Development of air electrode materials in lithium-oxygen batteries for improving next-generation electric vehicles차세대 전기자동차용 리튬-공기전지의 성능 향상을 위한 공기극 소재 개발에 관한 연구

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With increasing needs for large-scale energy storage technologies, rechargeable lithium-air (Li-O2) battery has been recognized as one of the most promising candidates over the past decade. The Li-air batteries have the highest theoretical energy density $(3,505 Wh kg^{-1})$ among any known energy storage systems, but the critical challenges including high charging overpotential, low power density, and low round-trip efficiency resulting in poor cycle life still remain unsolved. Especially, the development of efficient air cathode has a great significance for improving overall cell performance because the key reactions, i.e., oxygen reduction and evolution reaction (ORR/OER), occur at the cathode surface during battery operation. In this thesis, we introduce various 1D nanomaterials as catalysts in air cathode, and assess the cell performance. Furthermore, we suggest a new air cathode configuration, in which 1D carbon nanofibers (CNFs) network as a current collector is integrated with catalysts, and assess its electrochemical performance in $Li-O-2$ battery and feasibility in real Li-air battery.
Advisors
Kim, Il-Dooresearcher김일두researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 신소재공학과, 2018.2,[ix, 113 p. :]

Keywords

Li-O2 batteries▼aone dimensional nanomaterials▼aair electrodes▼acatalysts▼acarbons; 리튬-공기전지▼a1차원 나노소재▼a공기극▼a촉매▼a탄소

URI
http://hdl.handle.net/10203/264971
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=734359&flag=dissertation
Appears in Collection
MS-Theses_Ph.D.(박사논문)
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