Development of PANI/CuMn2O4 nanocomposite via hydrothermal method for supercapacitor applications

CuMn 2 O 4 is commonly selected as electrode material in supercapacitors owing to its cost-effectiveness and favorable performance as a binary transition metal oxide. The limited energy density of binary metal oxides restricts their widespread use as supercapacitors, thereby highlighting the need to develop a supercapacitor structure based on CuMn 2 O 4 . This study aims to enhance the electrochemical performance of CuMn 2 O 4 and polyaniline (PANI) by exploiting their complementary characteristics through their coupling. Various physiochemical instruments were utilized to investigate the physical properties of synthesized nanomaterials. Specific capacitance (Cs) of PANI/CuMn 2 O 4 composite electrode was determined to be 1181 F g −1 when tested at a 1 A g −1 . Additionally, the cycle retention capacity of the supercapacitor was found to be 95% after undergoing 5000th cycles. The exceptional electrochemical performances of the three electrodes are believed to be attributed to the quick redox kinetics and the dynamic equilibrium between them. The outstanding electrochemical behavior of the nanohybrid can be ascribed to combine the effect of PANI and pseudocapacitance capabilities of CuMn 2 O 4 nanoparticles. Consequently, a novel electrode material with enhanced functionality and stability has been successfully synthesized for application in energy storage devices.