| 초록 |
PEMFCs have been noticed as the promising power sources because of their attractive benefits. The proton exchange membranes, which conduct protons from anode to cathode, are the key component in PEM Fuel Cells. Nafion is widely used as PEM due to their high proton conductivity as well as excellent chemical stabilities. However, its high cost and the environmental hazards limit the commercial applications in PEMFCs. To overcome these disadvantages, we have developed highly sulfonated poly(fluorenyl ether sulfone nitrile)s as novel electrolyte membranes. They show high water uptake and proton conductivity due to thier highly sulfonated structure. In addition, the introduction of nitrile groups into highly sulfonated poly(fluorenyl ether sulfone)s can reduce high water swelling of the membrane due to the strong dipole-dipole interaction between nitrile groups. Synthesis and properties of these newly-developed polymer membranes will be discussed. |
