| 초록 |
For polymer electrolyte membrane fuel cell (PEMFC), The membranes prepared from Poly(arylene ether ketone)(PAEK) are one of the potential membranes because of its economical efficiency, uncomplicated sulfonation. However, it is easily degraded by hydroxyl radicals. In this study, aminoethyl-15-crown-5 (CR) was grafted to PAEK to prevent the migration of Ce3+ for long-term anti-oxidation stability, as CR forms a coordination complex with Ce3+. The chemical and physical structures of membranes were investigated by FT-IR, 1H NMR, and SAXS. The presence of Ce3+ reduces proton conductivity but doesn’t affect thermal and mechanical properties. The anti-oxidation property of the CR grafted PAEK were investigated and compared with PAEK without CR. According to Fenton test, the membrane with addition of CR/Ce3+ exhibits an improvement of anti-oxidation ability and an increase in the proton conductivity compared to the membrane containing only Ce3+ ion. |
