ABSTRACT
This chapter focuses on the recent advances that have happened in the field of polymer Ionic Liquid (IL) (PIL) gel electrolytes (PILGEs) and their application to Lithium-Ion Batteries (LIBs). A sudden increase in the research activity to develop solid-state electrolytes for LIBs is taking place nowadays. Electrolytes developed in the recent past consisted of organic solvents, which were quite incompatible with the next-generation flexible wearable technologies. Solid-state electrolytes are being developed to tackle this problem. Organic electrolyte-based LIBs face critical issues associated with flammability, rigidity, and leakage. The recent developments of flexible and wearable devices necessitate flexible power supplies for their efficient working. Recent developments in the PILGEs were discussed and their advantages, when compared with their GPE counterparts, were prepared using organic solvents, were discussed. Strategies to develop flexible PILGE membranes were introduced from the relevant literature, and their electrochemical performances, when used in LIBs, were also explained.
