| 초록 |
Nafion is eco friendly and used in proton exchange membrane fuel cells. The structure of Nafion has a sulfonic acid group at the end of the chain. Sulfonic acid groups are hydrophilic and form ion clusters around water molecules. Ion clusters act as passages for ions to move. The Nafion chains are arranged irregularly, and the ion clusters are arbitrarily located. In this study, PDMS molds were used to obtain 5,10 and 20 μm nafion pattern membranes. Ion channels were arranged by capillary force. The pattern was confirmed by OM, SEM, AFM and SAXS. The phase separation is clear in the AFM image. At 5um, it was confirmed that it was more aligned than the other lines. As a result, it had an effect on the improvement of ion conductivity. |
