Crystallization of the 80Li(2)S . 20P(2)S(5) (mol%) glassy powders derived
from mechanical milling improved their conductivities. The obtained glass-c
eramic exhibited high conductivity of approximately 10(-3) S cm(-1) at room
temperature. The stabilization of the high-temperature phase of Li7PS6 cry
stal in the glass matrix brought about those high conductivities.