Fuel cells are electro-chemical conversion devices used to generate electricity, that are widely regarded as a zero emission alternative to fossil fuel powered engines.
Fuel cells contain an electrolyte that sparks a chemical reaction when fuel such as hydrogen and oxidants such as oxygen flow into it. The reaction generates heat and electricity while only emitting water vapour. If the reactants are continuously replenished, the electro-chemical conversion process will also be continuous.
Fuel cells are currently used to drive vehicles and provide off-grid power supplies and back-up power. They are seen as a green technology that can significantly improve air quality and reduce carbon emissions.
However, the widespread adoption of fuel cells is currently hampered by the need to identify cost effective and environmentally sustainable means of producing and distributing hydrogen.
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