Potential Applications of NASICON-Structured Solid Electrolytes in Low-Temperature Lithium-Ion Batteries

NASICON type solid electrolytes are widely regarded by researchers as ideal materials for next generation all solid state batteries due to their high ionic conductivity, wide electrochemical window, and low interfacial side reactions. However, several practical challenges hinder their real world applications, such as unstable interfaces between electrodes and electrolytes, high grain boundary resistance, and immature large scale manufacturing processes. These issues require systematic investigation to identify their underlying causes and to develop effective solutions. This paper reviews recent research advances in the material design, interface engineering, and scale up fabrication of NASICON electrolytes. It focuses on the degradation mechanisms of ionic transport kinetics, the imbalance in interfacial chemical and mechanical compatibility, and issues in powder compaction and sintering during mass production. Through innovative strategies at multiple scales atomic level doping modifications, mesoscopic interface buffer layer design, and macroscopic sintering parameter control this work establishes a"material structure process" co-optimization framework, revealing key pathways to performance enhancement and practical engineering implementation. The study aims to clarify the logical progression from fundamental research to industrial application for NASICON electrolytes, offering the industry a solid state battery model that balances high energy density with low manufacturing costs. Future research should integrate high throughput computational methods and intelligent process control technologies to develop dynamically stable interface strategies and a comprehensive evaluation system that considers electrochemical performance, mechanical reliability, and cost effectiveness, thereby accelerating commercial adoption.