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Preparation of Li 2 S–P 2 S 5 Amorphous Solid Electrolytes by Mechanical Milling
Author(s) -
Hayashi Akitoshi,
Hama Shigenori,
Morimoto Hideyuki,
Tatsumisago Masahiro,
Minami Tsutomu
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00685.x
Subject(s) - amorphous solid , materials science , fast ion conductor , electrolyte , activation energy , solid solution , quenching (fluorescence) , lithium (medication) , chemical engineering , conductivity , analytical chemistry (journal) , mineralogy , crystallography , metallurgy , chemistry , electrode , organic chemistry , medicine , physics , quantum mechanics , engineering , fluorescence , endocrinology
Amorphous solid electrolytes in the Li 2 S–P 2 S 5 system were prepared successfully from a mixture of crystalline Li 2 S and P 2 S 5 , using a mechanical milling technique. The amorphous‐forming region was extended to higher Li 2 S compositions by mechanical milling, compared with melt quenching. The pelletized samples of the 75Li 2 S·25P 2 S 5 (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.