| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 봄 (04/07 ~ 04/08, 대전컨벤션센터) |
| 권호 |
36권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
SiO2 Ceramic Porous Substrate-Reinforced Sulfonated Poly(arylene ether sulfone) Composite Membranes for Proton Exchange Membrane Fuel Cells |
| 초록 |
We develop a new ceramic-based porous substrate for a proton-conducting reinforced composite membrane targeting proton exchange membrane fuel cells (PEMFC) applications. The ceramic porous substrate comprises hygroscopic SiO2 particles (530 nm) interconnected by tetraethoxy silane (TEOS)-based silicate binders inside a nonwoven. The SiO2 particles interconnected by the TEOS binders play a key role in improving mechanical properties, hydrophilicity, and water retention capability of the ceramic porous substrate. The nonwoven serves as a support layer offering flexibility to the ceramic substrate. The ceramic porous substrate is subsequently impregnated with sulfonated poly(arylene ether sulfone). Compared to the pristine SPAES membrane, the SPAES-impregnated composite membrane incorporating the SiO2 ceramic porous substrate offers the substantially improved dimensional change and is effective in retarding the steep decline of proton conductivity at a low humidity condition. |
| 저자 |
설종헌1, 원지혜1, 윤경석2, 홍영택2, 이상영1
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| 소속 |
1강원대, 2한국화학(연) |
| 키워드 |
PEMFC; reinforced composite membranes; ceramic porous substrates; SiO2; sulfonated poly(arylene ether sulfone); nonwoven; dimensional change; proton conductivity; low humidity
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| E-Mail |
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