**1.7. Polymer electrolyte membrane fuel cell: A case study**

Polymer electrolyte membrane fuel cell also known as proton exchange membrane fuel cell has been proposed to be a suitable candidate for use in fuel cell vehicles[2].

The major portion of the fuel comprises hydrogen (H2) and oxygen (O2) from air which together acts as an oxidant. Both react together electrochemically producing electricity and water as byproducts.

The different components of PEMFCs are as follows:

