Universität zu Köln

Lobiak, Egor V., Bulusheva, Lyubov G., Fedorovskaya, Ekaterina O., Shubin, Yury V., Plyusnin, Pavel E., Lonchambon, Pierre, Senkovskiy, Boris V. ORCID: 0000-0003-1443-6780, Ismagilov, Zinfer R., Flahaut, Emmanuel and Okotrub, Alexander V. (2017). One-step chemical vapor deposition synthesis and supercapacitor performance of nitrogen-doped porous carbon-carbon nanotube hybrids. Beilstein J. Nanotechnol., 8. S. 2669 - 2680. FRANKFURT AM MAIN: BEILSTEIN-INSTITUT. ISSN 2190-4286

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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:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lobiak, Egor V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bulusheva, Lyubov G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fedorovskaya, Ekaterina O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Shubin, Yury V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Plyusnin, Pavel E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lonchambon, Pierre UNSPECIFIED UNSPECIFIED UNSPECIFIED Senkovskiy, Boris V. UNSPECIFIED orcid.org/0000-0003-1443-6780 UNSPECIFIED Ismagilov, Zinfer R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Flahaut, Emmanuel UNSPECIFIED UNSPECIFIED UNSPECIFIED Okotrub, Alexander V. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-207947
DOI:	10.3762/bjnano.8.267
Journal or Publication Title:	Beilstein J. Nanotechnol.
Volume:	8
Page Range:	S. 2669 - 2680
Date:	2017
Publisher:	BEILSTEIN-INSTITUT
Place of Publication:	FRANKFURT AM MAIN
ISSN:	2190-4286
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LITHIUM-SULFUR BATTERIES; RAY PHOTOELECTRON-SPECTROSCOPY; ELECTROCHEMICAL CAPACITORS; N-2 MOLECULES; ION BATTERIES; GRAPHENE; TEMPERATURE; OXIDE; NANOPARTICLES; NANOMATERIALS Multiple languages Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/20794