 Polymer-based solid electrolyte materials have been studied extensively over the last few decades due to their potential applications in next-generation batteries. The main challenges associated with these materials include low ionic conductivity, poor mechanical stability, and limited interfacial compatibility. Recent research has focused on improving the ionic conductivity by optimizing the composition, structure, and morphology of the polymers used in the electrolytes. Additionally, the use of fillers and additives can also be employed to improve the mechanical properties of the material. Furthermore, the interactions between the polymer and the electrode materials must be considered when designing the battery architecture. Overall, polymer-based solid electrolytes offer great promise for future energy storage applications. This article was authored by Zhu Li, Jialong Fu, Xiaoyang Zhou, and others.