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.

锂离子电池 (LIB) 已被广泛开发以提高高能量密度、安全性、稳定寿命和成本效益，这对于包括手机、无人机和电动汽车在内的下一代移动电子设备至关重要。聚合物电解质 (PE) 是具有更好安全性和高能量密度的高级 LIB 的关键组件之一。到目前为止，已经开发了几种具有各种结构和功能的尖端 PE。在本文中，我们总结了用于高性能 LIB 的聚合物电解质的最新进展。首先讨论了固体聚合物电解质和凝胶聚合物电解质的离子传输机制、力学性能。然后，将讨论作为高级聚合物电解质的纳米结构聚合物薄膜，包括锂离子电导率、机械性能和加工性能。最后，我们将讨论用于高性能 LIB 的纳米结构聚合物电解质的剩余挑战和未来研究方向。