The purpose of a fuel cell is to produce an electrical current that can be directed outside the cell to do work, such as powering an electric motor or illuminating a light bulb or a city.
Fuel cell markets have grown continuously in the 2000’s. 2008 was the record year, as the deliveries amounted to 18,000 units, 50 % up from the 2007 figure (12,000). Total sales of the fuel cell units amounted to c. 500 million $US (350 million €) in 2008.
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