Ion-exchange materials with improved ion conductivity

摘要

Ion-exchange materials comprising a polymeric backbone and a plurality of pendent styrenic or fluorinated styrenic macromonomers covalently bonded thereto, wherein the plurality of pendent styrenic or fluorinated styrenic macromonomers comprise a uniform number of styrenic or fluorinated styrenic monomer repeat units, and wherein predominantly all of the styrenic or fluorinated styrenic monomer repeat units have at least one charged group. Processes for making such materials, as well as products related thereto, are also disclosed. In a representative embodiment, the ion-exchange material is utilized as a proton-exchange membrane (PEM) for use in a PEM fuel cell.