Electrochemical performance of mixed-phase 1T/2H MoS2 synthesized by conventional hydrothermal v/s microwave-assisted hydrothermal method for supercapacitor applications

Mixed-phase 1T/2H MoS2 has been receiving immense attention as an electrode material for supercapacitors due to the synergistic effects of both the phases. Herein, we synthesized mixed-phase 1T/2H MoS2 via two different techniques: conventional hydrothermal (HT) and microwave-assisted hydrothermal (...

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Bibliographic Details
Published in:Journal of alloys and compounds 2022-11, Vol.922, p.166194, Article 166194
Main Authors: Kour, Pawanpreet, Deeksha, Yadav, Kamlesh
Format: Article
Language:English
Subjects:
Diffraction patterns
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrode materials
Electrons
Energy storage
Hydrothermal
Microwave
Molybdenum disulfide
MoS2
Photoelectrons
Spectrum analysis
Supercapacitor
Supercapacitors
Synergistic effect
Synthesis
X ray spectra
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Summary:Mixed-phase 1T/2H MoS2 has been receiving immense attention as an electrode material for supercapacitors due to the synergistic effects of both the phases. Herein, we synthesized mixed-phase 1T/2H MoS2 via two different techniques: conventional hydrothermal (HT) and microwave-assisted hydrothermal (MHT) technique. The formation of MoS2 is confirmed through X-ray diffraction pattern, scanning electron microscopy, energy dispersive X-ray spectroscopy, Raman-spectra, and X-ray photoelectron spectra. The electrochemical performance of the two samples is investigated using cyclic voltammetry (CV), Gravimetric charging-discharging (GCD) and electrochemical impedance spectroscopy (EIS). MoS2 synthesized via MHT method (MS-MW) and HT method (MS-HT) deliver capacitances of 421 F g−1 and 742 F g−1 at 5 mV s−1, respectively. The energy density of MS-HT (57 Wh kg−1) is almost double than that of MS-MW (30 Wh kg−1). MS-HT also exhibited remarkable capacitance retention of 91% over 1200 cycles, compared with MS-MW. The results demonstrate that MoS2 synthesized by the hydrothermal method delivers superior electrochemical performance. •1T/2H MoS2 has been synthesized using conventional hydrothermal (MS-HT) and microwave-assisted hydrothermal methods (MS-MW).•The electrochemical performance of the two samples has been evaluated for supercapacitor applications.•MS-HT exhibited remarkable specific capacitance of 742 F g−1 at 5 mV s−1 in comparison to MS-MW (421 F g−1).•The energy density of MS-HT is almost twice that of MS-MW.•MS-HT acquired superior cyclic stability of about 91 %, after 1200 cycles.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2022.166194