Summary of learning objectives from the 8 experiments:
• In electrolysis twice as much gas is produced at the cathode than produced at the anode.
• History surrounding discovery and identification of the two gases hydrogen and oxygen, and the classic tests for identifying each gas.
• Explore how the orientation of solar cells affects electrical energy output.
• That hydrogen fuel can produce an electric current when used in a fuel cell.
• That more hydrogen is consumed when the electric motor does more work.
• To understand the basic scientific principles behind the fuel cell.
• To consider the future implications of changing to a hydrogen-powered economy.
Reversible PEM fuel cell
Dimensions (length x width x height) 3” x 31/4” x 31/4” (72 x 80 x 80 mm)
Electrolyzer operation:
Required voltage: 1.4 – 1.8 V DC
Storage volume of hydrogen and oxygen 15 ml eachFuel cell operation:
Power output: 0.4 W
Voltage output: 0.4 – 0.9 VClimatic conditions:
Required ambient temperature for operation 10 – 35° C
Required storage temperature 10 – 35° C
Car chassis with electric motor:
Dimensions (length x width x height) 81/2” x 41/2” x 13/4” (210 x 110 x 45 mm)
Voltage requirement for motor operation 0.5 – 3.0 V
Rate of hydrogen consumption in drive mode 3 – 5 ml/min.
Running time of car 3 – 5 min.
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