High-performing and ultra-stable TiO2 nanospheres as electrode materials for pseudo-supercapacitors

[Display omitted] •TiO2 nanospheres were developed by solution growth technique.•Physical and chemical properties were studied.•High specific capacitance value 810F/g was achieved.•TiO2 nanospheres has been found to remain stable until 10,000 cycles. In this study, we prepared titanium dioxide by a simple, cost-effective, and sol–gel method. The maximum specific capacitance value was attained by the TiO2 nanosphere modified electrode, which measured 810F/g at 0.5 A/g in 2 M KOH. The stability of the TiO2 nanosphere coated electrode was demonstrated to be significantly higher than that of other commercially available electrodes for 10,000 cycles at 1.0 A/g. The TiO2 nanosphere is suitable as a high-efficienct electrode material for supercapacitor applications.