Transition Metal Oxides (TMOs) Based Supercapacitors Applications

Abstract

Energy storage devices, such as supercapacitors, have replaced fuel cells, batteries, and traditional capacitors. Herein, a novel method is introduced to build supercapacitors from sodium hexa-titanates grown directly from a titanium dioxide (TiO2) substrate that has shown remarkable capacitance. Sodium hexa-titanates (Na2Ti6O13) nanostructures exhibit a high electrochemical surface area and unique structural properties. The research implements the use of electrochemical and characterization techniques. Furthermore, sodium hexa-titanates were investigated for supercapacitance by doping oxygen vacancies and modifying them with trace amounts of ruthenium (Ru) to form nanostructured composites. A hybrid-based nanostructure combines sodium hexa-titanate with Co3O4 nanoparticles to successfully create electrode materials. An electrochemical reduction method was used to induce oxygen vacancies into the lattice structure of Ti/Na2Ti6O13 nanocomposites and enhance electrochemical and pseudo-capacitance properties. Thus, sodium hexa-titanates have great potential to build the next generation of supercapacitors.