PROTON CONDUCTORS BASED ON AROMATIC POLYETHERS AND THEIR USE AS ELECTROLYTES IN HIGH TEMPERATURE PEM FUEL CELLS

摘要

Polymer electrolyte membranes with polyethylene oxide and phophonic acid moieties tethered on the main polyether backbone are provided as single phase proton conductors. Preferred polymers can exhibit good mechanical properties, high thermal and oxidative stability. The membrane-electrode assembly (MEA) is also provided.