Fuel Cell

external image fuel_cell_still.gif

52% efficiency

The improvements made to the fuel cell is they now use less metal than used before. They can now also use fuel cells in water since a fuel cell needs oxygen and hydrogen to work.

A fuel cell works by hydrogen pumped into one side of the cell and air flowing through the other. Inside of the fuel cell the hydrogens are made into postively charged ions and are attracted to the oxygen atom. After the positive hydrogen atoms connect themselves to the oxygen the negativly charged hydrogen atoms go along conducter of electrcity and hooked up to a lightbulb or whatever you want to have electricity for and powers that and goes through a circuit.

The fuel cell is used in electrical cars today and is hopefully planned on being used worldwide for multiple things
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www.howstuffworks.com/fuel-cell