Effect of oxidative treatment on the electrochemical properties of aligned multi-walled carbon nanotubes
- Authors: Fedorovskaya E.O.1,2, Bulusheva L.G.1,2, Kurenya A.G.1, Asanov I.P.1,2, Okotrub A.V.1,2
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Affiliations:
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch
- Novosibirsk State University
- Issue: Vol 52, No 5 (2016)
- Pages: 441-448
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/187859
- DOI: https://doi.org/10.1134/S1023193516050049
- ID: 187859
Cite item
Abstract
Vertically aligned multi-walled carbon nanotubes (MWNTs) were grown on the surface of electroconductive silicon substrate by catalytic chemical vapor deposition (CCVD) of a mixture of toluene and ferrocene vapors at 800°С. The anisotropic structure of the array that is due to the mutual orientation of MWNTs makes such materials attractive for use as supercapacitor electrodes. The effect of iron nanoparticles encapsulated in MWNTs as a result of synthesis on the electrochemical capacity of the sample in a 1 М H2SO4 solution was studied. Iron was removed during the thermal treatment of the MWNT array in a 20% H2SO4 solution under the normal or hydrothermal conditions. The contribution of redox processes involving iron was shown to be comparable to the contribution of the double-layer capacity of MWNTs. The hydrothermal treatment allows easy separation of the array from the silicon substrate without any loss of electric coupling of MWNTs.
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About the authors
E. O. Fedorovskaya
Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University
Author for correspondence.
Email: fedorovskaya-eo@yandex.ru
Russian Federation, Novosibirsk; Novosibirsk
L. G. Bulusheva
Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University
Email: fedorovskaya-eo@yandex.ru
Russian Federation, Novosibirsk; Novosibirsk
A. G. Kurenya
Nikolaev Institute of Inorganic Chemistry, Siberian Branch
Email: fedorovskaya-eo@yandex.ru
Russian Federation, Novosibirsk
I. P. Asanov
Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University
Email: fedorovskaya-eo@yandex.ru
Russian Federation, Novosibirsk; Novosibirsk
A. V. Okotrub
Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University
Email: fedorovskaya-eo@yandex.ru
Russian Federation, Novosibirsk; Novosibirsk