Renewable Fuel Cells

Hydrogen Fuel Cell

Hydrogen is a versatile energy carrier that can be used to power nearly every end-use energy need. The fuel cell - an energy conversion device that can efficiently capture and use the power of hydrogen - is the key to making it happen.

A single fuel cell consists of an electrolyte sandwiched between two electrodes, an anode and a cathode. Bipolar plates on either side of the cell help distribute gases and serve as current collectors. In a Polymer Electrolyte Membrane (PEM) fuel cell, which is widely regarded as the most promising for light-duty transportation, hydrogen gas flows through channels to the anode, where a catalyst causes the hydrogen molecules to separate into protons and electrons. The membrane allows only the protons to pass through it. While the protons are conducted through the membrane to the other side of the cell, the stream of negatively-charged electrons follows an external circuit to the cathode.
This flow of electrons is electricity that can be used to do work, such as power a motor.

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