Synergistic optimization of nanostructured graphene oxide based ternary composite for boosting the performance of supercapacitor electrode material via response surface methodology

Abstract

Energy storage and environmental pollution are currently the two main issues facing the world. In light of the finite bestow of fossil fuels, the generation of renewable energy has obtained vital impact. Hybrid supercapacitors have recently attracted the attention due to their high power/energy density, environmental protection and longed life cycle. Binary/ternary nanocomposites have successfully been tested as electrode materials for energy storage application. However, the limited availability of optimized parameters for the synthesis restricts its usability in real life. Hence, the present work deals with the synthesis of the ternary GO/CNT/COF nanocomposite via a simple chemical process for a new hybrid material. The effect of weight % of GO and CNT at fixed ratio of COF has been optimized for efficient electrochemical behavior according to the central composite design and analyzed using response surface methodology (RSM). The occurrences' electrical behavior has been assessed using various electrochemical techniques, and the ternary system's linked architecture allowed for a variety of electrochemical characterizations. The optimized weight % ternary GO/CNT/COF (2.4: 2.1: 1) electrode had the lower Rct (∼11.34 Ω), a higher specific capacitance (Csp) of 544.91 F/g at 1 mV/s, 175.09 F/g at 1 A/g, and a better cycle stability (existing 84.76% after 8000 cycles), respectively. The symmetric supercapacitor produced 24.31 Wh/kg of specific energy and 248.95 W/kg of specific power, respectively. © 2023 Elsevier B.V.