Charge transport kinetics in flower like α-MnO2 nano-sheet and α-MnO2 nanowire based supercapacitors
| dc.contributor.author | Kiymaz D. | |
| dc.contributor.author | Kiymaz A. | |
| dc.contributor.author | Tekoglu S. | |
| dc.contributor.author | Mayr F. | |
| dc.contributor.author | Dincalp H. | |
| dc.contributor.author | Zafer C. | |
| dc.date.accessioned | 2025-04-10T11:04:13Z | |
| dc.date.available | 2025-04-10T11:04:13Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | In 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-ID | 10.1016/j.tsf.2022.139535 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14701/45231 | |
| dc.publisher | Elsevier B.V. | |
| dc.title | Charge transport kinetics in flower like α-MnO2 nano-sheet and α-MnO2 nanowire based supercapacitors | |
| dc.type | Article |