Investigation of Ti‐substitution effects on structural and electrochemical properties of Na0.67Mn0.5Fe0.5O2 battery cells

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buir.contributor.authorÖz, Erdinç
buir.contributor.authorHarfouche, M.
dc.citation.epage11806en_US
dc.citation.issueNumber11en_US
dc.citation.spage11794en_US
dc.citation.volumeNumber44en_US
dc.contributor.authorAltın, S.
dc.contributor.authorAltundağ, S.
dc.contributor.authorAltın, E.
dc.contributor.authorÖz, Erdinç
dc.contributor.authorHarfouche, M.
dc.contributor.authorBayri, A.
dc.date.accessioned2021-02-19T12:01:22Z
dc.date.available2021-02-19T12:01:22Z
dc.date.issued2020
dc.departmentDepartment of Chemistryen_US
dc.description.abstractTi‐substituted Na0.67Mn0.5Fe0.5O2 powders were fabricated by quenching at high temperatures, and the structural properties were investigated by Fourier transform infrared (FTIR), Scanning Electron Microscope (SEM), X‐ray powder diffraction (XRD), and X‐ray absorption spectroscopy (XAS) measurements. According to XRD analysis, it was not observed any impurity phases and it was found that the lattice constants of the powders were slightly increased by Ti content. The change in the valence state of both Mn and Fe ions was investigated by X‐ray absorption near edge structure (XANES), and it was found that Ti‐substitution caused a decrease in the valance state of Fe in Na0.67Mn0.5Fe0.5O2. Fourier transform (FT) of XANES showed that the local structure around the metal ions changed with the addition of Ti ions. The cycling voltammetry (CV) graphs of Ti‐substituted cells were almost the same as the pure sample, which may not change the cycling mechanism in the cells. According to galvanostatic cycling measurements at room temperature, the best performance was obtained with Ti‐substitution of 0.06 to 0.09 in the structure. The effect of environmental temperature in the battery cells was investigated at 10°C to 50°C, and it was found that the battery performance depends on the environmental temperatures.en_US
dc.description.sponsorshipInönü Üniversitesi, Grant/AwardNumber: FBA-2019-1857; TUBITAK,Grant/Award Number: 119M169; InonuUniversityen_US
dc.embargo.release2021-11-01
dc.identifier.doi10.1002/er.5820en_US
dc.identifier.issn0363-907X
dc.identifier.urihttp://hdl.handle.net/11693/75498
dc.language.isoEnglishen_US
dc.publisherWileyen_US
dc.relation.isversionofhttps://dx.doi.org/10.1002/er.5820en_US
dc.source.titleInternational Journal of Energy Researchen_US
dc.subjectNa ionen_US
dc.subjectNa0.67Mn0.5Fe0.5O2en_US
dc.subjectTi-substitutionen_US
dc.titleInvestigation of Ti‐substitution effects on structural and electrochemical properties of Na0.67Mn0.5Fe0.5O2 battery cellsen_US
dc.typeArticleen_US

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