NDLI: Synthesis and structural properties of lithium titanium oxide powder as-synthesized by two step calcination process

Content Provider	Springer Nature Link
Author	Kim, Soo Ho Park, Hoon Jee, Seung Hyun Ahn, Ho Sang Kim, Dong Joo Choi, Ji Won Yoon, Seok Jin Yoon, Young Soo
Copyright Year	2009
Abstract	A two-step calcination synthesis, considering the potential for mass production, of lithium titanium oxide powder was carried out to fabricate a single Li$_{4}$Ti$_{5}$O$_{12}$ phase, which is useful for anode electrode material of Li-based rechargeable battery as well as an electrode for supercapacitor. The final composition is controlled by adding more TiO$_{2}$ powder into powder gained at one calcination process during the two calcination process. We investigated the influence of excess TiO$_{2}$ on the structural characteristics of lithium titanium oxide synthesized by the two-step calcination method. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) measurements showed that the as-synthesized powder had a spinel crystal structure as well as A composition of 4: 5: 12. In addition, a high resolution transmission electron microscopy (HRTEM) analysis revealed that the fabricated powder exhibited a single crystalline phase formation. These results indicated that the powder synthesized in the one-step calcination process showed coexistence crystalline phases, which are the Li$_{4}$Ti$_{5}$O$_{12}$ and Li$_{2.39}$Ti$_{3.4}$O$_{8}$ phase. However, in the two-step calcination process, the powder synthesized showed the single crystalline Li$_{4}$Ti$_{5}$O$_{12}$ phase. A very uniform grain size of the as-synthesized powder was shown in a field emission scanning electron microscopy (FESEM). These results suggested that the two-step calcination process can be used for synthesis of single crystalline Li$_{4}$Ti$_{5}$O$_{12}$ powder with uniform grain shape and provide motivation to pursue mass production of lithium titanium based oxide powder for bulk type batteries.
Starting Page	485
Ending Page	488
Page Count	4
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	26
Issue Number	2
e-ISSN	19757220
Language	English
Publisher	Springer US
Publisher Date	2009-03-12
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lithium Titanium Oxide Two Step Calcination Process Oxygen Content Rechargeable Battery High Resolution Transmission Electron Microscopy Biotechnology Materials Science Catalysis Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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