| 초록 |
Perfluorinated sulfonic acid (PFSA) ionomers have been used as representative membrane materials in a wide range of applications such as fuel cells, chlor-alkali processes, and redox flow batteries. Though PFSA ionomers have been well known as chemically durable materials, their chemical resistance should be improved further to apply them to practical fuel cell systems operated under harsh conditions. One plausible solution would be to fabricate reinforced membranes composed of proton-conducting polymer electrolytes and chemically durable porous supports. In this study, pore-filling membranes (PFMs) are prepared via the impregnation of PFSA ionomers into microporous poly(tetrafluoroethylene) (PTFE) support films. Interestingly, the PFMs exhibit extremely high proton conduction when compared with a mother PFSA. The objective of this study is to systematically disclose material factors determining proton transport and thereby electrochemical single performances. |
