DOI: https://doi.org/10.36347/sajb.2026.v14i04.002

Pages: 271-295

The accelerating demand for high-performance energy storage systems has exposed critical limitations in conventional electrode materials, particularly in terms of low electrical conductivity, structural instability, and limited cycling durability of metal oxide-based nanostructures. Despite extensive progress, existing approaches often treat synthesis, surface engineering, and chemical modification as isolated strategies, resulting in suboptimal performance and poor scalability. This study addresses this gap by presenting an integrated framework that combines controlled chemical synthesis with advanced surface engineering and precise chemical tailoring of metal oxide nanoparticles. A hybrid methodological approach is adopted, incorporating experimental synthesis routes alongside critical analysis of recent advancements to establish robust structure–property relationships. The findings demonstrate that synergistic tuning of particle morphology, surface chemistry, and defect structures significantly enhances electrochemical behavior, leading to improved specific capacitance, higher energy and power densities, and superior long-term cycling stability. Furthermore, the incorporation of engineered surface functionalities facilitates efficient charge transfer and ion diffusion, overcoming intrinsic material limitations. The proposed strategy also highlights pathways toward scalable and cost-effective fabrication, addressing key barriers to industrial adoption. These insights position chemically tailored metal oxide nanoparticles as promising candidates for next-generation energy storage technologies, with direct implications for electric vehicles, grid-scale energy systems, and high-performance supercapacitors.