Superionic Conduction in Rapidly Quenched Li2S-SiS2-Li3PO4 Glasses

作者：Masahiro Tatsumisago, Kouichi Hirai, Tsutomu Minami, Kazunori Takada, Shigeo Kondô · 发表于：Journal of the Ceramic Society of Japan · 年份：1993 · DOI：10.2109/jcersj.101.1315 · 被引用次数：72 · 研究领域：Glass properties and applications、Advanced Battery Materials and Technologies、Advancements in Battery Materials

Lithium ion conducting glasses were prepared in the system (0.6Li2S⋅0.4SiS2)-Li3PO4 by twin-roller rapid quenching. The temperatures of glass transition (Tg) and crystallization (Tc) were determined for the glassy samples with 0-40mol% Li3PO4. The conductivity values at 25°C (σ25) were maximized and the activation energies (Ea) for conduction were minimized at the composition with 5mol% Li3PO4; the maximum σ25 value was as high as 9×10-4S⋅cm-1. Since the difference between Tg and Tc was also maximized at the same composition, it was concluded that the doping of small amounts of Li3PO4 improved both the glass stability against crystallization and the lithium ion conductivities.