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Preparation of Lithium Ion Conductive Li4.2Al0.2Si0.8O4 Thin Films Using Sol-Gel Process

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Abstract:

Thin films of lithium ion conductive ceramic Li4+xAlxSi1-xO4 were fabricated on Au substrate using sol-gel process. The sol of Li-Al-Si-O was spread on Au substrate using a spin coater, and it was gelated at room temperature. The gel was calcinated at 400 °C and heat-treated at high temperatures between 500 °C and 800 °C in air. The addition of poly(vinylpyrrolidone) (PVP) was effective in stabilizing the sol. Furthermore, the morphology of the obtained thin film was changed by the PVP additive. Li4+xAlxSi1-xO4 thin film prepared at 800 °C exhibited a Li+ ion conductivity of 10-8 S cm-1 at room temperature.

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Periodical:

Key Engineering Materials (Volume 301)

Pages:

91-94

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.301.91

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Online since:

January 2006

Authors:

Yasuhiro Isshiki, Kaoru Dokko, Jun Ichi Hamagami, Takashi Takei, Kiyoshi Kanamura

Keywords:

Rechargeable Lithium Battery, Sol-Gel (SG), Solid Electrolyte, Thin Film

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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