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12 cards from this deck
Electrochemical cell that continuously produces electricity from external fuel supply
Need external fuel vs batteries store energy internally
Hydrogen-oxygen fuel cell
2H2+O2→2H2O2H_2 + O_2 \rightarrow 2H_2O2H2+O2→2H2O
Oxidation of hydrogen gas
H2→2H++2e−H_2 \rightarrow 2H^+ + 2e^-H2→2H++2e−
Reduction of oxygen gas
Water (H2OH_2OH2O)
Only by-product is water (non-polluting)
Highly flammable & takes up more space than liquid fuels
Expensive & complex to produce, store & distribute hydrogen
Space Shuttle & International Space Station
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