| 초록 |
Ionic liquids are considered as an important key factor for high temperature fuel cells (PEFCs) because they behave like water under anhydrous and high temperature conditions due to its non-volatile and high proton conducting properties in membranes. Also, the proton conductivity of the membranes increases with increasing contents of ionic liquids. However, ionic liquids are easily leached out from the polymeric network of the membrane. To solve this problem, we have employed pore-filled polymer electrolyte membranes immobilized with ionic liquids. The characterization of the ionic liquids immobilized pore-filling membranes were carried out by nuclear magnetic resonance (H-NMR), fourier-transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), and impedance spectroscopy. As a result, the pore-filling membranes showed high proton conductivity and thermal stability under un-humidified condition at high temperature over 100 oC. |
