Motoyama Munekazu
Kyushu University Platform of Inter-/Transdisciplinary Energy Research, Kyushu University, 6-1, Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan.
Microscopy (Oxf). 2024 Apr 8;73(2):184-195. doi: 10.1093/jmicro/dfad058.
Solid-state batteries have potential to realize a rechargeable Li-metal anode. However, several challenges persist in the charging and discharging processes of the Li-metal anode, which require a fundamental understanding of Li plating and stripping across the interface of solid-state electrolytes (SEs) to address. This review overviews studies on Li-metal anodes in solid-state batteries using in situ observation techniques with an emphasis on Li electrodeposition and dissolution using scanning electron microscopy and SEs such as lithium phosphorus oxynitride and garnet-type compounds such as Li7La3Zr2O12. The previous research is categorized into three topics: (i) Li nucleation, growth and dissolution at the anode-free interface, (ii) electrochemical reduction of SE and (iii) short-circuit phenomena in SE. The current trends of each topic are summarized.
固态电池有潜力实现可充电锂金属阳极。然而，锂金属阳极的充电和放电过程中仍然存在一些挑战，这需要从根本上理解锂在固态电解质（SEs）界面上的沉积和剥离，以便解决这些问题。本综述概述了使用原位观察技术对固态电池中锂金属阳极的研究，重点是利用扫描电子显微镜以及诸如氮氧化锂磷和石榴石型化合物（如Li7La3Zr2O12）等固态电解质进行锂的电沉积和溶解研究。先前的研究分为三个主题：（i）无阳极界面处的锂成核、生长和溶解；（ii）固态电解质的电化学还原；（iii）固态电解质中的短路现象。总结了每个主题的当前研究趋势。
