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Energy storage in composites of a redox couple host and a lithium ion host

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dc.contributor.authorKim, Sung-Wook-
dc.contributor.authorNam, Kyung-Wan-
dc.contributor.authorSeo, Dong-Hwa-
dc.contributor.authorHong, Jihyun-
dc.contributor.authorKim, Hyungsub-
dc.contributor.authorGwon, Hyeokjo-
dc.contributor.authorKang, Kisuk-
dc.date.accessioned2020-04-25T08:18:12Z-
dc.date.available2020-04-25T08:18:12Z-
dc.date.issued2012-06-
dc.identifier.citationNano Today, Vol.7 No.3, pp.168-173-
dc.identifier.issn1748-0132-
dc.identifier.other92884-
dc.identifier.urihttp://hdl.handle.net/10371/165146-
dc.description.abstractThe quest for new positive electrodes for rechargeable lithium-ion batteries has been escalating in recent years. Until now, candidates of positive electrode were limited to crystals that contain both redox-active element (usually transition-metal) and lithium ion in the open framework with few exceptions. Here, we demonstrate lithium-free compounds, a material with little activity by itself, can be activated electrochemically by addition of LiF after the first charging. This general strategy is exemplified in various lithium-free iron compounds. Reversible lithium ion extraction and reinsertion take place for Fe2+F2, Fe2+ SO4, and Fe22+P2O7, when blended with LiF in nanoscale, in which a simultaneous valence change of Fe2+/3+ occurs above 3 V. FeF2-LiF could deliver 190 mAh g(-1) (similar to 3.53 V) at 50 mA g(-1) which is even higher energy density than that crystalline LiFePO4 can offer. Various combinations of blending are possible using this approach, which can bring a new branch of material group for positive electrodes in lithium-ion batteries. (C) 2012 Elsevier Ltd. All rights reserved.-
dc.subjectEnergy storage-
dc.subjectLi -ion batteries-
dc.subjectElectrochemistry-
dc.subjectPositive electrode-
dc.subjectComposite materials-
dc.titleEnergy storage in composites of a redox couple host and a lithium ion host-
dc.typeArticle-
dc.contributor.AlternativeAuthor강기석-
dc.identifier.doi10.1016/j.nantod.2012.04.004-
dc.citation.journaltitleNano Today-
dc.identifier.scopusid2-s2.0-84862018701-
dc.citation.endpage173-
dc.citation.number3-
dc.citation.startpage168-
dc.citation.volume7-
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S174801321200045X?via%3Dihub-
dc.identifier.rimsid92884-
dc.identifier.sci000306031800006-
dc.description.isOpenAccessN-
dc.contributor.affiliatedAuthorKang, Kisuk-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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