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Energy Resources

Fuel Cells
How a Generator Works | Fossil Fuels | Fuel Cells | Solar Energy | Wind energy | Hydroelectric | Nuclear Energy | Work cited

How they work.

Fuel cells work like a battery.  There are two electrodes in a fuel cell. Oxygen passes over one, and hydrogen passes over the other.  This creates electricity, water, and heat.  


Hydrogen is fed into the anode, and oxygen goes into the cathode. The hydrogen atom splits into an electron and proton, and they both go on separate paths to a cathode.  The proton goes through an electrolyte.  The electron produces a separate current, and meets up with the proton in the cathode.  When they get to the cathode they turn back into hydrogen, and mix with the oxygen.  When the mix you get H2O or water.  This is a cell, and they produce a small voltage.  They get arranged with other fuel cells, and create enough electricity to power an object.

Pros of Fuel Cells
    • Fuel Cells do not create carbon dioxide like fossil fuels. 
    • Do not require large power grids.
    • Can be used with renewable sources of energy.

Cons of Fuel Cells

    • Fuel cells require a source of energy such as natural gas.  This still requires fossil fuels. 
    • Expensive compared to other methods.
    • They need time to warm up and pressure for operation. 



How Fuel Cells Work