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One-step chemical vapor deposition synthesis and supercapacitor performance of nitrogen-doped porous carbon–carbon nanotube hybrids

Lobiak, Egor V and Bulusheva, Lyubov G and Fedorovskaya, Ekaterina O and Shubin, Yury V and Plyusnin, Pavel E and Lonchambon, Pierre and Senkovskiy, Boris V and Ismagilov, Zinfer R and Flahaut, Emmanuel and Okotrub, Alexander V One-step chemical vapor deposition synthesis and supercapacitor performance of nitrogen-doped porous carbon–carbon nanotube hybrids. (2017) Beilstein Journal of Nanotechnology, 8. 2669-2679. ISSN 2190-4286

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Official URL: http://dx.doi.org/10.3762/bjnano.8.267

Abstract

Novel nitrogen-doped carbon hybrid materials consisting of multiwalled nanotubes and porous graphitic layers have been produced by chemical vapor deposition over magnesium-oxide-supported metal catalysts. CNx nanotubes were grown on Co/Mo, Ni/Mo, or Fe/Mo alloy nanoparticles, and MgO grains served as a template for the porous carbon. The simultaneous formation of morphologically different carbon structures was due to the slow activation of catalysts for the nanotube growth in a carbon-containing gas environment. An analysis of the obtained products by means of transmission electron microscopy, thermogravimetry and X-ray photoelectron spectroscopy methods revealed that the catalyst's composition influences the nanotube/porous carbon ratio and concentration of incorporated nitrogen. The hybrid materials were tested as electrodes in a 1M H2SO4 electrolyte and the best performance was found for a nitrogen-enriched material produced using the Fe/Mo catalyst. From the electrochemical impedance spectroscopy data, it was concluded that the nitrogen doping reduces the resistance at the carbon surface/electrolyte interface and the nanotubes permeating the porous carbon provide fast charge transport in the cell.

Item Type:Article
Additional Information:Thanks to Beilstein-Institut editor. The original PDF of the article can be found at https://www.beilstein-journals.org/bjnano/articles/8/267
HAL Id:hal-01729379
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Novosibirsk State University (RUSSIA)
Other partners > Siberian Branch of the Russian Academy of Sciences - SB RAS (RUSSIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Saint Petersburg State University - SPBU (RUSSIA)
Other partners > Universität zu Köln (GERMANY)
Laboratory name:
Funders:
Russian Foundation for Basic Research - PRC CNRS/RFBR - RFBR
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Deposited By: cirimat webmestre
Deposited On:12 Mar 2018 14:49

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