Concept:A fuel cell continuously converts the chemical energy of a fuel and an oxidizing agent directly into electricity, without combustion.
Solution:- The most prevalent, highly efficient, and historically significant type of fuel cell (used extensively in aerospace missions like Apollo) is the Alkaline Fuel Cell (AFC).
- This specific cell operates on the continuous redox reaction between Hydrogen gas (the fuel, oxidized at the anode) and Oxygen gas (the oxidant, reduced at the cathode).
- The only exhaust byproduct is pure water.
Why other options are incorrect:While methane can be used in Solid Oxide Fuel Cells, basic textbook fuel cells fundamentally teach the Hydrogen-Oxygen reaction. Copper and Nitrogen are not standard fuel cell reagents.
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