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Electrochemical Behavior of Electrodes Containing Single-Walled Nanotubes |
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| Authors: | A. G. Krivenko V. I. Matyushenko E. V. Stenina L. N. Sviridova A. V. Krestinin G. I. Zvereva E. R. Badamshina V. A. Kurmaz A. S. Kotkin G. V. Simbirtseva |
| Affiliation: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Institutskii pr. 16, Chernogolovka, Moscow oblast, 142432, Russia;(2) Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia;(3) Moscow State University, Vorob'evy gory 1, Moscow, 119899, Russia |
| Abstract: | The differential capacitance and voltammograms of electrodes that contain single-walled carbon nanotubes are measured in aqueous electrolytes. The discovered dependence of the capacitance on the measurement frequency is attributed to structural features of nanomaterials used. Electrochemical characteristics of nanotube electrodes are close to those of glassy carbon electrodes, with the difference that the discharge current in the former is substantially higher at cathodic potentials in the presence of N2O. This effect is presumably caused by an autoelectron emission of electrons from nanotubes into electrolyte. |
| Keywords: | single-walled carbon nanotubes differential capacitance voltammetry autoelectron emission electroreduction |
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