Abstract
Titanium sulfide thin film electrodes were prepared by the pulsed laser deposition method using a KrF excimer laser. Thin films of various compositions were prepared under several deposition conditions such as Ar gas pressure, laser fluence, and target-substrate distance. The thickness of the titanium sulfide thin film prepared under Ar gas pressure of 0.01 Pa, the pulse energy of 200 mJ/pulse, and the distance of 5 cm between the target and the substrate was ca. 400 nm. The films prepared at room temperature showed no peaks in the XRD pattern and no periodic lattice fringe in high-resolution transmission electron microscopic images, suggesting that they were amorphous. An all-solid-state cell using a TiS4.0 thin film electrode formed on a pelletized Li2S–P2S5 glass–ceramic electrolyte showed the reversible capacity of 543 mAh g−1, which was higher than that of a cell using a TiS1.7 film. The former solid-state cell retained higher capacity for 20 cycles at room temperature.
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This research was financially supported by Japan Science and Technology Agency (JST), Core Research for Evolutional Science and Technology (CREST) project.
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Matsuyama, T., Sakuda, A., Hayashi, A. et al. Preparation of amorphous TiS x thin film electrodes by the PLD method and their application to all-solid-state lithium secondary batteries. J Mater Sci 47, 6601–6606 (2012). https://doi.org/10.1007/s10853-012-6594-9
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DOI: https://doi.org/10.1007/s10853-012-6594-9