Article ID Journal Published Year Pages File Type
7735969 Journal of Power Sources 2014 9 Pages PDF
Abstract
This paper provides the results of impedance measurements on commercially available LiCoO2|C coin-type cells. The impedance response was shown to be extremely sensitive to state-of-charge, overcharge, and over-discharge. Interestingly, the impedance showed a persistent change to the electrochemical characteristics of a coin cell subject to overcharge; whereas, the electrochemical characteristics returned to normal for a coin cell subject to over-discharge. A measurement model analysis was used to show the reversibility of the impedance behavior of an over-discharged cell and the irreversibility of the impedance response of an overcharged cell.
Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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