For citation:
Vol'fkovich Y. M., Rychagov A. Y., Sosenkin V. E., Krestinin A. V. A powerful electrochemical supercapacitor on carbon nanotubes. Electrochemical Energetics, 2008, vol. 8, iss. 2, pp. 106-110. DOI: 10.18500/1608-4039-2008-8-2-106-110, EDN: JXGXWL
A powerful electrochemical supercapacitor on carbon nanotubes
On base of voltammetric and chronovoltametric researches is carried out comparison of energy – power characteristics of electrodes made from single walls carbon nano- tubes (SWCNT) and from meso- porous carbon activated of FAS trade mark. High reversibility the charge processes for SWCNT it is discovered. The value of the interval of electrolyte decomposition potentials for SWCNT in sulfuric acid solutions exceeds 1.4 V. It is offered the power electrochemical superсapacitor, having specific power 20 kW/kg and specific energy 1 Wh/kg. These values of specific power in 4 -10 once exceed the corresponding values for electrochemical superсapacitors with electrodes on base of activated carbons. SWCNT possesses much greater corrosion resistance and more high a water decomposition voltage in contrast with carbon of FAS.
1. Conway B. E. Electrochemical Supercapacitors. Scientific Fundamentals and Technological Applications. N. Y.: Kluwer Academic Plenum Publ., 1999.
2. Вольфкович Ю. М., Сердюк Т. М. // Электрохимия. 2002. Т. 38. С. 1043.
3. Дьячков П. Н. Углеродные нанотрубки. Строение, свойства, применения. М.: БИНОМ, 2006.
4. Рычагов А. Ю., Уриссон Н. А., Вольфкович Ю. М. // Электрохимия. 2001. Т. 37. С. 1348.
5. Крестинин А. В. // Рос. хим. журн., 2004. Т. 48(5). С. 21.
6. Krestinin A. V., Raevskii A. V., Kiselev N. A., Zvereva G. I., Zhigalina O. M., Kolesova O. I. // Chem. Phys. Lett. 2003. Vol. 381. P. 529.
7. Volfkovich Yu.M., Bagotzky V. S. // J. Power Sources. 1994. Vol. 48. P. 327, 339.
8. Рычагов А. Ю., Вольфкович Ю. М. // Электрохимия. 2007. Т. 43, № 11. С. 1343.
9. Вольфкович Ю. М., Мазин В. М., Уриссон Н. А. // Электрохимия. 1998. Т. 34, № 8. С. 825.