Fabrication of rGO/SrSeO₄ nanocomposite as an electrode material with enhanced specific power for supercapacitor applications

Abstract

Fossil fuels are the major source of energy in the world, which are being depleted day by day. Fossil fuels are also polluting the environment by releasing greenhouse gases such as carbon dioxide. To overcome environmental pollution as well as energy crisis, exploration of new ways of storing energy is the need of the time. In the presented work, reduced graphene oxide/Strontium selenate nanocomposite has been synthesized as an electrode material for energy storage devices. The structure of rGO/ SrSeO 4 nanocomposite was confirmed by x-ray diffraction while the morphology was investigated by scanning electron microscopy. The electrochemical measurements, such as cyclic voltammetry, galvanostatic charge/discharge, electrochemical impedance spectroscopy and cyclic stability, were also carried out. The synthesized nanocomposite showed excellent specific power of 684.16 W/kg with 3.67 Wh/kg specific energy, which is significantly much better than already reported metal selenide materials.

Facile Hydrothermal Synthesis of Visible‐Light‐Driven MnS/rGO Nanocomposite for Photocatalytic Degradation of Methylene Blue Dye

“…In the end, it was dried in an oven at 75 °C for 24 h to get the powder of rGO. [41] Synthesis of MnS: MnS was synthesized via the hydrothermal method; first, 0. After stirring, we added the already fabricated GO (0.5 g) and stirred the solution vigorously for 10 min.…”

Dielectric and electrochemical performance of rhombohedral lanthanum manganite perovskite nanostructures

“…The charge is stored in EDLCs at the interface between the electrode and the electrolyte without any electrochemical reaction (non-faradaic) while pseudocapacitors store charge on the surface of the electrode through a redox reaction between the electrode and the electrolyte (faradaic). Carbon-based materials are used in the former while the latter generally uses metal oxides, 2 sulphides 3,4 and selenides 5,6 as electrode materials. As the electrochemical properties of a supercapacitor are mainly based on the nature and type of the electrode materials, researchers are mostly focused on finding better electrode materials.…”