comparison between membranes prepared from sulfonated poly (ether ether ketone) and sulfonated poly (ether ether sulfone) for application in proton exchange membrane fuel cells

Fuel cells convert the energy of chemical reactions directly to electrical energy. Polymer electrolyte membrane fuel cells (PEMFCs) are one of the most promising types of fuel cellswhich employ a thin polymer membrane as an electrolyte. Poly(ether ether ketone)s and poly(ether ether sulfone)s arehigh performance engineering thermoplastics with high glass transition temperature; good mechanical properties; high thermal stability, and excellent resistance to hydrolysis andoxidation which make them attractive choices as polymer electrolyte membranes [1-3].