Li4Ti2.5Cr2.5O12 as anode material for lithium battery
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Li4Ti2.5Cr2.5O12 as anode material for lithium battery
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| Creator |
Ganesan, M.
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| Subject |
Lithium batteries
Electrochemical Power Sources |
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| Description |
Chromium-substituted Li4Ti5O12 has been investigated
as a negative electrode for future lithium batteries. It
has been synthesized by a solid-state method followed by
quenching leading to a micron-sized material. The minimum
formation temperature of Li4Ti2.5Cr2.5O12 was found to be
around 600 °C using thermogravimetric and differential
thermal analysis. X-ray diffraction, scanning electron microscopy,
cyclic voltammetry (CV), impedance spectroscopy, and
charge–discharge cycling were used to evaluate the synthesized
Li4Ti2.5Cr2.5O12. The particle size of the powder was
around 2–4 μm. CV studies reveal a shift in the deintercalation
potential by about 40 mV, i.e., from 1.54 V for
Li4Ti5O12 to 1.5 V for Li4Ti2.5Cr2.5O12. High-rate cyclability
was exhibited by Li4Ti2.5Cr2.5O12 (up to 5 C) compared to
the parent compound. The conduction mechanism of the
compound was examined in terms of the dielectric constant
and dissipation factor. The relaxation time has been evaluated
and was found to be 0.07 ms. The mobility was found to be
5.133×10−6 cm2 V−1 s−1.
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| Publisher |
Springer-Verlag
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/192/1/065-2008.pdf
Ganesan, M. (2008) Li4Ti2.5Cr2.5O12 as anode material for lithium battery. Ionics, 14 (5). pp. 395-401. ISSN 0947-7047 |
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| Relation |
http://cecri.csircentral.net/192/
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