The discovery of black TiO2 nanospheres opens new avenues for various energy applications. In this study, a novel approach of laser annealing is used for the fabrication of black TiO2 nanospheres. Laser irradiation of TiO? in liquid is a promising method due to its simplicity and less usage of toxic reagents, for tailoring the bandgap of black TiO? for various energy applications. X-ray diffraction (XRD), Scanning electron microscope (SEM), Raman spectroscopy, UV-visible spectroscopy, Photoluminescence (PL), and FTIR spectroscopy were used to characterize the structural, morphological, optical, and defect properties of the synthesized materials. High energy (50 mJ) laser irradiation led to a phase transformation from anatase to rutile in the TiO? nanoparticles, as demonstrated by the strengthening of rutile peaks and the weakening of anatase peaks in the XRD spectra. The formation of Ti?? species and surface disorder lead to a significant reduction in bandgap and enhanced visible light absorption in UV-visible spectroscopy. Electrochemical testing shows exceptional performance of laser modified black TiO2 nanospheres, with a specific capacitance of 3189 F/g at 1 A/g in 1 M NaOH. This work presents potential advancements in energy storage technology by elucidating the possibility of black TiO2 nanospheres as effective electrode materials for energy storage devices.