One-pot synthesis of ultrahigh performance nanorod structured Co3O4@Fe2O3 anchored on a resonating 2D-carbon with high potential window and surface area for supercapacitors application

Herein we illustrate a rational scheme to construct nanorod structured Co3O4@Fe2O3-2DC working electrode for electrochemical capacitor applications. When analyzed as a supercapacitor electrode material, Co3O4@Fe2O3-2DC at 5 A/g delivered an optimum capacity retention of 96.7%, and a high specific capacitance of 2657.1 F/g at a marginal current density of 1 A/g. Co3O4@Fe2O3-2DC unparalleled electrochemical performance can be accredited to its unique morphology consigned with a high specific surface area of 532.8 m(2)/g, and the effect of synergy between single-layer practically defect free graphene, and the anchored cobalt and iron metal oxides. The electrode operated within a wide potential window, almost at the limit for aqueous electrolyte system (1.23 V), which makes it merit a high over-potential caption. These results validate Co3O4@Fe2O3-2DC to be considered as a favorable electrode material, for application in next-generation excellent performance supercapacitors.

Automated summary

The rational scheme for constructing nanorod structured Co3O4@Fe2O3-2DC working electrode demonstrates excellent electrochemical performance, with high specific capacitance, optimal capacity retention, and wide potential window. The unique morphology and synergy between graphene and anchored metal oxides contribute to its unparalleled performance in supercapacitor applications.