Electrodes

Carbon nanotubes have a high specific surface area (50–1300 m²/g), electrical conductivity (1.06–2.24×104 S/cm), chemical stability, and an ideal ratio of the characteristics of nanotubes — flexibility/strength/mass, allows for them Create ultra-strong flexible and light organic films. The combination of these properties of carbon nanotubes makes them attractive for use in electrodes of electrochemical capacitors as electrical energy storage devices for the automotive and aircraft industries, household electrical appliances. The traditional electrode material of the supercapacitor is activated carbon; its electrochemical capacity is ~30 F/g. The specific electrochemical capacitance of supercapacitors from arrays of oriented carbon nanotubes in aqueous electrolytes is 100–120 F/g, whereas the capacity of composites based on carbon nanotubes can reach 500–700 F/g, they also withstand a large number of recharge cycles. The INFRA nanotubes allow fabrication of unsupported (free-standing) electrodes on the basis of CNT sheets and CNT paper due to their unprecedented length*.

 *Ivan S. Filimonenkov, Sergey A. Urvanov, Nikita V. Kazennov, Aida R. Karaeva, Elena A. Skryleva, Igor G. Solomonik, Natalya I. Batova, Didar Zh. Kurzhumbaev, Galina A. Tsirlina, Vladimir Z. Mordkovich, "Wet oxidative functionalization of carbon nanotube cloth to boost its performance as a flexible supercapacitor electrode", Electrochimica Acta, 2023, Volume 437, 14150. DOI: 10.1016/j.electacta.2022.141501