DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 강정구 | - |
dc.contributor.author | Kim, Tae Hyeon | - |
dc.contributor.author | 김태현 | - |
dc.date.accessioned | 2024-07-30T19:31:12Z | - |
dc.date.available | 2024-07-30T19:31:12Z | - |
dc.date.issued | 2024 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1096738&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/321520 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 신소재공학과, 2024.2,[iii, 40 p. :] | - |
dc.description.abstract | Recently, demands for rechargeable energy storage systems, such as secondary Li-ion battery, have remarkably increased. Especially, the zinc-air battery (ZAB) is one of promising energy storage systems because zinc metal is quite stable compared to lithium metal in ambient conditions and it is abundant on Earth. One critical issue for operating ZAB is the requirement of an efficient and stable air cathode for the reversible oxygen reduction and evolution reactions (ORR & OER). Herein, we introduce nitrogen-doped copper sulfide (N-CuS) as a bifunctional ORR/OER air cathode. Although pristine CuS has oxygen reduction catalytic activity, nitrogen atoms doped in CuS lattice facilitate not only active sites but also electrochemical conductivity. As a result, ZAB using N-CuS air cathode reveals superior electrochemical capacity (1.20 V vs. Zn/{\rm Zn}^{2+} at 1\ mA\ {\rm cm}^{-2}) compared to when using pristine CuS. In addition, unlike conventional ZAB systems, the redox reaction concerning Cu in N-CuS ensures the effective electrochemical charge/discharge properties even in anaerobic conditions. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 질소 도핑된 황화/산화 구리 전극▼a이중 기능성 산소 환원/생성 반응 촉매▼a산소 및 무산소 배터리 모드▼a고에너지 밀도 및 장기간 안정성▼a아연-공기 전지 | - |
dc.subject | Nitrogen-doped copper sulfide/oxide cathode▼aBifunctional oxygen reduction/evolution reaction catalyst▼aBoth aerobic and anaerobic battery modes▼aHigh energy density and long cycle stability▼aZinc-air battery | - |
dc.title | Bifunctional N-doped copper sulfide/oxide cathode for zinc-air battery operable in both aerobic and anaerobic environments | - |
dc.title.alternative | 산소와 무산소 환경에서 작동 가능한 아연-공기 배터리의 질소 도핑 황화/산화 구리 이중 촉매 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :신소재공학과, | - |
dc.contributor.alternativeauthor | Kang, Jeung Ku | - |
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