Superionic conduction in rapidly quenched Li2S-SiS2-Li3PO4 glasses
Superionic conduction in rapidly quenched Li2S-SiS2-Li3PO4 glasses
复制标题
DOI：
10.2109/jcersj.101.1315
复制
发表时间：
1993-11
影响因子：
1.1
通讯作者：
M. Tatsumisago;K. Hirai;T. Minami;K. Takada;S. Kondo
中科院分区：
文献类型：
--
作者：
M. Tatsumisago;K. Hirai;T. Minami;K. Takada;S. Kondo
采用双辊快速淬火技术在(0.6Li2S⋅0.4SiS2)-Li3PO4体系中制备了锂离子导电玻璃。测定含有 0-40mol% Li3PO4 的玻璃状样品的玻璃化转变温度 (Tg) 和结晶温度 (Tc)。在含有 5mol% Li3PO4 的组合物中，25°C 时的电导率值 (σ25) 最大化，传导活化能 (Ea) 最小化；最大σ25值高达9×10-4S⋅cm-1。由于相同成分下 Tg 和 Tc 之间的差异也最大，因此得出结论，少量 Li3PO4 的掺杂改善了玻璃的结晶稳定性和锂离子电导率。
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.