Hoang Huy Vo Pham, So Seongjoon, Hur Jaehyun
Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Korea.
Nanomaterials (Basel). 2021 Mar 1;11(3):614. doi: 10.3390/nano11030614.
Among the various types of polymer electrolytes, gel polymer electrolytes have been considered as promising electrolytes for high-performance lithium and non-lithium batteries. The introduction of inorganic fillers into the polymer-salt system of gel polymer electrolytes has emerged as an effective strategy to achieve high ionic conductivity and excellent interfacial contact with the electrode. In this review, the detailed roles of inorganic fillers in composite gel polymer electrolytes are presented based on their physical and electrochemical properties in lithium and non-lithium polymer batteries. First, we summarize the historical developments of gel polymer electrolytes. Then, a list of detailed fillers applied in gel polymer electrolytes is presented. Possible mechanisms of conductivity enhancement by the addition of inorganic fillers are discussed for each inorganic filler. Subsequently, inorganic filler/polymer composite electrolytes studied for use in various battery systems, including Li-, Na-, Mg-, and Zn-ion batteries, are discussed. Finally, the future perspectives and requirements of the current composite gel polymer electrolyte technologies are highlighted.
在各类聚合物电解质中，凝胶聚合物电解质被视为高性能锂和非锂电池的理想电解质。在凝胶聚合物电解质的聚合物 - 盐体系中引入无机填料，已成为实现高离子电导率以及与电极良好界面接触的有效策略。在本综述中，基于无机填料在锂和非锂聚合物电池中的物理和电化学性质，阐述了其在复合凝胶聚合物电解质中的具体作用。首先，我们总结了凝胶聚合物电解质的历史发展。接着，列出了应用于凝胶聚合物电解质的详细填料清单。针对每种无机填料，讨论了添加无机填料提高电导率的可能机制。随后，探讨了用于包括锂、钠、镁和锌离子电池在内的各种电池系统的无机填料/聚合物复合电解质。最后，强调了当前复合凝胶聚合物电解质技术的未来前景和要求。
