聚合物固态电解质离子电导率提升策略研究进展

Research progress on strategies for ionic conductivity enhancement of polymer solid-state electrolytes

聚合物基固态电解质因其柔韧性、工艺兼容性、稳定性和低成本,有望引领固态锂金属电池成为下一代储能设备,实现高能量密度和安全性的应用.高介电聚合物的特性能有效促进锂盐在电解质中的离解.本文梳理了介电性能与锂离子传输间关系的研究成果,并深入探讨了高介电聚合物基体及填料如何提升聚合物电解质的离子电导率.最后,总结了介电材料在聚合物基固态电解质应用中的挑战与机遇.这些研究结果对于推动高性能聚合物基固态电池的持续发展具有重要意义.

Polymer-based solid-state electrolytes are expected to lead solid-state lithium-metal batteries as the next generation of energy storage devices for high energy density and safety applications due to their flexibility,process compatibility,stability and low cost.The properties of high dielectric polymers can effectively promote the dissociation of lithium salts in the electrolyte.In this paper,research results on the relationship between dielectric properties and lithium ion transport are sorted out,and how the high dielectric polymer matrix and fillers can enhance the ionic conductivity of polymer electrolytes are discussed in depth.Finally,the challenges and opportunities of dielectric materials in polymer-based solid-state electrolyte applications are summarized.These findings are of great significance in promoting the continued development of high-performance polymer-based solid-state batteries.