无机填料在复合固态电解质中的作用机制研究进展  

Research Progress on the Mechanism of Action of Inorganic Fillers in Composite Solid Electrolytes

作　　者：国洪瑶 吴晓萌[1] 吴勇民[1] 汤卫平[1] GUO Hongyao;WU Xiaomeng;WU Yongmin;TANG Weiping(State Key Laboratory of Space Power-Sources Technology,Shanghai Institute of Space Power-Sources,Shanghai 200245,China)

机构地区：[1]上海空间电源研究所空间电源技术国家重点实验室,上海200245

出　　处：《材料导报》2023年第S01期1-8,共8页Materials Reports

基　　金：国家重点研发计划项目(2022YFB3807700)。

摘　　要：全固态锂电池以其良好的安全性和更高的能量密度受到广泛关注,而固态电解质是决定固态电池性能的关键材料。由聚合物基体和无机填料组成的无机/有机固体复合电解质因其优良的可设计性而显示出广阔的应用前景。其中,锂离子传导能力是复合电解质性能的决定性因素,而无机填料对提升锂离子传导有重要作用。本文列举了典型无机填料的种类,总结了不同种类填料对加速锂离子输运过程的作用机理,讨论了无机填料的添加量、颗粒大小、分散性、形态对提升离子电导率的影响规律。除此之外,还归纳了无机填料对电化学窗口、锂离子迁移数、力学性能等其他性能的影响。All-solid-state lithium batteries have attracted wide attention for theirexcellent safety and higher theoretical energy density.Among the different types of solid-state electrolyte which is the key material determining the performance of solid-state batteries,composite solid electrolytes(CPEs)composed of polymer matrix and inorganic filler shows broader application prospects because of their excellent design ability.Ion conductivity is the decisive factor for the application of CPEs where the inorganic filler plays a significant role.In this paper,we list the types of inorganic fillers,summarize the lithium-ion transport mechanism,and discuss the influence of particle size,morphology,addition amount,and dispersibility of inorganic fillers on improving ionic conductivity.In addition,the effects of inorganic fillers on other properties such as the electrochemical window,lithium-ion migration number,and mechanical properties are also summarized.

关 键 词：固态锂电池 复合固态电解质 无机填料 离子输运机制 纳米尺度设计 

分 类 号：TQ152[化学工程—电化学工业]