| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.1817 |
| 발표분야 |
에너지 환경 |
| 제목 |
Nafion-Carbon Quantum dots (Nafion-CQDs) composite membrane for vanadium redox flow battery systems |
| 초록 |
Vanadium redox flow battery (VRFB), a type of energy storage system (ESS), can be designed easily and is excellent in terms of lifespan and stability. VRFB membrane is considered high hydrogen ion conductivity, low vanadium ion permeability and high stability in acidic solutions. Fluorine-based Nafion membrane, manufactured by Dupont, has excellent stability in acidic solutions, but lifespan is reduced due to high vanadium ion permeation. In order to improve above disadvantage, this study utilized a Nafion-CQDs composite membrane prepared by carbon quantum dots (CQDs) with an eco-friendly hydrothermal synthesis method. Carbon quantum dots composed of nano-sized particles have abundant functional groups, which not only enhances hydrogen ion conduction, but also prevents penetration of vanadium ions as a barrier to maintain a long lifespan. Therefore, Nafion-CQDs membrane was significantly improved from 72% (present Nafion membrane) to 86%. |
| 저자 |
정다솜1, 김성천2, 조철현3, 윤대희3, 임성남3, 황해진1, 최시영4, 박제성3
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| 소속 |
1인하대, 2한국과학기술원(KAIST) / 한국생산기술(연), 3한국생산기술(연), 4한국과학기술원(KAIST) |
| 키워드 |
에너지 |
| E-Mail |
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| 원문파일 |
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