Supercapacitive properties of hydrothermally synthesized sphere like MoS{sub 2} nanostructures
- Nanomaterials and System Lab, Department of Mechanical Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)
- Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)
Highlights: • MoS{sub 2} nanostructures were synthesized by hydrothermal method. • Randomly stacked MoS{sub 2} was obtained. • FE-SEM studies show the sphere like morphology of MoS{sub 2}. • Specific capacitance of 92.85 F/g was achieved using charge–discharge analysis. • MoS{sub 2} electrode shows capacitance retention of about 93.8% after 1000 cycles. - Abstract: In this communication, we have investigated the supercapacitive behaviour of MoS{sub 2} nanostructures prepared by a facile one-pot hydrothermal approach using ammonium heptamolybdate and thiourea as starting materials. The X-ray diffraction study revealed the formation of randomly stacked layers of MoS{sub 2}. The field-emission scanning electron microscope studies suggested the formation of sphere like MoS{sub 2} nanostructures and a plausible mechanism for the formation of the obtained structure is discussed. The cyclic voltammetry study shows the typical rectangular shaped curves with a specific capacitance of 106 F/g at a scan rate of 5 mV/s. Galvanostatic charge–discharge measurements suggested the maximum specific capacitance of about 92.85 F/g at discharge current density of 0.5 mA/cm{sup 2}. Cyclic stability tests revealed the capacitance retention of about 93.8% after 1000 cycles suggesting a good cyclic capacity of the prepared MoS{sub 2}. The electrochemical impedance spectroscopic results such as Nyquist and Bode phase angle plots suggested that the hydrothermally synthesized MoS{sub 2} nanostructures will be a suitable candidate for electrochemical supercapacitor applications.
- OSTI ID:
- 22345246
- Journal Information:
- Materials Research Bulletin, Vol. 50; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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