This invention is an improved fuel cell design for use at low pressure.
The invention has a reduced number of component parts to reduce
fabrication costs, as well as a simpler design that permits the size of
the system to be reduced at the same time as performance is being
improved.In the present design, an adjacent anode and cathode pair are
fabricated using a common conductive element, with that conductive
element serving to conduct the current from one cell to the adjacent one.
This produces a small and simple system suitable for operating with gas
fuels or alternatively directly with liquid fuels, such as methanol,
dimethoxymethane, or trimethoxymethane. The use of these liquid fuels
permits the storage of more energy in less volume while at the same time
eliminating the need for handling compressed gases which further
simplifies the fuel cell system. The electrical power output of the
design of this invention can be further increased by adding a passage for
cooling the stack through contact with a coolant.