Abstract Solid lithium-ion-conducting material is the key component in the fabrication of next-generation all solid state lithium ion batteries (LIBs) which would exhibit superior safety and performance compared with the currently widely used ones that resort to essentially inflammable and volatile organic solvents. To date, great efforts have been made in developing solid conductors with high lithium ion conductivity, such as polymers and inorganic materials. Rare earths play a very important role in this area and have attracted extensive interest since the recent decades for their unique properties in the realm of solid-state inorganic lithium-ion-conducting electrolyte materials. In this introduction, we focus on the role of rare earths in solid conductors for lithium ion, especially in a few most studied systems such as perovskites, garnets, silicates, borohydride and the recently reported halides in which rare earths act as a key framing component. Besides, the effect of rare earths as dopants is also discussed in some recently studied systems. Valence, coordination, and size are the most important factors that influence the crystal structure and property of these lithium ion conductors. The aim of this review is to highlight the great potentials of these unique elements of rare earths, and to help improve the performance of existing materials and explore new applications in the development of new LIBs with high performances.

中文翻译：

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稀土在固体锂离子导体中的研究进展

摘要 固态锂离子导电材料是制造下一代全固态锂离子电池 (LIBs) 的关键部件，与目前广泛使用的依靠本质上易燃易挥发的有机锂离子电池相比，锂离子电池具有更好的安全性和性能。溶剂。迄今为止，人们在开发具有高锂离子电导率的固体导体方面做出了巨大努力，例如聚合物和无机材料。稀土在该领域发挥着非常重要的作用，近几十年来因其在固态无机锂离子导电电解质材料领域的独特性能而引起了广泛的兴趣。在本介绍中，我们重点介绍稀土在锂离子固体导体中的作用，尤其是在一些研究最多的系统中，如钙钛矿、石榴石、硅酸盐、硼氢化物和最近报道的卤化物，其中稀土是关键的框架成分。此外，在一些最近研究的系统中也讨论了稀土作为掺杂剂的影响。价态、配位和尺寸是影响这些锂离子导体晶体结构和性能的最重要因素。这篇综述的目的是突出稀土这些独特元素的巨大潜力，帮助提高现有材料的性能，探索开发高性能新型锂离子电池的新应用。和尺寸是影响这些锂离子导体晶体结构和性能的最重要因素。这篇综述的目的是突出稀土这些独特元素的巨大潜力，帮助提高现有材料的性能，探索开发高性能新型锂离子电池的新应用。和尺寸是影响这些锂离子导体晶体结构和性能的最重要因素。这篇综述的目的是突出稀土这些独特元素的巨大潜力，帮助提高现有材料的性能，探索开发高性能新型锂离子电池的新应用。