Electrodeposition of poly(aniline-co-4-nitroaniline)/CoAl-layered double hydroxide composites as electrode materials for supercapacitor applications

Abstract

One significant area of global technological growth is power management and energy storage, and supercapacitors (SCs) offer incredibly effective technology in these areas. SCs may exhibit variable performance depending on the electrode materials, electrolytes, designs, and fabrication techniques. This study investigates the electrochemical performance of an organic conductive copolymer composite and an inorganic layered material as electrode material for supercapacitor application. For the first time, this project presents a strategy to use 4NPANI (Poly(aniline-co-4-Nitroaniline))/CoAl-LDH synthesized by electrodeposition method as an effective electrode material. The electrochemical behavior of their composite(4NPANI/CoAl-LDH) and 4NPANI in supercapacitors was then examined—a three-electrode cell with 1 M KOH as the electrolyte was used for the studies. Electrochemical impedance spectroscopy (EIS), Cyclic voltammetry (CV), and galvanostatic charge–discharge (GCD) methods were accustomed to assess the electrochemical execution of supercapacitors using a three-electrode system, the 4NPANI/CoAl-LDH composite showed a maximum energy density of 15.38 Wh kg⁻¹ and a maximal specific capacitance of 547.01 F g⁻¹ at a current density of 1 A g⁻¹ in this work.