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Computer modeling of negative electrode operation in lithium-ion battery: Model of equal-sized grains, galvanostatic discharge mode, calculation of characteristic parameters

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Abstract

A computer simulation of the negative electrode (anode) operation in a lithium-ion battery is performed. A complete research program is carried out in accordance with the recommendations of the theory of porous electrodes: the “model of equal-sized grains of two types” was studied, percolation properties of the anode active layer were researched, values of effective coefficients were calculated for charge transfer and mass transport, a complete system of equations describing operation of the anode is presented. Two specific cases of galvanostatic mode of anode discharge are considered in detail: an “ideal” anode and anode with nanosize particles. Working anode parameters are calculated: optimum bulk concentration of graphite in the active layer, active layer thickness, time of complete anode discharge, its specific electric capacitance and final potential on the active/layer interelectrode space interface. Advisability of working with anodes with nanosize grains and electrolyte with enhanced specific conductivity is shown.

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Authors and Affiliations

  1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia

    Yu. G. Chirkov & A. M. Skundin

  2. National Research Nuclear University “MEPhI”, Moscow, Russia

    V. I. Rostokin

Authors
  1. Yu. G. Chirkov
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  2. V. I. Rostokin
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  3. A. M. Skundin
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Correspondence to Yu. G. Chirkov.

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Original Russian Text © Yu.G. Chirkov, V.I. Rostokin, A.M. Skundin, 2011, published in Elektrokhimiya, 2011, vol. 47, No. 1, pp. 65–76.

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Chirkov, Y.G., Rostokin, V.I. & Skundin, A.M. Computer modeling of negative electrode operation in lithium-ion battery: Model of equal-sized grains, galvanostatic discharge mode, calculation of characteristic parameters. Russ J Electrochem 47, 59–70 (2011). https://doi.org/10.1134/S1023193511010058

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  • DOI: https://doi.org/10.1134/S1023193511010058

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