A simple gel route to synthesize nano-Li4Ti5O12 as a high-performance anode material for Li-ion batteries

Nano-Li 4 Ti 5 O 12 powders were synthesized by a simple gel route with acrylic acid, tetrabutyl titanate, and lithium nitrate as the precursors that were made into gels through thermal polymerization. The Li 4 Ti 5 O 12 powders were obtained by calcination of the gels at 700, 750, and 800 °C. They...

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Bibliographic Details
Published in:Journal of materials science 2009, Vol.44 (1), p.198-203
Main Authors: Wang, D., Ding, N., Song, X. H., Chen, C. H.
Format: Article
Language:English
Subjects:
Acrylic acid
Anodes
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Differential thermal analysis
Electrochemical analysis
Electrode materials
Emission analysis
Field emission microscopy
Gels
Gravimetric analysis
Lithium-ion batteries
Materials Science
Polymer Sciences
Rechargeable batteries
Roasting
Solid Mechanics
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Summary:Nano-Li 4 Ti 5 O 12 powders were synthesized by a simple gel route with acrylic acid, tetrabutyl titanate, and lithium nitrate as the precursors that were made into gels through thermal polymerization. The Li 4 Ti 5 O 12 powders were obtained by calcination of the gels at 700, 750, and 800 °C. They were characterized by thermal gravimetric analysis, differential thermal analysis, X-ray diffraction, and field emission scanning electron microscopy. The electrochemical performance of these nano-Li 4 Ti 5 O 12 powders was examined with galvanostatic cell cycling. The average particle size of the 700-, 750-, and 800 °C-calcined powders is about 70, 120, and 400 nm, respectively. The 750 °C-calcined powder exhibits a high capacity of over 160 mAh/g after 100 cycles and a good rate capability with a capacity of 122 mAh/g even at 10C rate.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-008-3104-1