DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Chung, Sung-Yoon | - |
dc.contributor.advisor | 정성윤 | - |
dc.contributor.author | Kim, Jiheon | - |
dc.date.accessioned | 2022-04-21T19:33:13Z | - |
dc.date.available | 2022-04-21T19:33:13Z | - |
dc.date.issued | 2021 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=962538&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/295533 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 신소재공학과, 2021.8,[v, 64 p. :] | - |
dc.description.abstract | For the last decade, in order to solve low energy density and specific capacity, which is a clear limitation of currently commercialized lithium secondary batteries, research and development has been positively implemented on secondary battery systems. Lithium-sulfur secondary batteries, which are evaluated as the most realistic of the next-generation secondary batteries, have advantages in terms of price and theoretical energy density, however, they have fundamental limitation of reducing lifespan characteristics due to lithium polysulfides dissolution and insulating nature of sulfur. In this Ph.D. dissertation, introducing one chemical approach to address the low conductivity and lithium polysulfides dissolution. The "nucleophilic aromatic substitution" is a synthesizing method of substituting fluorine functional group in an aromatic backbone to sulfur. This method achieves high reaction yields, conductivity, and lithium polysulfides adsorption capacity due to various heteroatoms and metals present in the aromatic molecule. Comprehensively, I have researched interaction between synthesized sulfur composites and lithium ion to reveal its electrochemical mechanisms. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | lithium-sulfur batteries▼alithium polysulfides▼anucleophilic aromatic substitution▼aconductivity▼aenergy density | - |
dc.subject | 리튬-황 이차전지▼a리튬 폴리설파이드▼a친핵성 방향족 치환▼a전도도▼a에너지 밀도 | - |
dc.title | Development of material design for advanced lithium-sulfur batteries via nucleophilic substitution chemistry | - |
dc.title.alternative | 친핵치환 기반 고성능 리튬-황 전지용 재료 설계 및 개발 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :신소재공학과, | - |
dc.contributor.alternativeauthor | 김지헌 | - |
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