Investigations of the capacity fading mechanism of Na0.44MnO2via ex situ XAS and magnetization measurements

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dc.authoridDemirel, Serkan/0000-0003-1158-4956
dc.authoridALTIN, Serdar/0000-0002-4590-907X
dc.authoridOz, Erdinc/0000-0003-4321-8264
dc.authoridAltin, Emine/0000-0002-2187-4036
dc.authoridSahinbay, Sevda/0000-0002-5482-4772
dc.authorwosidSahinbay, Sevda/Q-7698-2018
dc.authorwosidOz, Erdinc/GXW-0937-2022
dc.authorwosidbayri, ali/AAA-5966-2021
dc.authorwosidALTIN, EMINE/AHE-9774-2022
dc.authorwosidDemirel, Serkan/AAA-2133-2020
dc.authorwosidALTIN, Serdar/H-4880-2014
dc.contributor.authorAltin, Serdar
dc.contributor.authorOz, Erdinc
dc.contributor.authorAltin, Emine
dc.contributor.authorDemirel, Serkan
dc.contributor.authorBayri, Ali
dc.contributor.authorAvci, Sevda
dc.date.accessioned2024-08-04T20:45:34Z
dc.date.available2024-08-04T20:45:34Z
dc.date.issued2018
dc.departmentİnönü Üniversitesien_US
dc.description.abstractNa-ion batteries represent a promising complementary alternative to Li-ion batteries due to their high energy density and natural abundancy of Na. However, these batteries have short cycle life and extensive research activities on these batteries are required to understand the mechanism of such drawbacks. In this report, we investigate the capacity fading mechanism of Na(0.44)MnO(2)via ex situ X-ray diffraction, X-ray absorption spectroscopy, Fourier transform infrared spectroscopy and magnetization measurements. Our results show that the unit cell volume, the effective mass of Mn-O bonds, the number of Mn4+ ions and the effective magnetic moment decrease upon repeated cycling. We propose that some Mn4+ ions in the octahedral environment become Mn3+ ions in a square pyramidal environment, causing oxygen release upon cycling. Any free oxygen in the battery is expected to react with the electrolyte and cause capacity fade.en_US
dc.description.sponsorshipEU-H2020 research and the innovation program [654360]; Inonu University Research Council [BAP-FDK-2017-678]; Ankara University Institute of Accelerator Technologies TARLA project [2006K-120470]en_US
dc.description.sponsorshipThis project has received funding from the EU-H2020 research and the innovation program under grant agreement No. 654360 having benefitted from the access provided by SOLEIL in France and by ICMAB-CSIC in Barcelona within the framework of the NFFA-Europe Transnational Access Activity. The project was also supported by Inonu University Research Council with the contract number of BAP-FDK-2017-678. Erdinc Oz was supported by Ankara University Institute of Accelerator Technologies TARLA project (project no. 2006K-120470).en_US
dc.identifier.doi10.1039/c8dt03508c
dc.identifier.endpage17108en_US
dc.identifier.issn1477-9226
dc.identifier.issn1477-9234
dc.identifier.issue47en_US
dc.identifier.pmid30465666en_US
dc.identifier.scopus2-s2.0-85058156618en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage17102en_US
dc.identifier.urihttps://doi.org/10.1039/c8dt03508c
dc.identifier.urihttps://hdl.handle.net/11616/98566
dc.identifier.volume47en_US
dc.identifier.wosWOS:000452112100030en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherRoyal Soc Chemistryen_US
dc.relation.ispartofDalton Transactionsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSodium-Ion Batteriesen_US
dc.subjectManganese Oxideen_US
dc.subjectCathode Materialen_US
dc.subjectNa0.44mno2en_US
dc.subjectCrystalen_US
dc.subjectElectrodesen_US
dc.subjectNanowiresen_US
dc.titleInvestigations of the capacity fading mechanism of Na0.44MnO2via ex situ XAS and magnetization measurementsen_US
dc.typeArticleen_US

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