A comprehensive review of polymer electrolyte for lithium-ion battery

Energy is an essential factor in our day-to-day life. The major demand for energy in modern society has been increasing rapidly. Among all energy storage systems, batteries are one of the most efficient devices. Li-ion batteries have received huge attention due to their unique characteristics like high energy density, flexibility, lightweight, and a longer lifespan than comparable battery technologies. Solid polymer electrolytes have gained huge attention in high-performance LIB due to their high safety, no leakage, wide electrochemical stability window, mechanical flexibility, and thermal stability. In this review, a series of polymers such as PMMA, PEO, PAN, PVDF, PVDF-HFP, PVC, PVA, PS, and PC are discussed. Some of the recent publications of polymer electrolyte with different combinations of lithium salt are highlighted. The characteristics and drawbacks of commonly used lithium salt are listed. In order to improve the ionic conductivity, various salt, solvents, and inorganic filler/clay are used. This review opens doors for novel approaches and also provides the progress of new solid polymer electrolytes.Graphical abstract