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For rechargeable lithium battery applications, active materials are required to achieve a higher energy density because the inner space of a battery is limited, and this necessitates active materials with a high tap density with spherical morphology. nanoreactor: Intermatrix synthesis of platinumcopper coreshell nanoparticles. The encapsulation of the flame retardant inside the protective polymer shell has prevented direct exposure and dissolution of the flame retardant into the electrolyte, preventing their. Among them, core/shell structures are a particular class of nanoparticles made with an. (A) The free-standing separator is composed of microfibers with a core-shell structure, where the flame retardant is the core and the polymer is the shell. Spherical nanometer- and sub-micrometer-sized core-structure particles were produced effectively using the preparation methods. More recently, progress in chemical and physical synthesis routes. The unique properties of the core-shell microparticles make these microspheres a promising candidate for the targeted drug delivery in the body. The core-shell microparticles can target the specific sites of therapeutic agents, protein, and gene. A number of methods were developed for the synthesis of core-shell structured powders: interface assembly strategies, the layer-by-layer self-assembly process, the hydrothermal precipitation method, and the template method. The complex structure of the microparticles gives precise drug release in a particular part of body. For example, the coaxial spinneret could be used to prepare core-shell nanofibers 19, and the three-fluid electrospinning process using a structured spinneret could prepare high-quality Janus. Fabrication of spherical core-shell structure cathode materials with hollow interiors has attracted considerable attention in recent years because of the particles' potential use as low-density capsules for photonic crystals, catalysts, diagnostics, and pharmacology. For these types of particle core and shell both are made of metal, metal oxide, semiconductor, any other organic compound, or silica.The silica coating used on.