LITHIUM CONDUCTING AMORPHOUS SOLID ELECTROLYTES OBTAINED BY EXPLOSIONMETHOD

Lithium conducting amorphous solid electrolytes were prepared by a new explosion method. One of the remarkable characteristics of the new ex plosion method is that perfect ball-shaped glasses without any microcr ack are obtained by vitrification. Electrical conductivity of the glas s prepared from the lithium conducting Li1.3Al0.3Ti1.7 (PO4) 3 polycry stal with LiCl was appreciably lower than that of the excellent Li+ io nic conducting crystal, Li1.3Al0.3Ti1.7(PO4)3. By the vitrification of the LiCl mixed Li1.4Al0.4Ti0.85Ge0.75(PO4)3 Crystal where the Ti site was partially substituted for a smaller Ge'' ion, the activation ener gy for a lithium migration became smaller and the conductivity of the glass was enhanced. The crystallization temperatures (T(x)) of the gla sses ranged from 420 to 515-degrees-C. The conductivity of the glass w ith the partial Ti site replacement with Ge4+ became higher at around 400-degrees-C than that of the polycrystalline solid, which shows one of the highest ionic conductivities in lithium ionic conductors.