Synthesis, Characterization, and Electrochemical Properties of LiCrxNiyMn2−x−yO4 Spinels as Cathode Material for 5 V Lithium Battery
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Synthesis, Characterization, and Electrochemical Properties
of LiCrxNiyMn2−x−yO4 Spinels as Cathode Material for
5 V Lithium Battery
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| Creator |
Rajakumar, S.
Thirunakaran, R. Sivashanmugam, A. Gopukumar, S. |
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| Subject |
Lithium batteries
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| Description |
Sol–gel assisted spinel LiCrxNiyMn2−x−yO4 0 x 0.4 and 0 y 0.4 has been synthesized. The thermal study of the
precursor was carried out by thermogravimetric and differential thermal analyses. Furthermore, the material has been subjected to X-ray diffraction, scanning electron microscopy, Fourier transform IR spectroscopy analysis, X-ray photoelectron spectroscopy, cyclic voltammetry studies, and electrochemical charge–discharge studies. The X-ray diffraction of LiCrxNiyMn2−x−yO4 matches well with the Joint Committee on Powder Diffraction Standard card no. 35-782, confirming the formation of a single-phase spinel.
Charge–discharge studies were carried out between 3 and 5 V to understand the electrochemical behavior of the undoped and
doped spinels. LiCr0.25Ni0.25Mn1.5O4 calcined at 850°C possesses a particle size of around 70 nm and exhibits an initial discharge
capacity of 105 mAh g−1 stabilizing at 98 mAh g−1 over the investigated 20 cycles. However, maleic acid derived
LiCr0.25Ni0.25Mn1.5O4 delivers a stable higher discharge capacity of 115 mAh g−1 over the investigated 20 cycles and is a promising 5 V cathode material.
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| Publisher |
The Electrochemical Society
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| Date |
2010
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/337/1/2010-082.pdf
Rajakumar, S. and Thirunakaran, R. and Sivashanmugam, A. and Gopukumar, S. (2010) Synthesis, Characterization, and Electrochemical Properties of LiCrxNiyMn2−x−yO4 Spinels as Cathode Material for 5 V Lithium Battery. Journal of the Electrochemical Society, 157 (3). A333-A339. ISSN 0013-4651 |
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| Relation |
http://cecri.csircentral.net/337/
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