Back to AI Flashcard MakerChemistry /Chemistry: Electrode Potentials Part 5
Fuel cells: what flows into the fuel cell and what flows out
Fuel and oxygen flow into fuel cell and products flow out
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Key Terms
Term
Definition
Fuel cells: what flows into the fuel cell and what flows out
Fuel and oxygen flow into fuel cell and products flow out
Fuel cells: what remains in the cell
The electrolyte
Fuel cells: what can fuel cells operate continuously depending on
Provided the fuel and oxygen are supplied into cell
Fuel cells: do fuel cells have to be recharged
No
The alkaline hydrogen oxygen fuel cell: what are the cells two electrodes made out of
Porous Pt based material
The alkaline hydrogen oxygen fuel cell: what are the two electrodes separated by
A semi permeable membrane
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| Term | Definition |
|---|---|
Fuel cells: what flows into the fuel cell and what flows out | Fuel and oxygen flow into fuel cell and products flow out |
Fuel cells: what remains in the cell | The electrolyte |
Fuel cells: what can fuel cells operate continuously depending on | Provided the fuel and oxygen are supplied into cell |
Fuel cells: do fuel cells have to be recharged | No |
The alkaline hydrogen oxygen fuel cell: what are the cells two electrodes made out of | Porous Pt based material |
The alkaline hydrogen oxygen fuel cell: what are the two electrodes separated by | A semi permeable membrane |
The alkaline hydrogen oxygen fuel cell: what is the electrolyte | Sodium hydroxide solution |
The alkaline hydrogen oxygen fuel cell: which reaction takes place when hydrogen enters at the negative electrode | H2 + 2OH- > 2H2O + 2e- |
The alkaline hydrogen oxygen fuel cell: reaction taking place at positive electrode | O2 + 2H2O + 4e- > 4OH- |
The alkaline hydrogen oxygen fuel cell: overall equation | 2H2 + O2 > 2H2O |
Advantages of fuel cells: why are they more efficient | They convert more of their available energy into kinetic energy |
Advantages of fuel cells: what is the only waste product | Water |
Advantages of fuel cells: why do they not need to be recharged | They produce a continuous supply of energy so long as hydrogen and oxygen are supplied so they do not need to be recharged |
Disadvantages of fuel cells: what is the disadvantage relating to hydrogen being produced | Can be done by electrolysis of water but requires electricity- burning fossil fuels |
Disadvantages of fuel cells: why must hydrogen be handled carefully when stored and transported | It’s explosive and flammable |
Disadvantages of fuel cells: what is there nothing of relating to hydrogen fuel | No infrastructure to provide hydrogen fuel for cars |