The principle of water recovery
The stack is the power-generating core of the SFC fuel cells. It consists of individual cells, each of which is set up to include an anode, a cathode, and a membrane. The membrane, as an electrolyte, separates the anode from the cathode. Positively charged, electric particles, so-called photons, can diffuse through the membrane. On the side of the anode, water and methanol are added, on the side of the cathode, oxygen is taken from the ambient air. In the reaction on the anode, H+ ions and free electrons are created, as well as the reaction product carbon dioxide (CO2). The protons can cross the membrane. The electrons, however, have to travel to the cathode side via a connected electric circuit during which they generate power. On the cathode, the H+ ions, the oxygen from the air, and the electrons are converted into water vapor. SFC fuel cells are therefore very environmentally friendly.