Influence of overcharge and over-discharge on the impedance response of LiCoO2 vertical bar C batteries
JOURNAL OF POWER SOURCES, vol.270, pp.92-100, 2014 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 270
- Publication Date: 2014
- Doi Number: 10.1016/j.jpowsour.2014.07.038
- Journal Name: JOURNAL OF POWER SOURCES
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.92-100
- Keywords: Overcharge, Over-discharge, Capacity loss, Self-charge, Self-discharge, Impedance spectroscopy, LITHIUM-ION BATTERIES, MEASUREMENT MODELS, ERROR STRUCTURE, SPECTROSCOPY, PERFORMANCE, LICOO2, CELLS, CORROSION, MECHANISM, CATHODES
- Eskisehir Osmangazi University Affiliated: No
Abstract
This paper provides the results of impedance measurements on commercially available LiCoO2 vertical bar 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. (C) 2014 Elsevier B.V. All rights reserved.