Development of Core/Shell Nanocomposites for Application in Energy Storage Systems

The increasing demand for high‐performance energy storage systems has driven significant research into advanced electrode materials. Core/shell nanocomposites have surfaced as promising materials for next‐generation energy storage devices due to their unique structural and electrochemical properties. This review delves into the synthesis, characterization, and applications of core/shell nanocomposites in lithium‐ion batteries (LIBs) and supercapacitors (SCs). The core/shell architecture enhances ion diffusion, electrical conductivity, and structural stability, leading to improved charge storage capacity and cycling performance. Some synthesis techniques such as sol–gel, polymerization, self‐assembly, gas‐shearing, bulk emulsification, and electrospray are discussed alongside various characterization techniques used to analyze their structural and electrochemical properties. The characterization techniques discussed are grouped into four categories, namely microscopic analysis, spectroscopy analysis, scattering analysis, and thermal gravimetric analysis. Despite their advantages, challenges such as complex synthesis, scalability, and interfacial stability must be addressed for large‐scale implementation. Future research should focus on optimizing synthesis techniques to achieve precise control over shell thickness and core composition. The integration of machine learning and computational modelling can significantly enhance the prediction of optimal material combinations and accelerate the design process.