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http://dx.doi.org/10.4313/JKEM.2004.17.10.1085

Charge-discharge Properties of Positive Active Material Li(Cr0.4Mn0.6)O2  

Wee, Sung-Dong (전남대학교 전기공학과)
Jeong, In-Seong (전남대학교 전기공학과)
Gu, Hal-Bon (전남대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.17, no.10, 2004 , pp. 1085-1089 More about this Journal
Abstract
An impedance properties of the positive active material Li(Cr$_{0.4}$Mn$_{0.6}$)O$_2$ are measured by the changeable trend to the time. The charge-discharge capacities of 297 mAh(g)$^{-1}$ 175 mAh(g)$^{-1}$ are obtained by the made cell with the active material that the Cr was added to LiMnO$_2$ to prevent structural degradation of an electrode active material with impedance of 75 Ω to get at an initial hour. Resultantly, these variations which the impedances enhanced continually, were not watched the impeditive variations as the results of the delay time that the positive thin films and the references have been soaked all together in the solution of electrolyte of 1M LiPF$_{6}$ EC/DEC(l/2). Accordingly, it means an amount increased of the discharged capacities in the view of the results that the impeditive values were decreased are known already through a authorized paper.per.
Keywords
Electrochemical reaction; Charge and discharge capacities; Impedance;
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