Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 11, Issue 10, Pages 8155-8162Publisher
ESG
DOI: 10.20964/2016.10.41
Keywords
Hydrothermal Method; Optical Properties; Transition metal oxides; Supercapacitance; Electrochemical properties
Categories
Funding
- National Key Scientific Instruments and Equipment Development Special Fund, China [2011YQ14014506, 2011YQ14014507]
- University of Science and technology Beijing (fundamental development and Chinese Government Scholarship program)
- fundamental Research Funds for the Central Universities: Chinese government scholarship program
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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.
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