Abstract
Fine powder and highly oriented thin film TiS2 were prepared by a reaction between TiCl4 and H2S in low-pressure glow discharge at low substrate temperatures (≦450°C). The products were investigated by changing the reaction conditions, e.g. the substrate temperature, the applied rf power between electrodes, and the reactant ratio ([H2S]/[TiCl4]). The fine powder product was an aggregate of plate-like crystallites of some ten nm in width and less than ten nm in thickness. Lithium batteries using the fine TiS2 powder showed a flat discharge voltage around 2.2 V up to 100% utilization. Submicron TiS2 crystallites had their lattice planes perpendicular to the substrate in the thin films having thicknesses greater than 1 μm. This orientation is expected to be favorable for the application to lithium rechargable batteries.
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References
S.M. Ojha: Phys. Thin Films12, 237 (1982)
E. Neuenschwander: J. Less-Common Metals11, 365 (1966)
M.S. Whittingham: Prog. Solid State Chem.12, 41 (1978)
S. Motojima, K. Itoh, Y. Takahashi, K. Sugiyama: Bull. Chem. Soc. Jpn.51, 3240 (1978)
K. Kanehori, F. Kirino, K. Miyauchi, T. Kudo: Denki Kagadu53, 287 (1985)
K. Kanehori, Y. Ito, F. Kirino, K. Miyauchi, T. Kudo: Solid State Ionics18/19, 818 (1986)
V. Buck: Thin Solid Films139, 157 (1986)
P.D. Fleischauer: Thin Solid Films154, 309 (1987)
M.S. Whittingham, J.A. Panella: Mater. Res. Bull.16, 37 (1981)
T. Yamamoto, S. Kikkawa, M. Koizumi: J. Electrochem. Soc.131, 1343 (1984)
T. Yamamoto, S. Kikkiawa, M. Koizumi: Solid State Ionics17, 63 (1985)