| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Characterization of Nafion®/Silane Nanocomposite Membranes for Direct Methanol Fuel Cells |
| 초록 |
Direct methanol fuel cells (DMFCs) have recently widened the field of alternative energy generation. But there are two major problems which impede the commercial use of DMFC systems: severe methanol crossover and limited anode catalyst activity. Methanol is much more difficult to be oxidized in comparison with hydrogen and its crossover through thin ionomer membrane causes a mixed potential which drastically reduces cell performance. The perfluorosulfonic acid polymer (PFSA) membranes, represented by Nafion®, are not an effective barrier for methanol permeation. To settle these problems, we fabricated new Nafion®/3-aminopropyl triethoxy silane (3-APTES) membrane where 3-APTES particles were chemically bonded to sulfuric acid group of Nafion® chain. Methanol diffusion coefficients for the modified membranes were found to be at least 50% lower than for those of Nafion®. The cell performance of Nafion®/3-APTES 10 wt% showed better performance than that of Nafion®. |
| 저자 |
김창겸, 강정수, 길이진, 이희우
|
| 소속 |
서강대 |
| 키워드 |
DMFC; Nafion; 3-APTES; Fuel Cell
|
| E-Mail |
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