Abstract
Manganese oxide film for supercapacitor applications was prepared by potentiodynamic electrodeposition in a manganese acetate plating solution. The effects of the potential sweep rate on the oxide microstructure, crystallinity, and chemical states were examined using a scanning electron microscope, an X-ray diffractometer, and an X-ray photoelectron spectrometer, respectively. Electrochemical performance of the film electrodes was evaluated using a cyclic voltammetric measurement. The experimental results indicate that the deposition potential sweep rate significantly affected the material properties of the prepared oxide films. The oxide-specific capacitance increased from 262 to 337 F/g when the sweep rate was increased from 100 to 400 mV/s. The key material factors that govern the specific capacitance and cyclic stability of the oxide electrodes were discussed.
Original language | English |
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Pages (from-to) | 1697-1703 |
Number of pages | 7 |
Journal | Journal of Solid State Electrochemistry |
Volume | 14 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2010 Sept 1 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics
- Electrochemistry
- Electrical and Electronic Engineering