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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/2127

Title: Characterization of LT-LiXO1-YNIYO2 electrodes for rechargeable lithium cells
Authors: Gummow, RJ
Thackeray, MM
Keywords: Lithiated spinel
Rechargeable lithium cells
Electrochemical performance
Issue Date: Dec-1993
Publisher: Electrochemical Society Inc
Citation: Gummow, RJ and Thackeray, MM. 1993. Characterization of LT-LiXO1-YNIYO2 electrodes for rechargeable lithium cells. Journal of Electrochemical Society, vol. 140(12), pp 3365-3368
Abstract: LT-LiC0.9Ni0.1O2 prepared at 400 degrees C with a structure that is intermediate between an ideal lithiated spinel and a layered structure has been investigated as an electrode in rechargeable Lithium cells; it delivers a voltage vs. pure lithium that is significantly lower than the voltage provided by its high-temperature analogue, HT-LiCo0.9Ni0.1O2, (synthesized at 900 degrees C). The rechargeability of Li/LT-LiCo0.9Ni0.1O2 cells can be improved by leaching some lithium and a small amount of cobalt from LT-LiCo0.9Ni0.1O2 by acid treatment and loading the cells in a charged state. The improvement in electrochemical performance is attributed to the formation of a defect spinel phase Li-0.8[Co1.6Ni0.2]O-4 in which the lithium ions adopt the tetrahedral A sites and the cobalt and nickel ions the B sites of an A[B-2]O-4 spinel.
URI: http://hdl.handle.net/10204/2127
ISSN: 0013-4651
Appears in Collections:General science, engineering & technology

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