Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: June 3, 2024

The increasing need for electrode materials exhibiting improved performance to meet the requirements of supercapacitors is on rise. Hybrid electrodes, which combine reduced graphene (RGO) oxide with transition metal-based oxides such as cobalt (CoO), have emerged promising due their impressive specific capacitance and cost-effectiveness, attributed synergistic properties. In present study, a binder-free RGOCoO composite was synthesized using facile, fast, simple one-step co-precipitation method. This done improve stability supercapacitor applications. underwent comprehensive characterization utilizing various surface analytical techniques, including X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), field-emission scanning electron microscopy (FE-SEM), fourier-transform infrared (FTIR), Brunauer–Emmett–Teller (BET) analysis. Electrochemical measurements fabricated hybrid revealed at current density 2 A cm^{− 2} 132.3 mF 2, an 95.91% retention after 7000 cycles. results from electrochemical impedance (EIS) highlighted meager low relaxation time constant 0.53 s electrode. reason behind this can be linked interactions, minimal charge transfer resistance exhibited by porous without binders. innovative synthesis represents significant advancement in development high-efficiency diverse large-scale

Language: Английский