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http://dx.doi.org/10.5012/bkcs.2010.31.02.360

Synthesis of Li4Ti5O12 Thin Film with Inverse Hemispheric Structure  

Lee, Sung-Je (Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Jung, Kwang-Hee (Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Park, Bo-Gun (Department of Advanced Materials Engineering, Kyonggi University)
Kim, Ho-Gi (Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Park, Yong-Joon (Department of Advanced Materials Engineering, Kyonggi University)
Publication Information
Bulletin of the Korean Chemical Society / v.31, no.2, 2010 , pp. 360-364 More about this Journal
Abstract
$Li_4Ti_5O_{12}$ thin film with inverse hemispheric structure was fabricated on a Pt/Ti/$SiO_2$/Si substrate by the sol-gel and dip coating method for use as an anode for 3-dimensional (3D) thin-film batteries. Polystyrene (PS) beads of 400 nm diameter were used to prepare the template for the inverse hemispheric structure. A coating solution prepared using precursor sources was dropped on the template-deposited substrates, which were then calcinated at $400^{\circ}C$. The template was removed by calcination, and the inverse hemispheric structure was successfully formed by an annealing process. The cyclic performance during high-rate charge/discharge processes of the $Li_4Ti_5O_{12}$ film with inverse hemispheric structure was superior to that of the flat $Li_4Ti_5O_{12}$ film.
Keywords
Template; Inverse hemispheric structure; Sol-gel; $Li_4Ti_5O_{12}$; Thin film;
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