| 학회 |
한국재료학회 |
| 학술대회 |
2012년 가을 (11/07 ~ 11/09, 라카이샌드파인 리조트) |
| 권호 |
18권 2호 |
| 발표분야 |
C. 에너지/환경 재료(Energy and Environmental Materials) |
| 제목 |
Nafion-based Composite Membrane Coated with Microporous Layered Silicate/Nafion for Direct Methanol Fuel Cells |
| 초록 |
Microporous layered silicate AMH-3 has a 3D ordered porous structure that can be used as a permselective barrier and is therefore very promising as a solution for the methanol crossover problem of Nafion in direct methanol fuel cells (DMFCs). In order to apply this material to Nafion, the removal of the Na+ and Sr2+ cations located in the intralayer and interlayer spaces and the delamination of an individual layer must be carried out. We obtained delaminated AMH-3 by acid-hydrothermal treatment without the use of swelling agent. The coating of the Nafion-based composite membrane with the delaminated AMH-3/Nafion layer was carried out by means of a solution casting method respectively. The Nafion-based composite membrane was evaluated for liquid uptake, methanol permeability and proton conductivity. This membrane exhibited lower methanol permeability than neat Nafion while maintaining proton conductivity. We conclude that surface-modified Nafion with delaminated AMH-3 is a good candidate for the reduction of methanol crossover in DMFCs. |
| 저자 |
김지훈, 곽승엽
|
| 소속 |
서울대 |
| 키워드 |
DMFC; Nafion; layered silicate; AMH-3
|
| E-Mail |
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