Phosphoric acid fuel cells -PAFC
Phosphoric acid fuel cells (PAFC) uses liquid form of phosphoric acid. This liquid acts as electrolyte. PAFC were developed around time Alkaline Fuel Cells were developed in the 1960s. One of the important character of PAFC is stability that makes it an important fuel cell type for stationary apps.
Other advantages are relatively high temperature of operation that can be used to convert water into steam. PAFC tolerate very well CO2 or CO concentration of up to 1.5%.
PAFC utilized for stationary power generates within 100 to 400 kW range and used in buses or large vehicles. Some countries use PAFC for their submarine designs.
