The Impedance of Lithium-ion Batteries¹

T. L. Kulova^{a, z}, V. A. Tarnopol’skii^b, and A. M. Skundin^a

^a Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

^b The Group “Russkie Akkumulyatory”, Moscow, Russia

Received February 13, 2008

Abstract—Cylindrical and flat one-layer lithium-ion batteries, as well as symmetrical cells with like elec-
trodes, are studied using electrochemical impedance spectroscopy. Equivalent circuit is suggested, its parame-
ters found, and the activation energies estimated for different stages of the electrode process.

Key words: electrochemical impedance, lithium-ion battery, diffusion, equivalent circuit

DOI: 10.1134/S1023193509010066

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