Na_(3)Zr_(2)Si_(2)PO_(12)固态电解质研究进展

Research progress of Na_(3)Zr_(2)Si_(2)PO_(12) solid electrolyte

钠离子电池具有资源丰富、能量密度高等优点,使用固态电解质的固态钠电池兼具高安全性成为研究热点。固态电解质是超离子导体,是固态电池关键材料。Na_(3)Zr_(2)Si_(2)PO_(12)是钠超离子导体(NASICON)中最具代表性的固态电解质材料。总结了Na_(3)Zr_(2)Si_(2)PO_(12)材料的结构、离子传输机制及其相互关系,旨在从机理上理解Na_(3)Zr_(2)Si_(2)PO_(12)固态电解质中钠离子传输性能;总结了主要制备方法,指出了不同方法的优缺点;在提升离子电导率方面,对合成工艺、掺杂、界面因素进行了总结,力求归纳和探索合成高性能钠离子固态电解质的途径。

The sodium-ion battery has the advantages of abundant resources and high energy density.In particular,the solid-state sodium batteries that use solid electrolytes with high safety have become a research hotspot.The solid electrolyte is the superionic conductor and the key material of solid state battery.Na_(3)Zr_(2)Si_(2)PO_(12) is one of the most representative solid electrolyte materials in sodium superionic conductor(NASICON).The structure of Na_(3)Zr_(2)Si_(2)PO_(12) material,the ion transport mechanism and their relationship were summarized,in order to understand the sodium ion transport performance in Na_(3)Zr_(2)Si_(2)PO_(12) solid electrolyte from the mechanism.The main preparation methods were summarized and the advantages and disadvantages of different methods were pointed out.In terms of improving ionic conductivity,the synthesis process,doping and interface factors were summarized,in order to summarize and explore the approaches to synthesize high performance sodium-ion solid electrolyte materials.