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AP Enviro



Unit 6

6.11 Hydrogen Fuel Cell

1 min readmay 29, 2020


Karla Jauregui Sandoval

AP Environmental Science ♻️

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Hydrogen Fuel Cells are powered by sunlight, hydrogen and oxygen. To rejoin the broken hydrogen and oxygen, a fuel cell pushes electrons through the circuit to carry energy through the circuit to the motor. Hydrogen reacts with the oxygen to produce water and also energy in the hydrogen fuel cell. 
Hydrogen fuel cells come from water and are stored and used to generate electricity. 
Fuel cell cars would work by using the hydrogen to power the motor and start. This is a greener alternative to gas fueled cars because hydrogen fuel celled cars only emit water vapor and heat instead of carbon monoxide and nitrogen oxides. 

Diagram Courtesy to US Department of Energy      

Benefits and Drawbacks

Benefits 👍🏻
Drawbacks 👎🏻
  • Clean emissions - water vapor 
  • Renewable - hydrogen is abundant 
  • Higher efficiency 
  • Expensive 
  • Construction of fuel cell releases pollutants 
  • Difficult to store 


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