Charge transport kinetics in flower like α-MnO2 nano-sheet and α-MnO2 nanowire based supercapacitors

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dc.contributor.authorKiymaz D.
dc.contributor.authorKiymaz A.
dc.contributor.authorTekoglu S.
dc.contributor.authorMayr F.
dc.contributor.authorDincalp H.
dc.contributor.authorZafer C.
dc.date.accessioned2024-07-22T08:03:43Z
dc.date.available2024-07-22T08:03:43Z
dc.date.issued2022
dc.description.abstractIn a supercapacitor, determining the cells’ internal dynamics and limiting factors on the efficiency is essential for device designs. In this context, electrochemical impedance spectroscopy is a powerful tool in investigating device kinetics. This study explained the performance improvement in nanostructured MnO2 electrodes from a diffusion perspective. Firstly, we reported morphological features of flower-like nanosheet MnO2 and nanowire MnO2 with identical crystal structure (α-MnO2 phase) and capacitance-voltage properties. Then, the factors limiting the bias voltage-dependent capacitance efficiency were explained via electrochemical impedance spectroscopy by setting up a three-electrode system. Both resistance and capacitance vs. frequency plots provided important information on ion diffusion and charge transfer mechanisms. © 2022 Elsevier B.V.
dc.identifier.DOI-ID10.1016/j.tsf.2022.139535
dc.identifier.issn00406090
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12406
dc.language.isoEnglish
dc.publisherElsevier B.V.
dc.subjectCapacitance
dc.subjectCharge transfer
dc.subjectCrystal structure
dc.subjectEfficiency
dc.subjectElectrochemical electrodes
dc.subjectElectrochemical impedance spectroscopy
dc.subjectManganese oxide
dc.subjectNanowires
dc.subjectSupercapacitor
dc.subjectChemical solution deposition
dc.subjectDevice design
dc.subjectElectrochemical-impedance spectroscopies
dc.subjectHollandites
dc.subjectInternal dynamics
dc.subjectMorphological features
dc.subjectNano sheet
dc.subjectNano-structured
dc.subjectPerformance
dc.subjectTransport kinetic
dc.subjectNanosheets
dc.titleCharge transport kinetics in flower like α-MnO2 nano-sheet and α-MnO2 nanowire based supercapacitors
dc.typeArticle

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