The phosphoric acid fuel cell uses phosphoric acid as an electrolyte and two porous nickel electrodes coated with nickel catalyst. It works by oxidizing hydrogen at the anode and reducing oxygen at the cathode to produce electricity through an electrochemical reaction. This type of fuel cell is well-suited for stationary power applications due to its high efficiency and relatively low operating temperatures.

1. Phosphoric acid fuel cell
E. SHRAVANI 22011P0521

2. Working

3. Electrolyte: Phosphoric acid.
Electrodes: Two electrodes of porous conducting material usually nickel.
Catalyst: Finely powdered nickel is provided on the outer surface of electrodes which act as catalyst

4. Applications and Impact