Influence of overcharge and over-discharge on the impedance response of LiCoO2 vertical bar C batteries

Erol S., Orazem M. E., Muller R. P.

JOURNAL OF POWER SOURCES, cilt.270, ss.92-100, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 270
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.jpowsour.2014.07.038
  • Dergi Adı: JOURNAL OF POWER SOURCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.92-100
  • Anahtar Kelimeler: 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
  • Eskişehir Osmangazi Üniversitesi Adresli: Hayır

Özet

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.