Hydrogen fuel cell cars is a vehicle that uses hydrogen as its on-board fuel for motive power. The concept is the same like traditional gasoline (petrol) cars which the hydrogen is burned in engines and reacted with oxygen to produce water and electricitywhich is used to power an electric traction motor.
Hydrogen fuel cell cars contain molecular hydrogen needed as an on-board fuel for hydrogen vehicles can be obtained through many thermochemical methods utilizing natural gas, coal (by a process known as coal gasification), liquefied petroleum gas, biomass (biomass gasification), by a process called thermolysis, or as a microbial waste product called biohydrogen or Biological hydrogen production. Hydrogen can also be produced from water by electrolysis. If the electricity used for the electrolysis is produced using renewable energy, the production of the hydrogen would (in principle) result in no net carbon dioxide emissions. On-board decomposition to produce hydrogen can occur when a catalyst is used.
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