| 초록 |
Perfluorinated sulfonic acid (PFSA) ionomers have been widely used for green power generation including polymer electrolyte membrane fuel cells (PEFCs), since the materials exhibit excellent chemical durability under their harsh application conditions as well as good ion-conducting capability. Even PFSA materials, however, suffer from physical failures associated with repeated membrane swelling and deswelling, resulting in reduced eletrochemical performances. To date, there have been a lot of approaches to solce these problems. Among them, one promising way would be to choose pore-filling concept in which ion exchange resins are filled within microporous structures of substrates. In this study, PFSA pore-filling membranes employing a hydrophilic poly(tetrafluoro ethylene) (PTFE) support film with nanoscale pores were prepared via vacuum-free impregnation method and their fundamental characteristics were systematically evaluated. |
