Effect of Li2O–В2O3–SiO2 glass on conductivity, microstructure, and stability of Li2ZrO3 solid electrolyte

(100–x) Li2ZrO3–x 65Li2O · 27B2O3 · 8SiO2 (x = 1–8 wt. %) composites have been prepared. Relative density of the composites is shown to be higher than that of the sintered Li2ZrO3. According to the X-ray diffraction analysis, the formation of an impurity phase is observed at x of 8 wt. %, while other samples demonstrate peaks corresponding to monoclinic Li2ZrO3. Conductivity studies reveal that the application of the lithium borosilicate glass as sintering additives increases the total conductivity from ~ 10–7 to ~ 10–5 S · cm–1. The Li | 94Li2ZrO3–6LBS|Li electrochemical cell has been tested for the stability against molten lithium at 250 °C for 336 h and superior stability of the composite has been proven. Based on the obtained results, the 94Li2ZrO3–6LBS composite can be recommended for application in lithium batteries.