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PEM Fuel Cell Diagram A Fuel Cell is a device designed to convert the energy of a chemical reaction directly into electrical energy.
This electrochemical reaction occurs differently than other electrochemical power sources (EPS) like galvanic cells, primary and secondary batteries.
* With a fuel cell there is a constant supply of reactants that can be added to the device and a way to eliminate the products from the reaction.
*It does not depend on only the metals and oxides built into the unit.