Recent advances on rare earths in solid lithium ion conductors

作者：Qian Zhang,Zhiqing Gao,Xiaomeng Shi,Chao Zhang,Kang Liu,Jun Zhang,Liang Zhou,Chunjie Ma,Yaping Du

摘要：Solid lithium-ion-conducting material is the key component in the fabrication of next-gene ration 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 solidstate 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.

发文机构：Tianjin Key Lab for Rare Earth Materials and Applications State Key Laboratory of Eco-hydraulics Engineering in Northwest Arid Region College of Chemistry and Chemical Engineering and Inner Mongolia Key Lab of Nanoscience and Nanotechnology State Key Laboratory of Rare Earth Resource Utilization Shaanxi J&R Optimum Energy Co.

关键词：RareearthsLithiumionbatteryCONDUCTIVITYMECHANISM

分类号： TM912[电气工程—电力电子与电力传动]TB34[一般工业技术—材料科学与工程]