuel to generate electricity. In a typical proton-exchange membrane (PEM) fuel cell, hydrogen gas is oxidized at the anode, releasing electrons and protons. The electrons travel through an external circuit, providing electric power, while the protons pass through the membrane to the cathode, where they combine with oxygen to form water. Catalysts, often platinum-based, are essential for facilitating the oxidation and reduction reactions in fuel cells.
