Fabrication of Solid Thin Film Electrolyte and LiCoO2 by Aerosol Flame Pyrolysis Deposition

Abstract

Fabrication of Solid Thin Film Electrolyte and LiCoO2 by Aerosol Flame Pyrolysis Deposition

Dong-wook Shina, Ki-hyun Choa, Sun-hwa Leea,Tae-won Leea,Sang-won Koa , Jang-won Oha and Sung-chul Yib

aDivision of Material Science & Engineering, Hanyang University 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Korea bDivision of Chemical Engineering, Hanyang University 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Korea

*Corresponding author: dwshin@hanyang.ac.kr

Rechargeable thin film battery has various applications to electronic devices such as micro-electro-mechanical system, smart card, medical appliances, and so on. To realize the thin film battery, solid electrolyte with electrochemical stability and lithium ion mobility is indispensable and the necessity of solid electrolyte expedited the related researches during past tens of years. In this study, we employed the completely new method to synthesize the oxide glasses and LiCoO2, which are called "Aerosol Flame Pyrolysis Deposition"method. The similar method was employed to produce the preform of optical fiber or optical waveguide devices based on oxide glasses applied to optical communication networks [1]. In the deposition process, single or multi-component amorphous oxide nano particles (soot) are synthesized by supplying metal halide sources such as chloride in the form of gas into oxy-hydrogen flame of ~1800°C. The deposited film composed of synthesized nano particles is subsequently consolidated into solid film by high temperature heat treatment. The whole processes are carried out under normal air atmosphere with only optional control for moisture. In the research, the aerosol flame pyrolysis deposition was applied to fabricate glass electrolyte film of Li2O-B2O3-P2O5 and cathodes.

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