Physics of the Solid State
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Composites based on carbon materials and manganese oxide for asymmetric supercapacitors
Nesov S. N.
1,2, Stenkin Yu. A.
2, Bolotov V. V.
2, Matushenko S. A.
2
1Omsk State Technical University, Omsk, Russia
2Omsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Omsk, Russia
2Omsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Omsk, Russia
Email: nesov55@mail.ru, ross614@mail.ru
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.
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