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정성균

Jung, Sung-Kyun
Energy Materials Research Lab.
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dc.citation.endPage 4397 -
dc.citation.number 12 -
dc.citation.startPage 4388 -
dc.citation.title NANO RESEARCH -
dc.citation.volume 10 -
dc.contributor.author Hwang, Insang -
dc.contributor.author Jung, Sung-Kyun -
dc.contributor.author Jeong, Eun-Suk -
dc.contributor.author Kim, Hyunchul -
dc.contributor.author Cho, Sung-Pyo -
dc.contributor.author Ku, Kyojin -
dc.contributor.author Kim, Hyungsub -
dc.contributor.author Yoon, Won-Sub -
dc.contributor.author Kang, Kisuk -
dc.date.accessioned 2023-12-21T21:18:08Z -
dc.date.available 2023-12-21T21:18:08Z -
dc.date.created 2021-06-03 -
dc.date.issued 2017-12 -
dc.description.abstract Na-ion batteries (NIBs) are considered one of the most attractive alternatives for Li-ion batteries (LIBs) because of the natural abundance of Na and the similarities between the NIB technology and the well-established LIB technology. However, the discovery of high-performance electrode materials remains a key factor in the success of NIBs. Herein, we propose a new type of cathode material for NIBs based on a nanocomposite of an alkali metal fluoride (NaF) and a transition metal fluoride (FeF2). Although neither of these components is electrochemically active with Na, the nanoscale mixture of the two can deliver a reversible capacity of similar to 125 mAh/g in the voltage range of 1.2-4.8 V vs. Na/Na+ via an Fe2+/Fe3+ redox couple. X-ray absorption spectroscopy reveals that the reversible Na storage is aided by the F-ions due to the decomposition of NaF, which are absorbed on the surface of FeF2, promoting the redox reaction of Fe and triggering the gradual transformation of the mother structure (FeF2) into a new (FeF3-like) host structure for the Na ions. This unique Na-ion storage phenomenon, which is reported for the first time, will introduce an avenue for designing novel cathode materials for NIBs. -
dc.identifier.bibliographicCitation NANO RESEARCH, v.10, no.12, pp.4388 - 4397 -
dc.identifier.doi 10.1007/s12274-017-1538-y -
dc.identifier.issn 1998-0124 -
dc.identifier.scopusid 2-s2.0-85019764815 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/53089 -
dc.identifier.wosid 000417196000029 -
dc.language 영어 -
dc.publisher TSINGHUA UNIV PRESS -
dc.title NaF-FeF2 nanocomposite: New type of Na-ion battery cathode material -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied -
dc.relation.journalResearchArea Chemistry; Science & Technology - Other Topics; Materials Science; Physics -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor nanocomposite -
dc.subject.keywordAuthor Na-ion batteries -
dc.subject.keywordAuthor NaF -
dc.subject.keywordAuthor FeF2 -
dc.subject.keywordAuthor cathode -
dc.subject.keywordPlus IONOTHERMAL SYNTHESIS -
dc.subject.keywordPlus ENERGY-STORAGE -
dc.subject.keywordPlus SODIUM -
dc.subject.keywordPlus LI -
dc.subject.keywordPlus FE -
dc.subject.keywordPlus EDGE -
dc.subject.keywordPlus MN -
dc.subject.keywordPlus ELECTRODES -
dc.subject.keywordPlus FLUORIDES -
dc.subject.keywordPlus MECHANISM -

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