Proton membrane hydrogen fuel cell teaching instrument.

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The principle that hydrogen and oxygen can generate electricity in teaching experiment:
On a piece of 310x130mm PMMA it is placed from left to right in turn: water electrolysis device two water storage gas tanks proton membrane fuel cell (platinum carbon proton membrane 25x25mm) positive and negative banana wiring connected with electrical appliances voltage and current indicator board with fan and an emergency hydrogen bottle (for water electrolysis devices in troubled times) crocodile at one end. Red-black connection with one end fork sodium sulfate reagent 30g.
In the experiment 80 ml of pure water was poured into 5-6G neutral sodium sulfate reagent to configure electrolytic water and the positive and negative banana wiring was inserted into the socket of fuel cell power generation membrane block. Open the connecting pipe between the water electrolysis device and the gas storage tank pour electrolytic water into the long neck funnel of the water electrolysis device until the water q is less than 2 cm below the two electrolytic plunger plugs then go to the pure water and pour it into two water storage tanks and then transfer it to the fuel cell power generation membrane block through the gas storage tank. When the voltage on the voltage indicator reaches about 0.7V turn on the fan switch and small fan. Start turning.
Matters needing attention:
1. When injecting electrolytic water and purified water please open the connecting pipe to avoid the water can not be poured in.
2. When connecting the external power supply do not connect wrong cathode hydrogen production anode oxygen production.
3. When generating electricity if the voltage keeps going up it may be that the excessive impurities in fuel cells hinder the formation of the exhaust plug under the power generation membrane block of fuel cells. The exhaust plug can be opened and shut down rapidly so that the fuel cells can exchange hydrogen and oxygen smoothly.
4. In water electrolysis when the gas column in the two gas storage tanks reaches about 2 cm the power supply can be turned off and the water electrolysis can be stopped. At this time the hydrogen and oxygen are enough to support the small electric fan to rotate for about 30 minutes.