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Synthesis and Characterization of Novel, High-Capacity, Layered $LiMn_{0.9}Ni_{0.05}Fe_{0.05}O_2$ as a Cathode Material for Li-Ion Cells

Suresh, P and Shukla, AK and Munichandraiah, N (2005) Synthesis and Characterization of Novel, High-Capacity, Layered $LiMn_{0.9}Ni_{0.05}Fe_{0.05}O_2$ as a Cathode Material for Li-Ion Cells. In: Electrochemical and Solid-State Letters, 8 (6). A263-A266.

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Abstract

A novel layered-material, $LiMn_{0.9}Ni_{0.05}Fe_{0.05}O_2$ with $O3-LiCoO_2$ structure and high electrochemical stability, has been synthesized by an ion exchange method. Specific capacity values of 250 mAh $g^-1$ at C/10 rate and 210 mAh $g^-1$ at C/2 rate have been obtained with little loss in capacity during 30 charge-discharge cycles conducted in the study. The X-ray diffraction and infrared spectroscopy data on the cycled samples suggest that the layered structure in $LiMn_{0.9}Ni_{0.05}Fe_{0.05}O_2$ is preserved after repeated charge-discharge cycles supporting stable specific capacity values. Owing to the high capacity and good stability, $LiMn_{0.9}Ni_{0.05}Fe_{0.05}O_2$ is attractive as a cathode material in Li-ion cells.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Electrochemical Society.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 15 Mar 2007
Last Modified: 19 Sep 2010 04:35
URI: http://eprints.iisc.ernet.in/id/eprint/9757

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