The 70Li2S(30-x)P2S5·xP2S3 (mol%) glass and glass-ceramic electrolytes were prepared via mechanochemical route using a planetary ball mill apparatus. Ball-milling condition and glass composition for achieving high Li+ ion conductivity in glass-ceramic electrolytes were investigated. The glass-ceramics prepared using ZrO2 media (500 balls, 4 mm in diameter) exhibited higher conductivity than those prepared using Al2O3 media (10 balls, 10 mm in diameter). The former experiment condition was appropriate for preparing homogeneous glasses. The substitution of 1 mol% of P2S3 for P2S5 enhanced the conductivity of the glass-ceramics and the maximum conductivity was 5.4 x 10− 3S/cm at room temperature. The Li7P3S11 analogous phase, Li7P3S11-z, was formed at the composition with 1 mol% P2S3 and the Li7P3S11-z phase would have higher conductivity than the Li7P3S11 crystal without substitution.

Preparation and Ionic Conductivity of Li7P3S11−z Glass-Ceramic Electrolytes. A.Hayashi, K.Minami, S.Ujiie, M.Tatsumisago: Journal of Non-Crystalline Solids, 2010, 356[44-49], 2670-3