fischertechnik PROFI, Instruction Manual

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Experiments using the Fuel Cell kit & Profi Oeco Energy
The activity booklet of the Profi Oeco Energy kit contains many other exciting experiments that
you can perform with the Fuel Cell kit.
The corresponding models are described in the Profi Oeco Energy assembly instructions.
Experiments using the Fuel Cell kit & Profi Oeco Tech
Experiments and models are shown in the Profi Oeco Tech kit which require the Hydro Cell kit.
You can also perform these experiments with the Fuel Cell kit. However, you will have to impro-
vise a bit when installing the fuel cell and the solar module, as these have different dimensions
and mounting options to the components in the Hydro Cell kit. Further notes on this are given on
page 77.
Fuel cell technical data
General Operation as electrolyzer
Operating temperature 10 – 40 °C Operating voltage 2 – 3 V
Storage temperature 5 – 40 °C Operating current 400 – 1500
mA
Hydrogen storage capacity 20 ml Maximum hydrogen production rate 8 ml / min
Operation as fuel cell
Operating voltage 0.5 – 0.9 V
Operating current 600 mA
Nominal power 300 mW
Troubleshooting
Fault Possible cause Remedy
Unusually high voltage, if
a load is connected to the
fuel cell Coat on the surface of the
catalyst The coat on the surface of the catalyst, which
increases the initial output voltage of the fuel
cell, disappears after a few seconds
No or very slow hydrogen
production Incorrect connection between
solar modules and fuel cell Check connections and if necessary correct
Light intensity too low Increase the light intensity
Fuel cell membrane is too dry Leave the fuel cell fi lled with distilled
water to stand for 30 minutes
Low fuel cell output Fuel cell membrane is too wet Pour water out of the fuel cell and leave
the fuel cell to stand open for a day