Assessment on the stable and high capacity Na-Se batteries with carbonate electrolytes

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dc.authorid0000-0001-5084-6061
dc.contributor.authorErdöl, Zeynep
dc.contributor.authorAta, Ali
dc.contributor.authorÇakan, Rezan Demir
dc.date.accessioned2022-11-10T07:51:17Z
dc.date.available2022-11-10T07:51:17Z
dc.date.issued2022
dc.departmentTAÜ, Fen Fakültesi, Malzeme Bilimi ve Teknolojileri Bölümüen_US
dc.description.abstractFactors affecting proper functioning of Na-Se system are investigated focusing on the polyselenide formation in ether- and carbonate-based electrolytes. To do so, Se cathode is prepared by ball milling with commercial carbon and selenium powders. It is revealed that the soluble polyselenide species form in ether while no signature in carbonates proven by the in-situ cyclic voltammetry and ex-situ ultraviolet-visible spectroscopy measurements as well as monitoring self-discharge behaviours. Different Se discharge mechanism is also highlighted by staircase potentio electrochemical impedance spectroscopy (SPEIS) that is an impedance measurement applied to each potential step. Volume expansion is targeted using different types of binders in which carboxyl methylcellulose-styrene butadiene rubber (CMC-SBR) delivers the highest reversible capacity and the best rate performance resulting from its high adhesion strength. To further improve the performances, fluoroethylene carbonate (FEC) is used as a film forming additive that preserves Na metal integrity proven by the Na-Na symmetric cells and voltage relaxation upon cycling. As a whole, binders and electrolyte compositions are found to be the two crucial factors to obtain stable and high-capacity Na-Se cells. This study underlines that much effort needs to be put on the strategies to overcome volume expansion than that of Se confinement into porous cathode.
dc.identifier.citationErdöl, Z., Ata, A., & Çakan, R. D. (2022). Assessment on the Stable and High?Capacity Na? Se Batteries with Carbonate Electrolytes. ChemElectroChem, 9(15), e202200465.
dc.identifier.doi10.1002/celc.202200465
dc.identifier.issue15en_US
dc.identifier.scopus2-s2.0-85134014426
dc.identifier.scopusqualityN/A
dc.identifier.urihttps://hdl.handle.net/20.500.12846/678
dc.identifier.volume9en_US
dc.identifier.wosWOS:000823688200001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorErdöl, Zeynep
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofChemElectroChem
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBinderen_US
dc.subjectCarbonate Electrolytesen_US
dc.subjectEther Electrolytesen_US
dc.subjectKarbonat Elektrolitleren_US
dc.subjectEter Elektrolitlerien_US
dc.subjectBindemittelen_US
dc.subjectKarbonat Elektrolyteen_US
dc.subjectEther Elektrolyteen_US
dc.titleAssessment on the stable and high capacity Na-Se batteries with carbonate electrolytes
dc.typeArticle

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