Abstract
AbstractEco-friendly lead-free dielectric materials with high-performance parameters are in great demand for future energy storage devices. The commonly preferred functionalities in this regard are slim/double polarization hysteresis loops, low remnant polarization, high dielectric breakdown strength, large maximum polarization, and thermal stability. Basing on these performance indicators, we comprehensively review the latest research progress on a different genre of representative energy storage materials on a length scale from bulk to nano. Though each category of material has its pros and cons, they exhibit superior properties when downsized to the nanoscale. Some of the structures including core–shell, thin films, polymer nanocomposites demonstrate ultrahigh recoverable energy density and breakdown strength. The contents of this chapter will be relevant for material scientists and researchers to frame new strategies to explore the energy storage capability of lead-free materials for practical applications.KeywordsLead-freeEnergy densityDielectricsPolarizationDielectric breakdown strength
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