Effective Approaches of Improving the Performance of Chalcogenide Solid Electrolytes for All-Solid-State Sodium-Ion Batteries
Hanqing Dai (Fudan University)
Wenqian Xu (Nanjing University of Posts and Telecommunications)
Zhe Hu (Fudan University)
Yuanyuan Chen (Fudan University)
Xian Wei (Fudan University)
Bobo Yang (Fudan University)
Zhihao Chen (Fudan University)
Jing Gu (Nanjing University of Posts and Telecommunications)
Dan Yang (Fudan University)
Fengxian Xie (Fudan University)
Wanlu Zhang (Fudan University)
Ruiqian Guo (Fudan University)
Kouchi Zhang (Fudan University, Southern University of Science and Technology , TU Delft - Electronic Components, Technology and Materials)
Wei Wei (Nanjing University of Posts and Telecommunications)
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Abstract
All-solid-state sodium-ion batteries (SIBs) possess the advantages of rich resources, low price, and high security, which are one of the best alternatives for large-scale energy storage systems in the future. Also, the chalcogenide solid electrolytes (CSEs) of SIBs have the characteristics of excellent room-temperature ionic conductivity (10−3-10−2 S cm−1), low activation energy (<0.6 eV), easy cold-pressing consolidation, etc. Hence, CSEs have become a very active area of all-solid-state SIB research in recent years. In this review, the modification methods and implementation technologies of CSEs are summarized, and the structure and electrochemical performance of the CSEs are discussed. Furthermore, the auxiliary function of first-principle calculations for modification is introduced. Ultimately, we describe the challenges regarding CSEs and propose some strategic suggestions.
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