Hybrid electrolytes for lithium-ion batteries

Lithium-ion batteries (LIBs) are playing a central role in the transition to a postoil society. Solid-state electrolytes are considered a promising technology to achieve high energy density (500Wh/kg) by implementing Li metal as anode material, as well as to overcome the safety concerns related to the liquid electrolytes used in LIBs. In this chapter, the limitations of traditional polymer solid electrolytes and the recent advances in hybrid solid electrolytes (e.g., composite solid electrolytes) will be reported. Furthermore, the effects of the inorganic filler (e.g., concentration, particle size, morphology, etc.) on Li+ ions’ conduction mechanism will be elucidated. Finally, the advantages of the use of ionic liquids will also be introduced.