Preparation of Few-Layered MoS2 by One-Pot Hydrothermal Method for High Supercapacitor Performance

Molybdenum disulfide (MoS2), a typical layered material, has important applications in various fields, such as optoelectronics, catalysis, electronic devices, sensors, and supercapacitors. Extensive research has been carried out on few-layered MoS2 in the field of electrochemistry due to its large s...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2024-06, Vol.14 (11), p.968
Main Authors: Jia, Qingling, Wang, Qi, Meng, Lingshuai, Zhao, Yujie, Xu, Jing, Sun, Meng, Li, Zijian, Li, Han, Chen, Huiyu, Zhang, Yongxing
Format: Article
Language:English
Subjects:
Alkali metals
Capacitance
Catalysis
Electrochemical analysis
Electrochemistry
Electrodes
Electrolytes
Electron transport
Electronic equipment
Energy storage
Exfoliation
few layer
Metal ions
Molybdenum
Molybdenum disulfide
Morphology
MoS2
one-pot hydrothermal
Optoelectronics
Scanning electron microscopy
Sodium
Spectrum analysis
supercapacitor performance
Supercapacitors
Transmission electron microscopy
Two dimensional materials
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Summary:Molybdenum disulfide (MoS2), a typical layered material, has important applications in various fields, such as optoelectronics, catalysis, electronic devices, sensors, and supercapacitors. Extensive research has been carried out on few-layered MoS2 in the field of electrochemistry due to its large specific surface area, abundant active sites and short electron transport path. However, the preparation of few-layered MoS2 is a significant challenge. This work presents a simple one-pot hydrothermal method for synthesizing few-layered MoS2. Furthermore, it investigates the exfoliation effect of different amounts of sodium borohydride (NaBH4) as a stripping agent on the layer number of MoS2. Na+ ions, as alkali metal ions, can intercalate between layers to achieve the purpose of exfoliating MoS2. Additionally, NaBH4 exhibits reducibility, which can effectively promote the formation of the metallic phase of MoS2. Few-layered MoS2, as an electrode for supercapacitor, possesses a wide potential window of 0.9 V, and a high specific capacitance of 150 F g−1 at 1 A g−1. This work provides a facile method to prepare few-layered two-dimensional materials for high electrochemical performance.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano14110968