| 摘要 |
PURPOSE:To increase electric conductivity of a solid electrolyte and stabilize it to prevent decomposition at high temperature to increase battery performance by using a four-component system vitreous solid electrolyte comprising Li2S, P2S5, GeS2 and LiI. CONSTITUTION:A four-component vitreous solid electrolyte comprising Li2S, P2S5, GeS2, and LiI is used as a solid electrolyte of a solid electrolyte battery using lithium as a negative active material. For example, each crushed material dried under reduced pressure at 250 deg.C is weighed in a molar ratio of Li2S:P2S5: GeS2: LiI=30:10:5:55, and they are mixed with a mortar and a pestle. This mixture is sealed in a quartz ampule in vacuum and heated in an electric furnace at 900 deg.C, and quickly cooled to near room temperature to obtain a vitreous solid electrolyte. The solid electrolyte is crushed under 400 mesh and pressed under a pressure of 3ton/cm<2> with a mold to prepare a four-component system vitreous solid electrolyte pellet. |
