Abstract：
Over the past decade, solid-state batteries have garnered significant attentions due to their potentials to deliver high energy density and excellent safety. Considering the abundant sodium (Na) resources in contrast to lithium (Li), the development of sodium-based batteries has become increasingly appealing. Sulfide-based superionic conductors are widely considered as promising solid eletcrolytes (SEs) in solid-state Na batteries due to the features of high ionic conductivity and cold-press densification. In recent years, tremendous efforts have been made to investigate sulfide-based Na-ion conductors on their synthesis, compositions, conductivity, and the feasibility in batteries. However, there are still several challenges to overcome for their practical applications in high performance solid-state Na batteries. This article provides a comprehensive update on the synthesis, structure, and properties of three dominant sulfide-based Na-ion conductors (Na3PS4, Na3SbS4, and Na11Sn2PS12), and their families that have a variety of anion and cation doping. Additionally, the interface stability of these sulfide electrolytes toward the anode is reviewed, as well as the electrochemical performance of solid-state Na batteries based on different types of cathode materials (metal sulfides, oxides, and organics). Finally, the perspective and outlook for the development and practical utilization of sulfide-based SE in solid-state batteries are discussed.
摘要：
在过去的十年里，由于固态电池具有提供高能量密度和出色安全性的潜力，因此引起了人们的广泛关注。考虑到与锂（Li）相比丰富的钠（Na）资源，钠基电池的发展变得越来越有吸引力。由于具有高离子电导率和冷压致密化的特点，基于硫化物的超离子导体被广泛认为是固态Na电池中很有前途的固体电解质（SE）。近年来,已经做出了巨大的努力来研究硫化物基钠离子导体的合成，Compositions,电导率，以及电池的可行性。然而,在高性能固态Na电池中的实际应用仍有一些挑战需要克服。本文提供了关于综合的全面更新，结构,和三种主要的硫化物基Na离子导体（Na3PS4，Na3SbS4和Na11Sn2PS12）的性质，和他们的家族有各种阴离子和阳离子掺杂。此外,综述了这些硫化物电解质对阳极的界面稳定性，以及基于不同类型正极材料（金属硫化物，氧化物，和有机物）。最后,讨论了硫化物基SE在固态电池中的开发和实际应用的前景和前景。
