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.accessioned2024-07-18T12:01:00Z
dc.date.available2024-07-18T12:01:00Z
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 (alpha-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.
dc.identifier.issn0040-6090
dc.identifier.other1879-2731
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/8110
dc.language.isoEnglish
dc.publisherELSEVIER SCIENCE SA
dc.subjectIMPEDANCE
dc.subjectMNO2
dc.subjectELECTROLYTES
dc.subjectSTATE
dc.subjectSPECTROSCOPY
dc.subjectPERFORMANCE
dc.subjectNANOSHEETS
dc.subjectREDOX
dc.titleCharge transport kinetics in flower like α-MnO2 nano-sheet and α-MnO2 nanowire based supercapacitors
dc.typeArticle

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