Facile Hydrothermal Synthesis of Molybdenum Disulfide (MoS 2 ) as Advanced Electrodes for Super Capacitors Applications
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Facile Hydrothermal Synthesis of Molybdenum Disulde (MoS2) as Advanced Electrodes for Super Capacitors Applications H. Adhikari, C. Ranaweera, R. Gupta and S. R. Mishra MRS Advances / FirstView Article / July 2016, pp 1 - 9 DOI: 10.1557/adv.2016.421, Published online: 07 June 2016
Link to this article: http://journals.cambridge.org/abstract_S2059852116004217 How to cite this article: H. Adhikari, C. Ranaweera, R. Gupta and S. R. Mishra Facile Hydrothermal Synthesis of Molybdenum Disulde (MoS2) as Advanced Electrodes for Super Capacitors Applications. MRS Advances, Available on CJO 2016 doi:10.1557/adv.2016.421 Request Permissions : Click here
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MRS Advances © 2016 Materials Research Society DOI: 10.1557/adv.2016.421
Facile Hydrothermal Synthesis of Molybdenum Disulfide (MoS2) as Advanced Electrodes for Super Capacitors Applications H. Adhikari1, C. Ranaweera2, R. Gupta2, and S. R. Mishra1 1. Department of Physics, The University of Memphis, Memphis, TN 38152, USA 2. Department of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USA ABSTRACT A facile hydrothermal method was used to synthesize molybdenum disulfide (MoS2) microspheres. The effect of hydrothermal reaction time on morphology and electrochemical properties of MoS2 microspheres was evaluated. X-ray diffraction showed presence of crystalline MoS2 structure, where content of crystalline phase was observed to increase with hydrothermal reaction time. Electrochemical properties of MoS2 were evaluated using cyclic voltammetry (CV) and galvanostatic charge-discharge in 3M KOH solution. Specific capacitance of nanostructured MoS2 was observed to be between 68 F/g and 346 F/g at different scan rates along with excellent cyclic stability. High power density (~1200 W/kg) and energy density (~5 Wh/kg) was observed for MoS2 sample synthesized for 24 hours of hydrothermal reaction time. Overall optimal electrocapactive performance was observed for sample prepared for 24 hours of reaction time. It is demonstrated that the obtained MoS2 microspheres with three-dimensional architecture has excellent electrochemical performances as electrode materials for supercapacitor applications. INTRODUCTION Recently supercapacitors have attracted a great deal of attention due to their features such as high power density, fast charging/discharging process, long cyclic stability, and small environmental impact, etc. [1]. Various transition metal oxide materials, such as RuO2, MnO2, NiO etc. have been explored in recent years. Besides transition metal oxides, disulphides and phosphides are also emerging as a potential candidates for supercapacitive applications. Atomic layered transition-metal dichalcogenides, MoS2, has fascinating physical, chemical, and optical properties [2,3,4,5] and industrial wide application as solid lubricant, catalysis, dyesensitized
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