Synthesis and Characterization of Zinc Vanadate Nanostructures for Supercapacitor Applications

Abstract

A simple hydrothermal approach was used to successfully produce nanostructured Zinc vanadate (Zn3V2O8), which was calcined at 450 ℃. The structural, optical and surface morphological features of calcined Zn3V2O8 nanoparticles were investigated using a variety of analytical techniques. The produced Zn3V2O8 nanoparticles had an orthorhombic crystalline structure, with an average crystallite size of 35.14 nm, according to the X-ray diffraction pattern (XRD). Transmission electron microscopy (TEM) analysis evaluated the spherical shaped Zn3V2O8 nanoparticles. The calcined catalyst was characterized by Fourier Transform-Infrared spectroscopy (FT-IR) analysis to analyse bonding interactions between the metal fragments within the composites. The nanoparticles obtained from hydrothermal synthesis were of size 37.2 nm, and the zeta-potential of nanoparticles was found to be −25.4 mV, indicating excellent dispersion and stability. The spectrophotometer was used to analyse the UV-Vis diffuse reflectance spectra (DRS). Cyclic voltammetry and electrochemical impedance spectroscopy were used to study the electrochemical behavior of Zn3V2O8 nanostructures. The specific capacitance value of the synthesized nanoparticles was 248.5 Fg−1. The active composite material was exploited as an electrode for the Supercapacitor application, and it revealed that synthesized Zn3V2O8 nanoparticles might lead to a possible application for future energy storage technologies.
 HIGHLIGHTS
 
 Zinc vanadate nanostructures have been prepared using easy and economical hydrothermal technique and are explored for supercapacitor application
 Electrochemical behaviour of zinc vanadate nanostructures were investigated by cyclic voltammetry, electrochemical impedance spectroscopic analysis and galvano static charge discharge analysis
 This zinc vanadate nanostructures exhibited a maximum specific capacitance of 248.5 F g−1 in the HCl electrolyte
 It clearly revealed that synthesized nanoparticles may lead to potential application for forthcoming energy storage devices
 
 GRAPHICAL ABSTRACT

Nickel vanadate nitrogen-doped carbon nanocomposites for high-performance supercapacitor electrode

“…4 b showed that the strong and maximum intense XRD peaks at 35.73° and 44.07° attributed to (221) and (240) planes, respectively, attributed to the Ni 3 V 2 O 8 (JCPDS card No. 70–1394) [ 3 , 23 , 57 ]. It is well known that at a higher calcination temperature, the nickel-vanadium phase would transfer to other phases [ 58 ].…”

Exploring Zinc Vanadate/Cobalt Oxide (Zn3(VO4)2/CoO) Nano Hybrid Composites as Supercapacitors for Sustainable Energy Storage Applications

“…Their higher ionic conductivity and rapid proton mobility contribute to their lower internal resistance, rendering them desirable candidates [15]. Already the electrochemical behavior of a vanadium based-based mixed metal oxide compounds were investigated using the hydrothermal method, revealing its high reversibility and an energy storage capacity [16][17][18][19].…”

Hydrothermal synthesis and characterization of nanostructured nickel vanadate for supercapacitor and photocatalytic applications

“…Pseudocapacitive materials, mostly transition metal oxides and electrically conductive polymers, could reach the same energy density as batteries and the same cycle life and power density as EDLCs. RuO 2 , NiO, MnO 2 , and V 2 O 5 are all examples of transition metal oxides with high theoretical pseudocapacitance [12][13][14][15] due to their many oxidation states for oxidation and reduction. For their high theoretical specific capacity and outstanding electrochemical reversibility, vanadium-based materials were among the most promising electrode materials for use in supercapacitors.…”

“…Nickel, being the most recently discovered transition metal in the Earth's crust, forms the backbone of modern infrastructure. One family of mixed metal oxides (AxByOz) is the binary metal oxides, also known as transition metal vanadates (MxVyOz; M = Cu, Co, Ni, Zn, Fe) [16,17]. This sort of material has gained a lot of attention as an active electrode material in the field of pseudo-supercapacitors [18] because to its many oxidation states, layered structure, and synergistic interaction between the transition metal and vanadium.…”