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Mathematical modeling of prolonged cycling of a porous cadmium electrode in alkaline power sources

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Abstract

An analysis of a computer model of a porous cadmium electrode is presented. The model describes prolonged cycling of the electrode under the alkaline battery conditions. It allows the evaluation of the dependence of the cathodic and anodic polarization on the concentration of the alkaline electrolyte, the charge and discharge current density, and the thickness and porosity of the electrode. The effect of the mass transfer of the active substance along the electrode thickness on the electrode capacity during the battery cycling can also be predicted. The calculations took into account that the cathodic and anodic processes on the cadmium electrode occurred by the liquid- and solid-state mechanisms. The diffusion, migration, and convective transport of the electrolyte components were also taken into account. An analysis of data using this model showed that it can be used in studies of the capacity of sintered cadmium electrodes under different operating conditions of nickel-cadmium batteries.

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Correspondence to A. A. Moskvichev.

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Original Russian Text © A.A. Moskvichev, O.L. Kozina, O.A. Leontiev, Yu.L. Gun’ko, M.G. Mikhalenko, A.N. Moskvichev, 2014, published in Elektrokhimiya, 2014, Vol. 50, No. 3, pp. 260–268.

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Moskvichev, A.A., Kozina, O.L., Leontiev, O.A. et al. Mathematical modeling of prolonged cycling of a porous cadmium electrode in alkaline power sources. Russ J Electrochem 50, 231–238 (2014). https://doi.org/10.1134/S1023193514030100

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