- noun a device that converts the chemical energy of a fuel and an oxidant to electrical energy
- A cell which converts chemical energy into electrical energy, and whose reactants are continuously replenished by external reservoirs. A phosphoric acid fuel cell, for instance, utilizes hydrogen and oxygen as the reactants, has carbon electrodes, a phosphoric acid electrolyte, and a platinum catalyst. The products of such a cell are electricity, heat, and water.
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