Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 14, Issue 9, Pages 7250-7254Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2014.8929
Keywords
Supercapacitor; MoS2; Specific Capacitance; Pseudocapacitance
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Funding
- research fund for the youth of Zhanjiang Normal University [QL0909]
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Flower-like MoS2 nanospheres were synthesized by a hydrothermal route. The structure and surface morphology of the as-prepared MoS2 was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The supercapacitive behavior of MoS2 in 1 M KCI electrolyte was studied by means of cyclic voltammetry (CV), constant current charge-discharge cycling (CD) and electrochemical impedance spectroscopy (EIS). The XRD results indicate that the as-prepared MoS2 has good crystallinity. SEM images show that the MoS2 nanospheres have uniform sizes with mean diameter about 300 nm. Many nanosheets growing on the surface make the MoS2 nanospheres to be a flower-like structure. The specific capacitance of MoS2 is 122 F . g(-1) at 1 A . g(-1) or 114 F . g(-1) at 2 my s(-1). All the experimental results indicate that MoS2 is a promising electrode material for electrochemical supercapacitors.
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