A fuel cell is an electrochemical
device that combines hydrogen fuel and oxygen from the air to produce
electricity, heat and water. Fuel cells operate without combustion, so they are
virtually pollution-free. Since the fuel is converted directly to electricity
and heat, a fuel cell's total system efficiency can be much higher than
internal combustion engines, extracting more energy from the same amount of
fuel. The fuel cell itself has no moving parts — making it a quiet and reliable
source of power.
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