Tri-Ethanolamine-Ethoxylate assisted hydrothermal synthesis of nanostructured MnCo2O4 with superior electrochemical performance for high energy density supercapacitor application

Tri-ethanolamine-ethoxylate assisted hydrothermal method has been adopted for synthesis of MnCo2O4 nanostructures. The XRD pattern reveals the successful synthesis and spinel FCC structure of as-synthesized MnCo2O4. The spherical morphology of as-synthesized nanostructured MnCo2O4 has been analyzed by FE-SEM analysis. The cyclic voltammetry and the galvonostatic charge discharge analysis of the as-fabricated MnCo2O4 electrode revealed excellent electrochemical performance in 1 mol L-1 Na2SO4 liquid electrolyte in aqueous solution. The nanostructured MnCo2O4 demonstrated highest specific capacitance of 2014 Fg(1) at a current density 5 Ag (1) and high energy density of 102Wh kg(1). Moreover, nanostructured MnCo2O4 shows low values of electrolyte resistance and charge-transfer resistance. Thus, these excellent electrochemical properties demonstrated by as-synthesized MnCo2O4 nanostructures reveals that these are the promising electrode material for high energy density supercapacitor application. (C) 2020 Elsevier Ltd. All rights reserved.