Solid-state polymer electrolytes in lithium batteries: latest progress and perspective

The increasing demands for battery performance in the new era of energy necessitate urgent research and development of an energy storage battery that offers high stability and a long service life. Among the various types of batteries available, the all-solid lithium battery emerges as the preferred choice because of its exceptional safety, stability, and sustainability features. The solid electrolyte plays a crucial role in facilitating efficient energy transmission within the structure of the lithium battery. Solid electrolytes based on polymer chemistry can be classified into different categories, such as ether-based, ester-based, nitrile-based, and polyvinylidene fluoride materials. This discussion also covers topics such as ion transport mechanisms, levels of ionic conductivity, techniques for modification, and analysis of cyclic stability specifically for lithium-ion batteries utilizing solid electrolytes. Finally, an outlook on the future research direction of solid-state polymer electrolytes is suggested for commercially large-scale production and application. This review provides a comprehensive overview of solid-state polymer electrolytes performance characteristics of various chemical structures such as ethers, esters, nitrile and vinylidene fluoride.