| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 봄 (04/20 ~ 04/21, 대구 인터불고 호텔) |
| 권호 |
12권 1호, p.757 |
| 발표분야 |
에너지/환경 |
| 제목 |
Nanocomposite Membranes with Montmorillonite Fillers Functionalized with Various Sulfonic Acids |
| 초록 |
Organic sultones and a perfluorinated sultone were grafted on the surface of montmorillonite (MMT) to render the organic sulfonic acid (HSO3-) functionality. The nanocomposite membranes were casted together with Nafion? using these functionalized MMTs as inorganic fillers. Grafting with the perfluorinated sultone was more efficient on the surface of MMT than with non-fluorine organic sultones. Montmorillonite functionalized with perfluorinated organic sulfonic acid also showed higher ion exchange capacity and ion conductivity, desired attributes to serve as an effective filler of a nanocoposite membrane with Nafion?. The nanocomposite membrane reduced the relative permeability of methanol in 3M solution by ca. 40%, while maintaining comparable ionic conductivity relative to pristine Nafion membrane. This leads to much enhanced performance of direct methanol fuel cell employing the Nafion?/sulfonated MMT nanocomposite membrane. |
| 저자 |
김영권1, 이창훈2, 김혜경3, 장 혁3, 이재성1
|
| 소속 |
1포항공과대, 2LG화학(연), 3삼성종합기술원 |
| 키워드 |
perfluorinated sulfonic acid groups; Nafion; nanocomposite membranes; methanol crossover; direct methanol fuel cell
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
