Lithium-ion battery technology has been steadily approaching its intrinsic limits of energy density and cycling capacity, and solid-state electrolytes offer a more performant solution when compared with traditional organic electrolytes in terms of affinity with Li-metal electrodes and global battery safety. Oxide and sulfide-based solid electrolytes have been abundantly reported in literature owing to their peculiar chemical properties which made them the favourite candidates for practical applications. However, some significant limitations, such as sensitivity against moisture, partial incompatibility with active materials and relatively high costs, lead current research interest towards a series of alternative chemistries and configurations which may overcome their deficiences. Among these new families of Li-superionic conductors halides and hydrides stand out the most for their appealing qualities, including, foremost, values of ionic conductivities above and beyond 10⁻³ S cm⁻¹ at room temperature. Some of the most promising outcomes in research are reported and discussed in the present review, along with a brief outlook of the crucial challenges to face in the field of solid-state batteries and the future developments prospected for energy storage systems.

锂离子电池技术一直在稳步接近其能量密度和循环容量的固有极限，与传统有机电解质相比，固态电解质在与锂金属电极的亲和力和全球电池安全性方面提供了更高性能的解决方案。氧化物和硫化物基固体电解质由于其独特的化学性能而在文献中得到了广泛报道，这使其成为实际应用的首选。然而，一些显着的局限性，例如对水分的敏感性，与活性材料的部分不相容性以及相对较高的成本，导致当前的研究兴趣转向可以克服其缺陷的一系列替代化学和结构。 室温下为^-3  S cm ^-1。在本综述中，报告和讨论了一些研究中最有希望的成果，并简要介绍了固态电池领域面临的关键挑战以及储能系统的未来发展。