Abstract
Silver-coated ZrO
2
and individual ZrO
2
nanoparticles have been synthesized using the simple reduction and co-precipitation methods, respectively. The synthesized products were examined using the X-ray diffraction, energy-dispersive X-ray and UV-visible spectroscopy, which confirmed the successful synthesis of materials. Scanning electron microscopy and transmission electron microscopy revealed the round-shaped nanoparticles of both materials. The cyclic voltammograms revealed the well-defined redox peaks and recommended the pseudocapacitive nature of the electrodes. The silver-coated zirconia showed higher specific capacitance of 792 F/g at 10 mV/s as compared to individual zirconia (10.22 F/g). Silver-coated ZrO
2
also showed good power density of 274.5 W/kg at current density of 5 mA/cm
2
through the galvanostatic charge discharge profile. Hence, the results suggest that silver-coated ZrO
2
showed improved electrochemical performance as compared individual ZrO
2
due to higher electrical conductivity and specific surface area. Hence, silvercoated ZrO
2
nanoparticles can be employed as an electrode material for supercapacitor applications.