Nanostructured Polymer Electrolytes for Lithium-Ion Batteries

The lithium-ion batteries (LIBs) have been extensively developed for improving high energy density, safety, stable lifespans, and cost-effectiveness, which are essential in next-generation mobile electronic devices including cell phone, drone, and electrical vehicles. Polymer electrolytes (PEs) are one of the key components for advanced LIBs with better safety and high energy density. Thus far, several cutting-edge PEs with various structures and functionalities have been developed. In this article, we have summarized recent progress in polymer electrolytes for high-performance LIBs. At first, the ion transport mechanisms, mechanical properties of solid polymer electrolytes and gel polymer electrolytes are discussed. Then, the nanostructured polymeric films as advanced polymer electrolytes will be discussed including lithium-ion conductivity, mechanical properties, and processibility. Finally, we will discuss remaining challenges and future research direction of the nanostructured polymer electrolytes for high-performance LIBs.