| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.619 |
| 발표분야 | 기능성 고분자 |
| 제목 | Preparation and properties of sulfonated poly(aryl ether sulfone)/silica composite membranes for DMFC |
| 초록 | Proton exchange membrane (PEM) plays a key role in fuel cell technology. The proton conducting properties of the majority of polyelectrolyte polymers used for PEM preparation in fuel cell applications are most commonly provided by sulfonic acid functionalities. While the perfluorosulfonic acid copolymers have been currently used due to their high proton conductivity and excellent chemical stability, their high cost and high methanol permeability are contributing factors preventing the wide spread use of fuel cells. We have been investigating new materials based cheaper polyarylethers, which are known for their excellent chemical and thermal stability. In this work, we will present the synthesis of sulfonated poly(aryl ether sulfone) composite membranes which were prepared by hydrophilic and hydrophobic silica to improve mechanical and thermal properties, and to reduce methanol permeation. The influence of dispersed hydrophilic and hydrophobic silica on the membrane properties of morphology, thermal and mechanical properties, water uptake, and proton conductivity will be discussed. . Fig.1 Proton conductivities of PAES-silica composite membrane Reference 1. S. Malhotra, R.J. Datta, J. Electrochem. Soc. 144 (1997) L23. |
| 저자 | 박형수1, 김형중2, 이창현3, 이영무3, 김주영4, 홍영택1 |
| 소속 | 1한국화학(연), 2공주대, 3한양대, 4삼척대 |
| 키워드 | Silica composite membrane; fuel cell membrane; ion conductivity; methanol permeability |
