Supercapacitor Performance of Vertically Aligned Multiwall Carbon Nanotubes Produced by Aerosol-Assisted CCVD Method | Sciact - CRIS-system of Boreskov Institute of Catalysis

Supercapacitor Performance of Vertically Aligned Multiwall Carbon Nanotubes Produced by Aerosol-Assisted CCVD Method Full article

Journal

Electrochimica Acta
ISSN: 0013-4686 , E-ISSN: 1873-3859

Output data

Year: 2014, Volume: 139, Pages: 165-172 Pages count : 8 DOI: 10.1016/j.electacta.2014.06.176

Tags

Cyclic voltammetry, Encapsulated iron, Mössbauer spectroscopy, Supercapacitor, Vertically aligned carbon nanotubes, X-ray photoelectron spectroscopy

Authors

Fedorovskaya E.O. ¹ , Bulusheva L.G. ^1,2 , Kurenya A.G. ¹ , Asanov I.P. ^1,2 , Rudina N.A. ³ , Funtov K.O. ⁴ , Lyubutin I.S. ⁴ , Okotrub A.V. ^1,2

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, SB RAS, 3 Acad. Lavrentiev avenue, Novosibirsk 630090, Russia
2	Novosibirsk State University, 2 Pirogov str., Novosibirsk 630090, Russia
3	Boreskov Institute of Catalysis, SB RAS, 5 Acad. Lavrentiev avenue, Novosibirsk 630090, Russia
4	Shubnikov Institute of Crystallography, RAS, 59 Leninskii avenue, Moscow 119333, Russia

Funding (1)

Russian Science Foundation

14-12-00848

Arrays of vertically aligned carbon nanotubes (CNTs) grown on n-doped silicon substrates using an aerosol-assisted catalytic chemical vapor deposition (CCVD) technique have been tested as supercapacitor electrodes. Electrochemical properties of the electrodes were shown to be significantly dependent on the array thickness. At scan rate of 20 mV/s the largest specific capacitance of 124 F/g was achieved for the ∼280–μm array, while increase in the thickness to ∼ 1100 μm caused a drop in electrode capacitance by four times. It was shown that in a sulfuric acid electrolyte, the redox processes with iron nanoparticles encapsulated in CNTs contribute significantly to the capacitance of array. From the Mössbauer spectroscopy, these nanoparticles are present as α-Fe, γ-Fe, and Fe3C phases. X-ray photoelectron spectroscopy revealed that during the electrode charging and discharging sulfates of Fe(II) and Fe(III) are formed in surficial layers of the nanoparticles.

Fedorovskaya E.O. , Bulusheva L.G. , Kurenya A.G. , Asanov I.P. , Rudina N.A. , Funtov K.O. , Lyubutin I.S. , Okotrub A.V.
Supercapacitor Performance of Vertically Aligned Multiwall Carbon Nanotubes Produced by Aerosol-Assisted CCVD Method
Electrochimica Acta. 2014. V.139. P.165-172. DOI: 10.1016/j.electacta.2014.06.176 WOS Scopus РИНЦ OpenAlex ANCAN

Submitted:	Apr 30, 2014
Accepted:	Jun 30, 2014
Published online:	Jul 18, 2014
Published print:	Sep 1, 2014

≡ Web of science:	WOS:000342275200024
≡ Scopus:	2-s2.0-84905003474
≡ Elibrary:	23972156
≡ OpenAlex:	W2049453443
≡ Chemical Abstracts:	2014:1244140
≡ Chemical Abstracts (print):	161:326061

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