The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogen

In this work, we study the morphology, structure, specific surface area, conductivity, and electrochemical properties of the supercapacitor working electrodes prepared based on undoped and nitrogen-doped multi-walled carbon nanotubes (MWCNTs). It is shown that nitrogen-doped MWCNTs have a larger...

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Main Author: P. M. Korusenko
Format: Article
Language:English
Published: Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education 2020-09-01
Series:Омский научный вестник
Subjects:
Online Access:https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2020/4%20(172)/80-84%20%D0%9A%D0%BE%D1%80%D1%83%D1%81%D0%B5%D0%BD%D0%BA%D0%BE%20%D0%9F.%20%D0%9C..pdf
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author P. M. Korusenko
author_facet P. M. Korusenko
author_sort P. M. Korusenko
collection DOAJ
description In this work, we study the morphology, structure, specific surface area, conductivity, and electrochemical properties of the supercapacitor working electrodes prepared based on undoped and nitrogen-doped multi-walled carbon nanotubes (MWCNTs). It is shown that nitrogen-doped MWCNTs have a larger specific surface area and conductivity than MWCNTs due to the presence of structural defects and functional groups on their surface. Using scanning electron microscopy, it is shown that the electrodes formed based on undoped and nitrogen-doped MWCNTs have a porous structure, which ensures the penetration of electrolyte into the volume of the electrodes. A comparative analysis of the electrochemical characteristics of the supercapacitor electrodes in a unipolar acid electrolyte H2SO4 is carried out. Using cyclic voltammetry, it is shown that the high specific capacitance of the electrode based on nitrogen-doped MWCNTs at low scan rates is due to the additional contribution of Faraday processes involving structural defects, functional oxygen-containing and nitrogencontaining groups on the surface of nanotubes.
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publishDate 2020-09-01
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spelling doaj-art-2fd906d5086f40c38c3189c28274cc6c2025-02-02T02:07:51ZengOmsk State Technical University, Federal State Autonoumos Educational Institution of Higher EducationОмский научный вестник1813-82252541-75412020-09-014 (172)808410.25206/1813-8225-2020-172-80-84The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogenP. M. Korusenko0https://orcid.org/0000-0003-3048-1821Omsk Scientific Center of Siberian Branch of Russian Academy of SciencesIn this work, we study the morphology, structure, specific surface area, conductivity, and electrochemical properties of the supercapacitor working electrodes prepared based on undoped and nitrogen-doped multi-walled carbon nanotubes (MWCNTs). It is shown that nitrogen-doped MWCNTs have a larger specific surface area and conductivity than MWCNTs due to the presence of structural defects and functional groups on their surface. Using scanning electron microscopy, it is shown that the electrodes formed based on undoped and nitrogen-doped MWCNTs have a porous structure, which ensures the penetration of electrolyte into the volume of the electrodes. A comparative analysis of the electrochemical characteristics of the supercapacitor electrodes in a unipolar acid electrolyte H2SO4 is carried out. Using cyclic voltammetry, it is shown that the high specific capacitance of the electrode based on nitrogen-doped MWCNTs at low scan rates is due to the additional contribution of Faraday processes involving structural defects, functional oxygen-containing and nitrogencontaining groups on the surface of nanotubes. https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2020/4%20(172)/80-84%20%D0%9A%D0%BE%D1%80%D1%83%D1%81%D0%B5%D0%BD%D0%BA%D0%BE%20%D0%9F.%20%D0%9C..pdfmulti-walled carbon nanotubessupercapacitorsspecific capacitancestructureraman spectroscopy
spellingShingle P. M. Korusenko
The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogen
Омский научный вестник
multi-walled carbon nanotubes
supercapacitors
specific capacitance
structure
raman spectroscopy
title The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogen
title_full The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogen
title_fullStr The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogen
title_full_unstemmed The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogen
title_short The study of morphology and electrochemical properties of supercapacitor working electrode based on multi-walled carbon nanotubes doped with nitrogen
title_sort study of morphology and electrochemical properties of supercapacitor working electrode based on multi walled carbon nanotubes doped with nitrogen
topic multi-walled carbon nanotubes
supercapacitors
specific capacitance
structure
raman spectroscopy
url https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2020/4%20(172)/80-84%20%D0%9A%D0%BE%D1%80%D1%83%D1%81%D0%B5%D0%BD%D0%BA%D0%BE%20%D0%9F.%20%D0%9C..pdf
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AT pmkorusenko studyofmorphologyandelectrochemicalpropertiesofsupercapacitorworkingelectrodebasedonmultiwalledcarbonnanotubesdopedwithnitrogen