Sandia National Laboratories researchers may have developed the key to making hydrogen cars a commercial reality.
A major roadblock in the development of hydrogen cars has been the lack of a reliable hydrogen fuel cell that works well in both dry and humid environments. Hydrogen fuel cells are electrochemical engines that come in several different varieties with the most common being the polymer electrolyte membrane (PEM) fuel cell. PEM fuel cells use oxygen from the air and pressurized hydrogen to create electricity, heat and water (steam) as byproducts. The electricity powers the electric motor that turns the wheels of the car.
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