6.10 Hydrogen Fuel Cells
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9 Terms
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hydrogen fuel cells
operate like a battery, but reactants (hydrogen) are added continuously
* 2H2 + O2 → energy + 2H2O
* 2H2 + O2 → energy + 2H2O
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hydrogen supply
burn natural gas to extract hydrogen (co2 released)
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electrolysis
electric current splits water into hydrogen and oxygen
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new ways
photosynthetic algae/bacteria
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benefit
80% efficient
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benefit
no emissions
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drawback
how to obtain hydrogen without expending more energy than harnessing
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drawback
distribution network needs to be in place
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drawback
vehicles and tanks are more in danger of fire and explosions
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Flashcards (25)