$CO_2$-derived porous carbon containing high sulfur content used as a cathode in lithium-sulfur batteries = 높은 황 함량을 가진 이산화탄소 유래 탄소의 리튬-황 전지 양극재로서의 활용

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dc.contributor.advisorPark, Seung Bin-
dc.contributor.advisor박승빈-
dc.contributor.authorLee, Sang Yeon-
dc.date.accessioned2019-09-03T02:43:30Z-
dc.date.available2019-09-03T02:43:30Z-
dc.date.issued2019-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843737&flag=dissertationen_US
dc.identifier.urihttp://hdl.handle.net/10203/266324-
dc.description학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2019.2,[iii, 27 p. :]-
dc.description.abstractLithium-sulfur (Li-S) batteries are one of the promising candidates as the next generation energy storage devices, suitable for various mobile and stationary electronics. In this work, hierarchical porous carbon derived through $CO_2$ conversion is used as the host material for a cathode in Li-S batteries. $NaBH_4$ is used as a reducing agent and $CaCO_3$ as a nano-template to synthesize the hierarchical porous carbon named CPC. The S/C composite fabricated through melt diffusion technique contains high sulfur content above 80 wt% due to the large pore volume of CPC, especially in mesoporous area. S/C composite alleviates the shuttle effect and provides a conductive pathway for charge transfer. Moreover, carbon nanofiber (CNF) interlayer is used in combination to achieve a high initial capacity of 1105 mAh/g and discharge capacity of 687 mAh/g after 100 cycles at 0.2 C. The novelty of this work lies on introducing $CO_2$ derived CPC to synthesize S/C composite in combination with the CNF interlayer to enhance the performance of Li-S batteries.-
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectLithium-sulfur batteries▼a$CO_2$ conversion▼ahierarchical porous carbon▼ahigh sulfur loading▼aCNF interlayer-
dc.subject리튬-황 전지▼a이산화탄소 전환▼a다공성 탄소▼a높은 황 함량▼a탄소나노섬유 중간층-
dc.title$CO_2$-derived porous carbon containing high sulfur content used as a cathode in lithium-sulfur batteries = 높은 황 함량을 가진 이산화탄소 유래 탄소의 리튬-황 전지 양극재로서의 활용-
dc.typeThesis(Master)-
dc.identifier.CNRN325007-
dc.description.department한국과학기술원 :생명화학공학과,-
dc.contributor.alternativeauthor이상연-
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