Elucidating the optimized P2 type Na0.67Mn1-xCuxO2 cathode active material via operando XAS

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dc.authorid0000-0002-5482-4772
dc.authorid0000-0002-3557-6769
dc.authorid0000-0002-4590-907X
dc.contributor.authorAltin, S.
dc.contributor.authorAltundag, S.
dc.contributor.authorAltin, E.
dc.contributor.authorVanpoucke, D. E. P.
dc.contributor.authorAvci, S.
dc.contributor.authorAtes, M. N.
dc.date.accessioned2025-05-10T19:50:03Z
dc.date.issued2023
dc.departmentİstanbul Medeniyet Üniversitesi
dc.description.abstractHere we report on the structural and electrochemical properties of P2-type Na0.67Mn1-xCuxO2 (where x = 0.20-0.50) via various techniques. X-ray diffraction (XRD) reveals a reduction of the unit cell volume upon substitution of Cu elucidated through detailed Rietveld analysis. The cyclic voltammetry (CV) behavior is also affected by the Cu substitution indicating new redox reactions stemming from Cu substitution. Galvanostatic cycling measurements at room temperature show that when x = 0.35 in a P2-type Na0.67Mn1-xCuxO2 cathode active material, the best electrochemical performance is obtained. The Na-ion diffusion rate is found to be strongly dependent upon the environmental temperature. Changes in the valence state and the local structures of P2-type Na0.67Mn1-xCuxO2 during the charge/discharge are in-vestigated through the operando X-ray absorption spectroscopy (XAS) technique. (c) 2022 Elsevier B.V. All rights reserved.
dc.description.sponsorshipInonu University Research Council [FBA -2019-1960]; TUBITAK under the prestigious award of TUBITAK 2232 program
dc.description.sponsorshipThe authors would like to thank Inonu University Research Council for project number FBA -2019-1960. The authors would like to thank Rock Beamline staff members in Soleil-France for the Operando XAS analysis and TENMAK for the financial support. M.N.A. greatly acknowledges the support from TUBITAK under the prestigious award of TUBITAK 2232 program.
dc.identifier.doi10.1016/j.jallcom.2022.168138
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopus2-s2.0-85143597273
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2022.168138
dc.identifier.urihttps://hdl.handle.net/20.500.14730/12233
dc.identifier.volume936
dc.identifier.wosWOS:000935575100001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250302
dc.subjectNa0
dc.subject67MnO2
dc.subjectCu-substitution
dc.subjectNa-ion
dc.subjectOperando XAS
dc.titleElucidating the optimized P2 type Na0.67Mn1-xCuxO2 cathode active material via operando XAS
dc.typeArticle

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