Recent advances in sulfide electrolytes toward high specific energy solid-state lithium batteries
Recent advances in sulfide electrolytes toward high specific energy solid-state lithium batteries
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硫化物电解质在高比能量固态锂电池方面的最新进展
DOI：
10.1039/d1qm00474c
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发表时间：
2021-05
影响因子：
7
通讯作者：
Haoshen Zhou
中科院分区：
文献类型：
--
作者：
Tao Yu;Bingyu Ke;Haoyu Li;Shaohua Guo;Haoshen Zhou
全固态锂离子电池（ASSB）由于其比传统液体锂离子电池更高的安全性和比能量密度而受到广泛关注。固体电解质作为ASSB的关键部件，为满足其复杂的性能要求，人们开发了多种固体电解质。在这些固体电解质中，硫化物电解质被认为是最有前途的候选者，因为它们的高离子电导率和合适的机械性能。然而，仍然有一些尚未解决的障碍，限制了硫化物基ASSB的发展，如有限的离子电导率和固有的和界面的不稳定性。针对这些问题，本文从元素掺杂和界面改性两种典型方法综述了近年来的研究进展。介绍了实验的具体内容和取得的成果。此外，讨论了几种面向ASSB商业化的硫化物电解质层的形式及其优缺点。
All-solid-state batteries (ASSBs) have gained extensive attention due to their improved safety and high specific energy density compared with conventional liquid lithium-ion batteries. As the key component of ASSBs, several kinds of solid electrolytes have been developed to meet the complicated requirements. Among such solid electrolytes, sulfide electrolytes are considered to be the most promising candidates because of their high ionic conductivity and suitable mechanical properties. However, there are still several unresolved obstacles restricting the development of sulfide-based ASSBs, such as limited ionic conductivity and intrinsic and interfacial instability. As for these issues, herein, recent research advances are reviewed from two typical approaches: element doping and interface modification. The experiment details and gained achievements are introduced. Furthermore, several modalities of sulfide electrolyte layers oriented towards commercialization of ASSBs and their merits and demerits are discussed.
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