hybrid supercapacitor

A method for producing nitrogen-doped carbon nanotubes was tested. Polyaniline, chemically synthesized on the surface of nanotubes with subsequent carbonization, was used as a source of nitrogen. The electrochemical characteristics of the electrodes based on the obtained carbon material for the hybrid supercapacitors with the acidic electrolyte were studied. It was shown that nitrogen doping of carbon nanotubes increases the capacitive characteristics of the electrodes. 

A review of the current literature on hybrid supercapacitors (hybrid devices) in acid and alkaline electrolytes is presented.

Electrochemical characteristics of electrodes based on various carbon materials such as expanded graphite, nanotubes, black carbon for hybrid supercapacitors C/PbO₂ with acid electrolyte were investigated. It was shown that the highest values of the capacitive characteristics were obtained using TUBALL graphene nanotubes (LLC OCSiAl.ru, Novosibirsk).