| 초록 |
Polymer electrolyte membrane fuel cells (PEMFCs) have attracted considerable attentions as alternative and environmentally friendly energy sources for transportation, portable devices, and stationary power. In order to apply a polymer electrolyte membrane to fuel cells with good performance, the polymer electrolyte membrane should have several requirements such as low cost, high proton conductivity, sufficient thermal stability, low permeability, long-term stability and durability. In this study, as a novel class of proton exchange membrane (PEM) materials for application in fuel cells, crosslinkable sulfonated poly(arylene ether)s were successfully prepared by direct copolymerization via nucleophilic substitution reaction. The synthesized copolymers were characterized by 1H-, 19F-NMR and FT-IR. The thermal stabilities of the copolymers were characterized by DSC and TGA. The transport properties of the proton exchange membranes were observed as changing the sulfonation degree (DS). |
