Producing Hydrogen And Oxygen (Electrolysis) - fischertechnik PROFI Hydro Cell Kit Bedienungsanleitung

Producing hydrogen and oxygen (electrolysis)

The fuel cell must be supplied with a direct voltage between 1.4 and 2 volt.
Caution! Material damage possible:
If the voltage is too high, it can destroy the fuel cell membrane. The fuel cell must
never be connected to a 9 V fi schertechnik power supply.
The solar module included in the Hydro Cell Kit consists of two solar cells, which are connected
in series. If it is not connected to a load, the solar module supplies a maximum voltage of 1.2 V
(no-load voltage). As this voltage is not enough for the electrolysis, you will need another solar
module from the Profi Oeco Tech kit.
Connect the two solar modules (Item # 136239) in series and connect them to the fuel cell (see
Fig. 2 on page 3). Depending on the light intensity, the two solar modules now supply a voltage
of 1.4 – 1.8 volt.
Tip: Have you got the "Profi Oeco Power" kit? Then you can use its solar cells and the solar
module of the Hydro Cell Kit. Connect them in series and connect everything to the fuel cell
(1x solar module Item # 136239, 2 x solar cells Item # 62567. See Fig. 4 on page 101). The voltage
now also reaches 1.4 – 1.8 volt.
Production of hydrogen and oxygen begins as soon as the solar modules or the solar cells are
lit with suffi cient sunlight or a suitable light source. The gases are stored in the corresponding
storage cylinders. The water is pressed into the overfl ow chambers above the cylinders.
The fuel cell is completely "charged" when all the water from the
hydrogen storage cylinder (2) has been pressed into the overfl ow
chamber above it (1). This process lasts around 15 – 60 minutes,
depending on the light intensity.
You can now disconnect the fuel cell from the solar modules.
This stops the production of hydrogen and oxygen.
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