Template-free synthesis of 2D-pristine VS${}_4$ nanosheets for supercapacitor applications

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. (© 2022 Wiley‐VCH GmbH)