Twisted nanocolumns for LIBs via phi-sweep method in ion assisted e-beam deposition

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dc.contributor.authorKarahan, Billur Deniz
dc.contributor.authorEryılmaz, Osman Levent
dc.contributor.authorAmine, Khalil M.
dc.contributor.authorKeleş, Özgül
dc.date.accessioned10.07.201910:49:13
dc.date.accessioned2019-07-10T19:50:29Z
dc.date.available10.07.201910:49:13
dc.date.available2019-07-10T19:50:29Z
dc.date.issued2018
dc.departmentİstanbul Medipol Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, İnşaat Mühendisliği Bölümü
dc.descriptionWOS: 000432670000021
dc.description.abstractIn this work, twisted nanostructured silicon-copper (with 19%at. copper) thin film is fabricated by glancing angle deposition phi-sweep process of ion beam assisted electron beam evaporation method. The thin film delivers 977 mAh g(-1) after 100 cycles, when cycled with 100 mA g(-1) rate and performs 280 mAh g(-1) at 2.5 A g(-1) rate. The morphological and the compositional particularities of the electrode might govern this noticeable cycle performance: Gaps among the nanostructures accommodate large volume changes and provide easy access to lithium ions for reacting with silicon to deliver high capacity. Plus, the direct connection of nanostructures to the current collector displays short lithium travelling distance promoting lithiation kinetic. Moreover, small intermetallics creating electronic conductive pathways enhance the reversibility. And finally, 5 min ion assisted deposition increases the adhesion of the film while avoiding possible delamination, hence quick failure of the electrode in the early stages of cycling.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [213M511]; Istanbul Technical University Scientific Research Project [37791]en_US
dc.description.sponsorshipThis work is a part of the research projects 213M511 (approved by The Scientific and Technological Research Council of Turkey (TUBITAK)) and 37791 (approved by Istanbul Technical University Scientific Research Project). The authors also thank Assist. Prof. Dr. Burak Ulgut, Dr. Robert Erck, Prof. Dr. Gultekin Goller, Prof. Dr. Mustafa Urgen, Tolga Alkan, Sevgin Turkeli, Huseyin Sezer, MSc Burcin Bilici, MSc Emre Cetintasoglu and Elif Cetintasoglu for their helps.en_US
dc.identifier.citationKarahan, B. D., Eryılmaz, O., Amine, K. ve Keleş, Ö. (2018). Twisted nanocolumns for LIBs via phi-sweep method in ion assisted e-beam deposition. Journal of Alloys and Compounds, 751, 170-175. https://dx.doi.org/10.1016/j.jallcom.2018.04.095
dc.identifier.doi10.1016/j.jallcom.2018.04.095
dc.identifier.endpage175
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopusqualityQ1
dc.identifier.startpage170
dc.identifier.urihttps://dx.doi.org/10.1016/j.jallcom.2018.04.095
dc.identifier.urihttps://hdl.handle.net/20.500.12511/1998
dc.identifier.volume751
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofJournal of Alloys and Compoundsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectGlancing Angle Deposition
dc.subjectSi Based Anode
dc.subjectStructured Thin Film Electrodes
dc.subjectElectron Beam Evaporation Method
dc.titleTwisted nanocolumns for LIBs via phi-sweep method in ion assisted e-beam deposition
dc.typeArticle

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