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DC Field | Value | Language |
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dc.citation.startPage | 137364 | - |
dc.citation.title | Electrochimica Acta | - |
dc.citation.volume | 367 | - |
dc.contributor.author | Umam, Khoirul | - |
dc.contributor.author | Sin, Byung Cheol | - |
dc.contributor.author | Singh, Laxman | - |
dc.contributor.author | Moon, Chaewon | - |
dc.contributor.author | Choi, Jaeeun | - |
dc.contributor.author | Lee, Inyoung | - |
dc.contributor.author | Lim, Jaewoong | - |
dc.contributor.author | Jung, Jaehoon | - |
dc.contributor.author | Lah, Myoung Soo | - |
dc.contributor.author | Lee, Youngil | - |
dc.date.accessioned | 2023-12-21T16:36:31Z | - |
dc.date.available | 2023-12-21T16:36:31Z | - |
dc.date.created | 2021-01-06 | - |
dc.date.issued | 2021-01 | - |
dc.description.abstract | Among polyanion-type cathode materials used for large-scale lithium-ion batteries (LIBs), LiFeBO3 (LFeB) has received attention due to its lowest weight framework with a larger theoretical capacity of 220 mAh g(-1) compared with commercialized LiFePO4 (170 mAh g(-1)). The main drawback of LFeB, however, is its poor specific discharge capacity as a cathode material for LIBs. Herein, the fluorine-substituted LFeB at the oxygen site, LiFeBO3-xF2x (LFeBF, x = 0.05, 0.1, 0.2, 0.3, and 0.5), has been prepared as a cathode material for LIBs via a solid-state reaction to improve the electrochemical behavior accompanied by phase transition. Morphological change as increasing x and well-distributed fluorine element of LFeBF have been observed using a scanning electron microscope combined with an energy dispersive X-ray spectrometer. X-ray diffraction, X-ray photoelectron spectroscopy, and solid-state Li-7 and B-11 nuclear magnetic resonance spectroscopy studies of LFeBF as well as increasing x show a dramatic phase transition from monoclinic to vonsenite-type structure. The plausible atomic arrangement has been also investigated using density functional theory. Furthermore, the fluorine substitution at the oxygen site of LFeB leads to a remarkable improvement in discharge capacity, the highest value (361.15 mAh g(-1) for LFeBF (x = 0.3)) of which is about five times larger than that of LFeB (73.43 mAh g(-1)) at 0.05 C rate, without any additional carbon source. (C) 2020 Elsevier Ltd. All rights reserved. | - |
dc.identifier.bibliographicCitation | Electrochimica Acta, v.367, pp.137364 | - |
dc.identifier.doi | 10.1016/j.electacta.2020.137364 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.scopusid | 2-s2.0-85096367818 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/49285 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0013468620317576?via%3Dihub | - |
dc.identifier.wosid | 000607621500011 | - |
dc.language | 영어 | - |
dc.publisher | Pergamon Press Ltd. | - |
dc.title | Phase transition-induced improvement in the capacity of fluorine-substituted LiFeBO3 as a cathode material for lithium ion batteries | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Fluorine-substituted LiFeBO3 Vonsenite Solid-state NMR Density functional theory calculations Cathode material for lithium ion battery | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PERFORMANCEPOSITIVE-ELECTRODECRYSTAL-STRUCTUREDOPED LIFEPO4/CBEHAVIORSYSTEM | - |
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