| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.605 |
| 발표분야 | 기능성 고분자 |
| 제목 | Synthesis and characterization of sulfonated poly(aryl ether benzimidazole) copolymers as proton exchange membrane for fuel cells |
| 초록 | The proton conducting membrane is one of the most important materials in development fuel cell applications. Sulfonated perfluorocopolymers such as Nafion and Flemion have been used in practical systems due to their high proton conductivity and excellent chemical and mechanical stability. However, these membranes have some disadvantages in reduced conductivity at high temperature, and high methanol permeability and high price. Nonfluorinated polymer electrolyte membranes materials such as sulfonated aromatic hydrocarbon polymer membranes suitable for PEMFC or DMFC applications are under active develpement. Aromatic polybenzimidazole (PBI) have attracted much attention for their potential use in PEM because they have excellent thermal stability and mechanical durability [1]. And also PBI is a basic polymer which can readily be complexed by a strong acid, to give acid-doped PBI membranes [2-3]. In this work, we will present the synthesis of sulfonated poly(aryl ether benzimidazoles) (PAEBI) and the conductivity of PAEBI doped with H3PO4, HNO3, H2SO4 and HCl. The properties of doped PAEBI forfuel cell membranes will be also discussed. Fig.1 Conductivities of PAEBI-20 doped with various acids Reference 1. Journal of New Materials for Electrochemical Systems 2, 95-101 (1999) 2. J.s. Wainright, J.T. Wang, D. Weng, R.F. Savinell, M. Litt, J. Electrochem. Soc. 142 (1995) L121. 3. Q. Li, R. He, J.O. Jensen, N.J.Bjerrum, Fuel Cell 2004, 4, No 3 |
| 저자 | 김석제1, 박형수1, 이창현2, 이영무2, 홍영택1 |
| 소속 | 1한국화학(연), 2한양대 |
| 키워드 | Polybenzimidazole; acid doping; fuel cell membranes; ion conductivity; methanol permeability |
