Abstract
Reaction mechanism during the mechanical milling synthesis of sulfide based solid electrolytes in the system Li2S-P2S5 was investigated in order to develop a speedy preparation process of the solid electrolytes. The sample preparation by using only milling process without heat treatment did not cause the increase in ion conductivity of the samples. On the other hand, the preparation process by using not only the milling but also heat treatments at a temperature around 210°C resulted in the increasing of lithium ion conductivity of the samples. This result suggested that the milling process combined with the heat treatment was very effective to prepare the amorphous samples in the system Li2S-P2S5 with high ion conductivity.
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