Sodium super ionic conductor (NASICON) based electrode and electrolyte compounds offer new prospect to achieve higher energy/power densities, improved safety, and longer cycle life in sodium ion batteries (SIBs). For many years NASICON compounds have not been regarded as a possible electrode material for SIBs, mainly because, the research was focusing on the electrolyte aspect. However, in recent years NASICON type materials have attracted a great deal of attention as an electrode as well due to their excellent properties, which include high ionic mobility, better safety and improved structural stability. This review for the first time features and consolidates the ion diffusion mechanisms and crystal structures of different explored NASICON materials. It also provides insight into the present challenges to commercialize these materials for developing functional SIBs. We believe that the thorough understanding of the ion diffusion mechanisms and crystal structures of NASICON based materials is necessary to design new electrodes and will be useful to improve the electrochemical performances of SIBs. The advantages/disadvantages of each category of materials are also discussed. Apart from the widely investigated NASICON type cathode and anode materials, the rarely explored electrolyte material is also included for the complete review of this potential material. We believe that our detailed analysis on crystal structure and ion diffusion mechanism presented in this review will provide insights into important progress that are made in NASICON materials and could open up new opportunities for devising battery formulations that would continue to evolve and will also appeal to broad research audience.

基于钠超离子导体（NASICON）的电极和电解质化合物为实现更高的能量/功率密度，提高的安全性以及延长钠离子电池（SIB）的使用寿命提供了新的前景。多年来，NASICON化合物一直未被视为SIBs的可能电极材料，主要是因为研究集中在电解质方面。然而，近年来，NASICON型材料由于其优异的特性而引起了作为电极的关注，这些特性包括高离子迁移率，更好的安全性和改善的结构稳定性。这篇综述首次介绍并巩固了不同探索的NASICON材料的离子扩散机制和晶体结构。它还提供了有关将这些材料商业化以开发功能性SIB的当前挑战的见解。我们认为，对基于NASICON的材料的离子扩散机理和晶体结构的透彻了解对于设计新电极是必要的，并且对改善SIB的电化学性能很有用。还讨论了每种材料的优缺点。除了经过广泛研究的NASICON型阴极和阳极材料外，还包括很少探索的电解质材料，以全面审查这种潜在材料。