1. Preparation of Few-Layered MoS 2 by One-Pot Hydrothermal Method for High Supercapacitor Performance.
- Author
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Jia, Qingling, Wang, Qi, Meng, Lingshuai, Zhao, Yujie, Xu, Jing, Sun, Meng, Li, Zijian, Li, Han, Chen, Huiyu, and Zhang, Yongxing
- Subjects
SUPERCAPACITOR performance ,ALKALI metal ions ,SUPERCAPACITORS ,ELECTRON transport ,SUPERCAPACITOR electrodes ,SODIUM borohydride ,MOLYBDENUM disulfide ,ALKALI metals - Abstract
Molybdenum disulfide (MoS
2 ), 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. [ABSTRACT FROM AUTHOR]- Published
- 2024
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