| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
우수논문(구두)_박사과정 |
| 제목 |
Towards long-cycle life zinc-bromine flow batteries: Suppressed zinc dendrite growth using defective carbon electrode |
| 초록 |
Among various redox flow batteries (RFBs), several hybrid RFBs have adopted Zn anodes to substitute for lithium anodes because of non-flammable, being operable in aqueous electrolytes and high specific capacity (820 mAh·g-1). However, no single zinc based RFBs has met cycle-life targets required for successful EES implementation due to internal short-circuit induced by dendritic growth of Zn at high current densities. To alleviate Zn dendrite, here, we report defected carbon layer coated carbon felt (D-CF) electrode that was prepared from zeolitic imidazole frameworks. The extraordinary dendritic suppression effects validated by density functional theory simulations with mathematical metal growth model. Consequently, the zinc-bromine flow batteries (ZBBs) assembled with the prepared D-CF shows 5,000 cycles at 100 mA·cm-2, which represents the best performance for ZBBs. |
| 저자 |
이주혁, 김리율, 최찬용, 김수현, 허지윤, 권재형, 김희탁
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| 소속 |
한국과학기술원 |
| 키워드 |
Metal dendrites; Carbon vacancy defects; Metal-organic frameworks; zinc-bromine flow batteries; DFT calculations; Chronoamperometry
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| E-Mail |
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