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Mechanochemical Synthesis of New Amorphous Materials of 60Li 2 S·40SiS 2 with High Lithium Ion Conductivity
Author(s) -
Morimoto Hideyuki,
Yamashita Hideki,
Tatsumisago Masahiro,
Minami Tsutomu
Publication year - 1999
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.1151-2916.1999.tb01923.x
Subject(s) - amorphous solid , lithium (medication) , conductivity , materials science , fast ion conductor , ion , quenching (fluorescence) , electrolyte , electrical resistivity and conductivity , chemical engineering , mineralogy , inorganic chemistry , chemistry , crystallography , organic chemistry , electrode , medicine , physics , electrical engineering , endocrinology , quantum mechanics , engineering , fluorescence
New amorphous materials were mechanochemically synthesized by use of crystalline starting materials of Li 2 S and SiS 2 . The conductivity of a mechanochemically prepared sample of 60Li 2 S40SiS 2 (mol%) after a milling for 20 h was around 10 ‐4 Scm ‐1 at room temperature. This conductivity was comparable to that of the corresponding glassy powders prepared by twin‐roller rapid quenching of melt and then pulverizing. The transport number of lithium ions in the mechanochemically prepared sample was nearly unity. Mechanochemical synthesis is a promising way to produce new solid electrolytes for solid‐state lithium secondary batteries.