Electrochemical properties of single-crystalline Mn3O4 nanostructures and their capacitive performance in basic electrolyte
| Autor: | Shah, H. U., Wang, F., Toufiq, A. M., Khattak, A. M., Iqbal, A., Ghazi, Z. A., Ali, S., Li, X., Wang, Z. |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Nanostructure
Materials science Optical properties Capacitive sensing Hydrothermal method Transition metal oxides 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Chemical engineering Electrochemical properties Supercapacitance 0210 nano-technology |
| Zdroj: | International Journal of Electrochemical Science |
| Popis: | Single-crystalline Mn3O4 square-shaped nanostructures have been successfully synthesized by hydrothermal method without using any surfactant. The as-prepared products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM) and High Resolution transmission electron microscopy (HRTEM). To assess the potential properties of nanostructures, galvanostatic charging-discharging and cyclic voltammetry measurements were performed for their use in supercapacitors. The Mn3O4 nanoarchitectures used as supercapacitor electrode in 1mol L-1 KOH electrolyte have a specific capacitance value of 355.5 F g-1 at a low current density of 0.35 A.g-1. The device still retain 85.08% of its initial capacitance afterwards 2000 cycles at a current density of 5 A.g-1. The as-synthesized Mn3O4 nanostructures exhibited a good rate capability and stability for electrochemical properties. These results indicate their potential application as electrode material for high performance supercapacitor in basic medium. |
| Databáze: | OpenAIRE |
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