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Preparation of Highly Lithium‐Ion Conductive 80Li 2 S·20P 2 S 5 Thin‐Film Electrolytes Using Pulsed Laser Deposition
Author(s) -
Sakuda Atsushi,
Hayashi Akitoshi,
Hama Shigenori,
Tatsumisago Masahiro
Publication year - 2010
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.1551-2916.2009.03442.x
Subject(s) - ionic conductivity , thin film , lithium (medication) , pulsed laser deposition , electrolyte , deposition (geology) , materials science , fast ion conductor , mineralogy , ionic bonding , ion , analytical chemistry (journal) , conductivity , chemistry , nanotechnology , electrode , organic chemistry , medicine , paleontology , endocrinology , sediment , biology
Highly lithium‐ion conductive Li 2 S–P 2 S 5 thin films were prepared using pulsed laser deposition at room temperature. The ambient Ar gas pressure during deposition strongly affected the thin films' chemical compositions and local structures. The chemical composition and the local structure of the 80Li 2 S·20P 2 S 5 thin film prepared under 5 Pa showed good agreement with those of the highly lithium‐ion conducting 80Li 2 S·20P 2 S 5 glass powder prepared by mechanical milling. The ionic conductivity at 25°C and the activation energy for conduction of the as‐deposited 80Li 2 S·20P 2 S 5 thin films were, 7.9 × 10 −5 S/cm and 43 kJ/mol, respectively. The ionic conductivity of the 80Li 2 S·20P 2 S 5 thin film was increased to 2.8 × 10 −4 S/cm through heat treatment. The highly lithium‐ion conducting thin‐films reported in this study are promising electrolytes for developing all‐solid‐state lithium batteries.