Powder Property Evaluation Technology to Improve the Performance of All Solid-State Batteries

All solid-state lithium-ion batteries, which are expected as next-generation batteries for electric vehicles, have the potential for higher energy density than liquid-based lithium-ion batteries. On the other hand, all solid-state batteries have problems such as high reactivity of solid electrolytes, difficulty in designing electrodes and cells, and development of manufacturing process. In order to optimize the electrode and cell design, it is important to understand powder characteristics of solid electrolyte, to form the conductive path and the lithium ion path, and to form solid-solid interface. This paper describes the characteristics of solid electrolytes and all solid-state lithium-ion batteries, and evaluation and analysis techniques for solid electrolytes and all solid-state lithium-ion batteries.