Incredible electrochemical performance of ZnWO₄/PANI as a favorable electrode material for supercapacitor

Abstract

Abstract ZnWO 4 /PANI was synthesized through the in-situ polymerization technique, revealing the wolframite monoclinic phase in its XRD pattern. The distinctive morphology of ZnWO 4 /PANI observed in the SEM image, exhibits enhanced redox sites, thereby improving its electrochemical performance. Cyclic voltammetry and galvanostatic charge-discharge studies confirm the pseudocapacitive behavior of ZnWO 4 /PANI, showcasing an impressive capacitance of 908 F g −1 at 1 A g −1 in 1 M KOH, along with a capacitive retention of 94 % over 5000 cycles. The robust conductivity of PANI and the narrow ion transport channels along with multiple oxidation states of ZnWO 4 contribute to the higher specific capacity, guiding the movement of electrons and ions. This study suggests a synergistic effect in ZnWO 4 /PANI, resulting in remarkable electrochemical performance enhancements.