Hydrogen electrolysis
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Hydrogen electrolysis. Hydrogen electrolysis is the process of running an electrical current through water (H 2 O) and separating the hydrogen from the oxygen. Process is the REVERSE of what occurs in a fuel cell. (-) (+). 9v. + / -. e. -. e. -. e. -. H 2. O 2. e. -.

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Hydrogen electrolysis

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Hydrogen electrolysis

Hydrogen electrolysis

Hydrogen electrolysis is the process of running an electrical current through water (H2O) and separating the hydrogen from the oxygen.

Process is the REVERSE of what occurs in a fuel cell

(-) (+)


Hydrogen electrolysis

9v

+ / -

e

-

e

-

e

-

H2

O2

e

-

Electrolysis

Cell

Fuel

Cell

H2

O2

(H2O)

H2O

Anode

Cathode

Anode

Cathode

Fuel cell: Hydrogen and oxygen gases flow into the cell producing water and electricity.

Electrolysis cell: Hydrogen and oxygen gases produced when electricity flows through an electrolyte containing water.


Electrochemical reactions

Electrochemical reactions

  • Cathode – hydrogen reduced

    • 4H2O + 4e- 2H2 + 4OH-

  • Anode – hydrogen oxidized

    • 2H2O  O2 + 4H+ + 4e-

  • Overall reactions

    • 2H2O  O2 + 2H2

    • 4OH- + 4H+ 4H2O

  • Overall reaction requires electrical energy added


Today s lab

Today’s Lab

Investigate bench top scale hydrolysis to produce Hydrogen Fuel


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