High-performance cerium oxide thin film electrodes prepared by layered deposition technique for enhanced supercapacitor performance
Rushikesh G. Bobade, Bidhan Pandit, Akhil Pradiprao Khedulkar, Shoyebmohamad F. Shaikh, R.C. Ambare
Abstract
ABSTRACT This study focused on the synthesis of cerium oxide (CeO 2 ) electrodes using the Successive Ionic Layer Adsorption and Reaction (SILAR) method to enhance supercapacitor performance. The fabricated thin films exhibited a face-centered cubic structure of cerium oxide with a distinctive cauliflower-like nanostructure. This unique morphology increased the surface area, facilitated efficient ion diffusion, and significantly improved the electrochemical performance. The CeO 2 electrodes achieved a high specific capacitance of 659 F/g at a scan rate of 5 mV/s, as measured by cyclic voltammetry. The electrodes delivered a maximum energy density of 64 Wh/kg and a power density of 3499 W/kg. These results demonstrated that CeO 2 thin films are promising candidates for advanced supercapacitors and hold great potential for future energy storage applications.