Research progress on functional polymer solid electrolytes for lithium batteries

Abstract

Abstract: Solid-state electrolytes (SSEs) offer superior safety profiles, enhanced electrochemical stability, and expanded electrochemical windows compared to liquid counterparts. Currently, the commercialization of SSE is facing severe challenges. This review provides an overview of the latest researches on SSEs for lithium batteries, with a focus on wide temperature range operation, optimized interface functionality, inhibition of active component loss, and novel modification strategies such as flame retardant, self-healing, intelligent responsive, and environmentally friendly electrolytes. The application of techniques such as molecular design, in-situ polymerization, composite structures, single ion conductors, nano functional components, and special polymers can effectively enhance the performance of advanced SSEs. Future researches in this field focused was discussed, including improving ion conductivity, maintain strength and stability, exploring new material systems, and optimizing electrode interfaces, etc. These researches aim to providing strong support for high-performance solid-state batteries widely used in the fields of electronics, electric vehicles, and energy storage.