The function of the AFC in seven steps (see animation):

Step 1

Inside the two seperate gas supply cicuits the gaseous oxygene and hydrogen flow into the gas area and the catalyzer.

Step 2

While getting in contact with the catalyzer the hydrogen molecules (H2) are splitted into two H+ protons. At the same time each hydrogen atom sends out one electron.

Step 3

The electrons move from the anode to the cathode and cause an electric current. This electric current supplies an electric capacitor with electric power.

Step 4

Respectively four electrons recombine with one hydrogen molecule at the cathode.

Step 5

The now generated oxygene ions react with water to OH ions.

Step 6

This hydroxide ions move through the electrolyte (potash solution) to the anode.

Step 7

The hydroxide ions react at the anode with the protons to water. The water is partly leaded back to the cathode to enhance the further reaction.