Pioneering the Synergy of Cerium-Doped Cadmium Oxide Hybrid Nanomaterials for Supercapacitor Performance
摘要
The growing demand for energy storage solutions has emphasized the significance of preparing effective electrode materials for supercapacitors performance. Cadmium oxide (CdO) is an encouraging electrode material due to its remarkable electrochemical properties. In the current study, the sol–gel approach was employed to synthesized pure CdO, 3% Ce-doped CdO, and 5% Ce-doped CdO nanoparticles. XRD peaks revealed the cubic phase of CdO material, with minor shifts in peak positions due to doping of cerium. The Brunauer–Emmett–Teller (BET) analysis depicted a balance between surface area and electrochemical activity and demonstrated higher surface area about 25.3 m2/g. The synthesized nanomaterials were tested for electrochemical and supercapacitor excellence. The electrochemical performance was conducted in a 2 M KOH electrolyte solution illustrated efficient performance of the 3% Ce-doped CdO with a remarkable capacitance of 1027 F/g at 1 A/g and 90% cyclic stability over 3000th cycles. The specific capacitance of significant electrode material (3% Ce@CdO) was tested at varying current densities about 1–4 A/g. The specific capacitance value decreases gradually with enhancing current density, 1027 F/g at 1 A/g to 767 F/g at 4 A/g. These outcomes recommend that Ce-doped CdO is a favorable material for next-generation supercapacitors.