Preparation of Li4Ti5O12 electrode thin films by a mist CVD process with aqueous precursor solution

Journal of Asian Ceramic Societies

卷:3

Kiyoharu Tadanaga¹  Masahiro Tatsumisago¹  Akihiro Yamaguchi¹  Akitoshi Hayashi¹  Jadra Mosa²  Mario Aparicio² 

[1] Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan;

[2] Instituto de Cerámica y Vidrio, Consejo Superior de Investigaciones Científicas, Kelsen 5 (Campus de Cantoblanco), 28049 Madrid, Spain;

关键词: Li4Ti5O12 thin film;    Aqueous solution;    Mist-CVD process;    Lithium ion batteries;   

DOI  :  10.1016/j.jascer.2014.11.003

来源: DOAJ

【 摘 要 】

Spinel Li4Ti5O12 thin films were prepared by a mist CVD process, using an aqueous solution of lithium nitrate and a water-soluble titanium lactate complex as the source of Li and Ti, respectively. In this process, mist particles ultrasonically atomized from a source aqueous solution were transferred by nitrogen gas to a heating substrate to prepare thin films. Scanning electron microscopy observation showed that thin films obtained by this process were dense and smooth, and thin films with a thickness of about 500 nm were obtained. In the X-ray diffraction analysis, formation of Li4Ti5O12 spinel phase was confirmed in the obtained thin film sintered at 700 °C for 4 h. The cell with the thin films as an electrode exhibited a capacity of about 110 mAh g−1, and the cell showed good cycling performance during 10 cycles.

【 授权许可】

Unknown