Influence of capacity fading on commercial lithium-ion battery impedance

Tetsuya Osaka, S. Nakade, M. Rajamäki, Toshiyuki Momma

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

The impedance spectrum of prismatic commercial Li-ion batteries is measured at various states of charge before and after the charge-discharge cycles and storage. The measured impedance is interpreted with a previously proposed equivalent circuit made up of anode and cathode in which the cathode component is composed of two particle size factors. The values corresponding to the characteristics of both electrodes are obtained by a fitting technique. The obtained values suggest that the capacity fade of the Li-ion battery due to the cycles is mainly caused by the increase of interfacial resistance of the cathode and a decrease in the anode capacity. These results suggest the validity of the equivalent circuit to interpret the causes of capacity fade.

Original languageEnglish
Pages (from-to)929-933
Number of pages5
JournalJournal of Power Sources
Volume119-121
DOIs
Publication statusPublished - 2003 Jun 1

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fading
electric batteries
Cathodes
lithium
cathodes
impedance
equivalent circuits
Equivalent circuits
Anodes
anodes
ions
cycles
Particle size
Electrodes
electrodes
causes
Lithium-ion batteries

Keywords

  • Capacity fade
  • Impedance
  • Li-ion battery

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Influence of capacity fading on commercial lithium-ion battery impedance. / Osaka, Tetsuya; Nakade, S.; Rajamäki, M.; Momma, Toshiyuki.

In: Journal of Power Sources, Vol. 119-121, 01.06.2003, p. 929-933.

Research output: Contribution to journalArticle

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AB - The impedance spectrum of prismatic commercial Li-ion batteries is measured at various states of charge before and after the charge-discharge cycles and storage. The measured impedance is interpreted with a previously proposed equivalent circuit made up of anode and cathode in which the cathode component is composed of two particle size factors. The values corresponding to the characteristics of both electrodes are obtained by a fitting technique. The obtained values suggest that the capacity fade of the Li-ion battery due to the cycles is mainly caused by the increase of interfacial resistance of the cathode and a decrease in the anode capacity. These results suggest the validity of the equivalent circuit to interpret the causes of capacity fade.

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