Citation: LI Mei-Juan, SHEN Shu-Yi, LUO Guo-Qiang, ZHANG Lian-Meng. Hydrothermal Synthesis of MoS₂ Flower-like Spheres with Electrochemical Performances[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(9): 1521-1526. doi: 10.11862/CJIC.2017.201 shu

Hydrothermal Synthesis of MoS₂ Flower-like Spheres with Electrochemical Performances

1.
School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
2.
State key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

Corresponding author: LI Mei-Juan, meijuanli@whut.edu.cn
Received Date: 7 May 2017
Revised Date: 28 July 2017

Figures(8)

A simple but useful hydrothermal method is developed to prepare molybdenum disulfide (MoS₂) flower-like spheres by sodium molybdate dehydrate (Na₂MoO₄·2H₂O) and thiocarbamide (CS(NH₂)₂). In this work, the appropriate hydrothermal condition is at 180℃ reaction temperature for 48 h and the atomic ratio of S and Mo is 1:4 in 0.001 mol·L^-1 aqueous solution. The morphologies and microstructures of as-prepared MoS₂ are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and specific surface area test method (BET). Results indicate that the average diameter of as-prepared products is about 1 μm with good crystallinity and dispersibility, and their specific surface area is about 87 m²·g^-1. In order to character the electrical properties of MoS₂, the electrochemical performance was studied by cyclic voltammetry (CV), galvanostatic charge-discharge cycling (GCD) and electrochemical impedance spectroscopy (EIS). Analysis results show that in 3 mol·L^-1 KOH electrolyte, the specific capacitance of single electrode is 130.6 F·g^-1 at 5 mV·s^-1 scan rate and 110.9 F·g^-1 at 0.1 A·g^-1 current density. The charge-transfer resistance (R_ct) is of 0.33 Ω. The loss of specific capacitance is 14.7% after 1 000 cycles. These electric properties illustrate the MoS₂ prepared by hydrothermal processing can act as an ideal material for supercapacitor electrode.
- molybdenum disulfide,
- hydrothermal method,
- electrochemical performances
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沈阳化工大学材料科学与工程学院沈阳 110142

Hydrothermal Synthesis of MoS2 Flower-like Spheres with Electrochemical Performances

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通讯作者: 陈斌, bchen63@163.com

Hydrothermal Synthesis of MoS₂ Flower-like Spheres with Electrochemical Performances