The fuel cell consists of six plastic parts. but the frames are split up
into two parts each. This allows for the carbon electrodes to be mounted between two frames, as was already the case
for the membrane before. This ensures the fragile carbon cloth is fixed in the center of each chamber and can be
tapped by squeezing a wire between the gaskets. Since the material is highly porous, bacteria and medium can diffuse
through the electrode and travel between both halves of a single chamber.