Paper Title:

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

Periodical Key Engineering Materials (Volume 301)
Main Theme Electroceramics in Japan VIII
Edited by Masaru Miyayama, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki
Pages 91-94
DOI 10.4028/
Citation Yasuhiro Isshiki et al., 2006, Key Engineering Materials, 301, 91
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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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.