超级电容器
拉曼光谱
材料科学
电化学
傅里叶变换红外光谱
水平扫描速率
透射电子显微镜
电极
电容
化学工程
纳米技术
循环伏安法
化学
光学
物理化学
工程类
物理
作者
Kumuthini Rajendran,N. Ponpandian,Helen Annal Therese
标识
DOI:10.1002/pssa.202200203
摘要
Transition metal chalcogenides with 1D crystal structures such as FeS 2 , NiS 2 , CoS 2 , and VS 4 have sparked significant investigation because of their fascinating physical, chemical, and electrochemical characteristics. VS 4 , a quasi‐1D linear chain‐like structure with good electrochemical behavior, has piqued the curiosity of many researchers in recent years. The synthesis of the pristine form of VS 4 as well as its electrochemical behavior for supercapacitor (SC) applications is presented here. The vanadium tetrasulfide (VS 4 ) nanosheets are synthesized in larger quantities using a simple, template free, and scalable one‐pot hydrothermal process. The physicochemical properties of the VS 4 were studied using X‐ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and high‐resolution transmission electron microscopic analysis. The electrochemical performance of the material is investigated as an electrode for SCs. The electrode exhibits the maximum capacitance of 215 F g −1 at the scan rate of 5 mV s −1 with the capacitance retention of 82% for 2000 cycles.
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