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聚合物基固态电解质具有优异的稳定性、加工性和低成本，是实现全固态锂电池的理想电解质，然而低离子电导率严重阻碍了其应用。加入无机填料，构筑聚合物基复合固态电解质是提升离子电导率的有效策略。首先，讨论了聚合物电解质的离子传导机理及复合固态电解质组分间的协同作用。其次，从机械强度、电化学稳定窗口、离子电导率、锂离子迁移数四个方面阐述了填料的作用，并以惰性填料、活性填料、功能性填料为分类对近些年填料的研究进展进行了系统介绍，阐释了其物理化学性质对电解质性能的调控机制。最后，在总结现有研究结果的基础上，针对关键问题对未来的研究方向进行了展望。
Abstract：Polymer-based solid-state electrolytes were ideal electrolytes for realizing all-solid-state lithium batteries due to their excellent stability, processability, and low cost. However, the low ionic conductivity seriously hindered their application. Adding inorganic fillers and constructing polymer-based composite solid-state electrolytes was an effective strategy to improve the ionic conductivity. Firstly, the ionic conduction mechanism of polymer electrolytes and the synergistic effect of the components in composite solid-state electrolytes were discussed. Secondly, the functions of fillers in terms of mechanical strength, electrochemical stabilization window, ionic conductivity, and lithium-ion transfer number were described. Furthermore, the research progress of fillers in recent years was introduced by categorizing them into inert fillers, active fillers and functional fillers, and the regulating mechanism of their physicochemical properties on the electrolyte performance was explained. Finally, on the basis of summarizing the results of the existing research, the future research direction was discussed with respect to the key issues.
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基本信息:
DOI：10.13705/j.issn.1671-6841.2023195
中图分类号:O646.1;TM912
引用信息:
[1]唐菲,王柳.聚合物基复合固态电解质填料研究进展[J].郑州大学学报(理学版),2024,56(03):33-40.DOI:10.13705/j.issn.1671-6841.2023195.
基金信息:
河南省重点研发与推广专项(232102240007)
2024-03-09
2024-03-09
2024-03-09