Electrochemical characteristics of a composite based on multi-walled carbon nanotubes and manganese oxide doped with silver oxide

S. N. Nesov^a, P. M. Korusenko^a, I. A. Lobov^ab, K. E. Ivlev<sup>b

a</sup> Omsk State Technical University, Omsk, Russia
^b Omsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Omsk, Russia

Abstract: The effect of silver (II) oxide on the electrochemical characteristics of a composite based on multi-walled carbon nanotubes and manganese oxide when it is used as a base for supercapacitor electrodes has been studied. Composite with an Ag content $\sim$3 at.% showed higher values of specific capacitance, both at low and high values of the galvanostatic discharge current density, compared with an undoped composite. It is shown that the increase in electrochemical characteristics is due not only to a decrease in electrical resistance, but also to the course of reversible redox reactions involving Ag$_2$O oxide.

Keywords: supercapacitors, electrical conductivity, specific capacity, redox reactions.

Received: 19.07.2023
Revised: 07.09.2023
Accepted: 09.09.2023

DOI: 10.61011/PJTF.2023.21.56455.19689

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