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THE BALLARD FUEL CELL

The Ballard fuel cell is a power generating device which combines hydrogen (which can be obtained from methanol, natural gas, petroleum) and oxygen without the use of combustion in order to generate electricity. Since fuel cells operate very quietly and efficiently and their only emissions are pure water and heat they are expected to be the future of power generating machines.

The PEM fuel cell is made of two plates with a plastic membrane coated with a catalyst in the middle. Hydrogen is then fed through the channels on one side of the plates and oxygen is fed through the other side. The hydrogen and oxygen atoms are drawn toward each other. Only one part of the hydrogen atom – the proton – can pass through the membrane. The electron has to take the long way around through an external circuit. This creates electricity. The oxygen side attracts protons and electrons that have traveled through the external circuit. This is where the byproducts......

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Approximate Word Count: 394
Approximate Pages: 2 (250 words per double-spaced page)

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