| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO)) |
| 권호 |
22권 1호 |
| 발표분야 |
에너지저장변환_포스터 |
| 제목 |
Ultrathin Nafion-filled porous membrane for zinc/bromine redox flow batteries |
| 초록 |
In this work, we present a 16 μm-thick Nafion-filled porous membrane for Zn/Br redox flow batteries (ZBBs). By using molecular dynamics simulation and dynamic light scattering analysis, we rationally design Nafion solution for Nafion impregnation into a porous polypropylene (PP) separator. A void-free Nafion/PP membrane is successfully fabricated by using NMP as a solvent for the Nafion solution. The resulting membrane shows a smaller area specific resistance in comparison with 600 μm-thick, commercial SF-600 porous membrane. Due to its dense morphology, Br2 diffusivity of the Nafion/PP membrane is two orders of magnitude lower than that of SF-600, resulting in a comparable Br2 crossover in spite of 37.5 times smaller membrane thickness. As a result, the ZBB based on the Nafion/PP membrane exhibits a higher energy efficiency, demonstrating that ion exchange membrane can outperform the conventional porous membrane by reducing the membrane thickness with inexpensive porous substrate. |
| 저자 |
김리율1, 김현규1, 두기수1, 최찬용1, 김수현1, 이주혁1, 허지윤1, 정호영2, 김희탁1
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| 소속 |
1한국과학기술원, 2전남대 |
| 키워드 |
Pore-filled membrane; Zn/Br redox flow batteries; Polypropylene microporous membrane; Nafion
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| E-Mail |
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