International Conference PhysicA.SPb/2023

Composites based on carbon materials and manganese oxide for asymmetric supercapacitors

S. N. Nesov^ab, Yu. A. Sten'kin^b, V. V. Bolotov^b, S. A. Matyushenko<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 electrochemical characteristics of composite materials based on multi-walled carbon nanotubes (MWCNTs), manganese oxide and carbon black as an electrode material for supercapacitors (SC) are investigated. Composites with a specific capacitance of 120–65 F/g (at a current density of 0.2–1 A/g) were obtained. The asymmetric SC based on one of the obtained composite materials showed high cyclic stability at a maximum voltage of 1.5 V in an aqueous electrolyte, as well as competitive energy and capacitance characterisics.

Keywords: supercapacitors, composites, carbon nanotubes, manganese oxide, carbon black.

Received: 11.05.2023
Revised: 16.08.2023
Accepted: 30.10.2023

DOI: 10.61011/FTT.2023.12.56729.5038k

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