Microwave assisted hydrothermal synthesis of MoS2/SnO2 nanocomposites for use in supercapacitors

6^th International Conference and Exhibition on Materials Science and Engineering

September 12-14, 2016 Atlanta, USA

Nguyen Thi Xuyen and Jyh Ming Ting

National Cheng Kung University, Taiwan

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Two�dimensional (2D) transition metal dichalcogenide materials attracts a huge attention for application energy storage devices due to its unique nano-construction and electronic properties. In this study, molybdenum disulfide (MoS2), flower-like particles consisting of 2D nanosheets, have been synthesized using a microwave-assisted hydrothermal method under various conditions. The obtained materials were characterized for the material properties and then made into electrodes for supercapacitor assembly. The resulting supercapacitor was evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and a charge-discharge technique. The CV measurement showed that as-synthesized MoS2 electrode delivered a capacitance as high as 234 Fg-1 at a scan rate of 5 mV/s in KCl aqueous electrolyte. MoS2 electrode also exhibited excellent electrochemical performance of high conductivity based on the EIS analysis. Further enhancement of the electrochemical performance has been achieved through the growth of SnO2 nanoparticles on the MoS2. The SnO2, not only provided additional pseudo capacitance, but also served to further separate the 2D MoS2 nanosheets. The effect of materials� characteristics on the electrochemical performance is addressed.

Biography :

Email: nguyenxuyen1511@gmail.com