Abstract
In present study, nanospheres of CeO
2
are fabricated via utilizing a solvothermal mixed solvent technique at a low temperature. Using a three-electrode set up, the electrochemical activity of CeO
2
nanospheres in 2.0 M alkaline medium was evaluated. At a scan range of 5 mV s
−1
, the material displayed large stability, the ability to work at high rates, and columbic efficiency, like specific capacitance value of 1435 F g
−1
with specific energy of 87.89 Whkg
−1
as well the power density of 1.0986 Wkg
−1
. The outstanding outcome of the CeO
2
nanosphere is due to its mesoporous structure and high electrical double-layer capacitance of 6.35 mF. The nanospheres morphology of CeO
2
was responsible for increased conductivity that allows ions to pass easily, and the improved findings show that the procedure employed to make the oxides, which is beneficial for future generations and may be used to produce a variety of oxides that will resolve the energy issues.
Graphical Abstract
Highlights
Controlled morphology of CeO
2
nanoballs was fabricated with efficient and economical solvothermal method.
The capacitive properties of the CeO
2
nanoball were determined with three-electrode system under 2 M KOH.
The electrochemical result of CeO
2
displays a high specific capacitance value of 1435 F g
−1
, specific energy of 87.89 Wh kg
−1
, and specific power of 1.0986 Wkg
−1
.
The enhanced supercapacitive property of CeO
2
was attributed to diverse morphology, larger surface area, and small crystallite size that permits faster ionic transport.