ABSTRACT
The electrodes are isolated by a separator, through which ions can be transported. The electrolytes containing dissociated salts are a key component in Lithium-ion batteries (LIBs), enabling ion transfer between the two electrodes and influencing the cycling performance, capacity, and safety of LIBs. Gel polymer electrolytes composed of liquid plasticizers/organic solvents have been incorporated into polymer-salt systems. Solid-state electrolytes are considered the optimal alternative to conventional liquid electrolytes because they offer excellent safety and such advantages as chemical stability, long battery life, thermal stability, a wide electrochemical window, and high-energy density. Many efforts have been made to increase the ionic conductivity of poly(ethylene oxide)-based solid polymer electrolytes, such as through forming cross-linked polymers, copolymers, or polymers with inorganic fillers. The addition of inorganic fillers into the polymer network results in high ionic conductivity, high mechanical strength, a high transference number, and an enlarged electrochemical window.
