This work presents a method for synthesizing tire char nanoparticles for use in electrodes meant for energy storage devices in pursuance of sustainable development goals. Empirical exploration has been carried out with a sharp emphasis on sustainability. A detailed empirical analysis explores the morphological, thermogravimetric, and optical characteristics of these nanoparticles, which are produced using a simple synthesis process. Characterization studies confirm the presence of graphitic peaks and a high carbon content. The nanoparticles (with size of ~ 20 nm) have been identified through crystallographic diffraction techniques and scanning electron microscopy image processing. Spectroscopic analysis reveals a band gap (in the tune of 3–4 eV), indicating potential conductivity improvements. Thermogravimetric analysis provides insights into the thermal stability of the samples. These findings support the suitability of the synthesized nanoparticles as active electrode materials for sustainable energy storage applications.