Answer: Hydrogen works as an energy source through fuel cells. Hydrogen fuel cells are pretty complicated but the simplified version is that you have hydrogen and oxygen in the fuel cell which are separated by an electrolyte which you can think of as a sort of wall between the two chemicals (H and O). This wall gradually allows the hydrogen and oxygen to combine resulting in H2O or water. This is the “waste” byproduct. When this chemical reaction occurs electrical potential is created and then captured by bipolar plates in the fuel cell which is where the energy comes from in the form of electricity. The fuel cell simply needs more hydrogen and oxygen and it will continue to produce electricity.
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