Preparation of Li2S–P2S5 Amorphous Solid Electrolytes by Mechanical Milling
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- 1 February 2001
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 84 (2) , 477-79
- https://doi.org/10.1111/j.1151-2916.2001.tb00685.x
Abstract
Amorphous solid electrolytes in the Li2S–P2S5 system were prepared successfully from a mixture of crystalline Li2S and P2S5, using a mechanical milling technique. The amorphous‐forming region was extended to higher Li2S compositions by mechanical milling, compared with melt quenching. The pelletized samples of the 75Li2S·25P2S5 (on a mole‐percent basis) amorphous powders obtained by mechanical milling for 20 h exhibited high conductivity (2 × 10−4 S/cm at room temperature) and an activation energy for conduction of 34 kJ/mol. The lithium‐ion transport number of the amorphous powders was almost unity.Keywords
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