Investigation of the Electrochemical Behavior of CuO-NiO-Co[sub.3]O[sub.4] Nanocomposites for Enhanced Supercapacitor Applications

• Published in: Materials 2024-08, Vol.17 (16)
• Main Authors: Kannan, Karthik, Chinnaiah, Karuppaiya, Gurushankar, Krishnamoorthy, Krishnamoorthi, Raman, Chen, Yong-Song, Murphin Kumar, Paskalis Sahaya, Li, Yuan-Yao
• Format: Article
• Language: English
• Subjects: Capacitors; Cobalt; Copper oxide; Cuprite; Electrochemical reactions
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma17163976

In the present study, composites incorporating NiO-Co[sub.3]O[sub.4] (NC) and CuO-NiO-Co[sub.3]O[sub.4] (CNC) as active electrode materials were produced through the hydrothermal method and their performance was investigated systematically. The composition, formation, and nanocomposite structure of the fabricated material were characterized by XRD, FTIR, and UV–Vis. The FE-SEM analysis revealed the presence of rod and spherical mixed morphologies. The prepared NC and CNC samples were utilized as supercapacitor electrodes, demonstrating specific capacitances of 262 Fg[sup.−1] at a current density of 1 Ag[sup.−1]. Interestingly, the CNC composite displayed a notable long-term cyclic stability 84.9%, which was observed even after 5000 charge–discharge cycles. The exceptional electrochemical properties observed can be accredited to the harmonious effects of copper oxide addition, the hollow structure, and various metal oxides. This approach holds promise for the development of supercapacitor electrodes. These findings collectively indicate that the hydrothermally synthesized NC and CNC nanocomposites exhibit potential as high-performance electrodes for supercapacitor applications.