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http://dx.doi.org/10.4191/KCERS.2004.41.10.735

Electrochemical Properties of LiMn1.92Co0.08O4 and LiNi0.7Co0.3O2 Mixtures Prepared by a Simplified Combustion Method  

Song, Myoungyoup (Division of Advanced Materials Engineering, Research Center of Advanced Materials Development. Engineering Research Institute, Chonbuk National University)
Kwon, IkHyun (Division of Advanced Materials Engineering, Research Center of Advanced Materials Development. Engineering Research Institute, Chonbuk National University)
Kim, Hunuk (Division of Advanced Materials Engineering, Research Center of Advanced Materials Development. Engineering Research Institute, Chonbuk National University)
Publication Information
Journal of the Korean Ceramic Society / v.41, no.10, 2004 , pp. 735-741 More about this Journal
Abstract
$LiMn_{1.92}Co_{0.08}O_4$ and $LiNi_{0.7}Co_{0.3}O_2$ synthesized by a simplified combustion method had good electrochemical properties. Mixtures $LiMn_{1.92}Co_{0.08}O_4$-x wt$\%$ $LiNi_{0.7}Co_{0.3}O_2$ (x=9, 23, 33, 41, and 47) were prepared by milling for 30 min and their electrochemical properties were investigated. The electrode with x=9 had a relatively large first discharge capacity (109.9 mAh/g at 0.1 C) and good cycling performance. The decrease in the discharge capacity of the mixture electrodes with cycling is considered to result mainly from the degradation of $LiNi_{0.7}Co_{0.3}O_2$, caused by coating of $LiNi_{0.7}Co_{0.3}O_2$ with Mn dissolved from $LiMn_{1.92}Co_{0.08}O_4$.
Keywords
A Simplified combustion method; Mixture electrodes; First discharge Capacity; Cycling performance;
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