| Fuel Cell Buses Technical Information by Georgetown University Advanced Vehicle Development (11/11/2000) Fuel cells produce electricity by electrochemically combining hydrogen and oxygen to form water. The hydrogen is broken down into its components (protons and electrons) at the anode. The protons pass through the electrolyte of the fuel cell. The electrons are forced to pass through an external circuit (the light bulb in the diagram), thereby supplying electrical power to external loads. On the Georgetown Fuel Cell Buses, the external loads are the propulsion and auxiliary systems. | ![](/icons/ecblank.gif) |
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