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:: Environment > The HyRoad > What Is A Fuel Cell?

	A fuel cell is a compact electrical generator that uses an electrochemical reaction to produce electricity. Unlike a battery, a fuel cell never needs recharging. It continues to produce electricity as long as it is supplied by two of earth's most common elements - oxygen and hydrogen. Source: U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy

How it Works

When hydrogen and oxygen combine, they create water and electricity. In a fuel cell, the protons from hydrogen pass through a membrane to the other side of the cell. The electrons from the hydrogen can't pass through the membrane, so they reach the other side of the cell through a circuit, producing electricity. The protons, electrons and oxygen from the air then combine to form water.

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Incorporating Hybrid Technology

The hydrogen fuel cell bus uses an electric motor, powered by both fuel cells and a battery bank, charged in part by regenerative braking. The combination gives the bus the power to climb hills effortlessly and to accelerate quickly-all with a smooth, quiet ride.

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