Abstract
The electrochemical characteristics of the negative electrodes of the lead-acid battery with additives of carbon nanotubes and graphene were studied. It was shown that the highest values of the capacitive characteristics of the electrodes were obtained by adding carbon nanotubes to the negative active mass. The processes occurring on the negative electrode were studied by the method of impedance spectroscopy. Applying simulation, an equivalent electrical circuit was obtained, which adequately approximated the obtained frequency dependences. The elements of the proposed equivalent circuit were calculated. It was found that the injection of carbon additives increases the resistance R3 related to the porous structure of the electrodes.
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