| 摘要 |
The present invention relates to a method for preparing a solid electrolyte composition for a glass-type lithium secondary battery. The present invention minimizes defects and cracks causing reduction of resistance on an interface generated in a solid electrolyte heat treatment process and increases the crystallinity to have enhanced lithium ion conductivity in order to increase ion conductivity lower than that of a liquid electrolyte and improve the state of the interface between the solid electrolyte and an electrode material. The method includes the steps of: (a) mixing raw materials including Li_2O, SiO_2, TiO_2, P_2O_5, BaO, Cs_2O, and V_2O_5; (b) melting the mixed raw materials; (c) rapidly cooling and compressing the melted raw materials at room temperature to prepare electrolyte glass in the set thickness; and (d) elevating the temperature of the electrolyte glass to the set temperature to remove the stress in the set temperature range; and (e) heating the electrolyte glass at higher temperature than the previous step to crystallize the electrolyte glass. |
