fuel cell lecture

fuel cell lecture - Thermodynamic Efficiency of Fuel Cells...

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Unformatted text preview: Thermodynamic Efficiency of Fuel Cells Power to the electrons Thermodynamic Efficiency of Fuel Cells Purpose Compare power and efficiency of various cell types Fuel Cell produces electricity from paired oxidation/reduction chemical reactions continually produces electrical energy same principle as battery, but: batteries are energy storing devices batteries have fixed amount of reactants energy production ends when reactants consumed Fuel Cell Types Cell Type Anode Cathode Hydrogen H 2 (g) 2H + (aq) + 2e- O 2 + 2H + (aq) + 2e- H 2 O Methanol CH 3 OH(l) + H 2 O (l) CO 2 (g) + 6H + (aq) + 6e 1.5O 2 + 6H + (aq) + 6e- 3H 2 O Mini- or Alkaline NaBH 4 + 8 OH (aq) NaBO 2 + 6 H 2 O + 8 e 2O 2 + 4H 2 O + 8e- 8OH- (aq) Mini- or Alkaline CH 3 OH( ) + 6 OH (aq) CO 2 (g) + 5 H 2 O + 6 e 1.5O 2 + 3H 2 O + 6e- 6OH- (aq) Making the fuel by electrolysis Hydrogen and oxygen are captured and used as the fuel and oxidizer for the fuel cell Hydrogen Fuel Cell Obstacles to commercial development of...
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fuel cell lecture - Thermodynamic Efficiency of Fuel Cells...

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