| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 |
21권 2호 |
| 발표분야 |
에너지저장변환_포스터 |
| 제목 |
A hydrocarbon/Nafion bilayer membrane with a mechanical nano-fastener for vanadium redox flow batteries |
| 초록 |
Hydrocarbon (HC) membranes have not been successfully employed for vanadium redox flow batteries (VRFBs) due to their severe chemical degradation by highly oxidative VO2+ ion in the positive electrolyte. Protective coating of stable Nafion ionomer on HC membranes can retard the degradation, but achieving strong interfacial adhesion of the two layers without losing proton conductivity presents a challenge. Here, we report a SPAES/Nafion bilayer membrane (S/N membrane), the interface of which is mechanically fastened by a three-dimensionally interlocked interfacial layer (3-D IIL). The 3-D IIL, which features a ball and socket joint structure, strongly binds the two chemically dissimilar membranes and thus does not generate additional interfacial resistance. As a result, the VRFB with the S/N membrane achieves higher coulombic and energy efficiencies and longer cycling durability than that with Nafion 115. |
| 저자 |
김수현1, 육성민1, 김현규1, 최찬용1, 김리율1, 이장용2, 홍영택2, 김희탁1
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| 소속 |
1한국과학기술원, 2한국화학(연) |
| 키워드 |
Vanadium redox flow battery; Hydrocarbon membrane; Nafion; Chemical stability; Interlocked interface
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| E-Mail |
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