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Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing

Varun Gangoli Orcid Logo, Christopher Barnett, James McGettrick Orcid Logo, Alvin Orbaek White Orcid Logo, Andrew Barron Orcid Logo

C: Journal of Carbon Research, Volume: 8, Issue: 1, Start page: 1

Swansea University Authors: Varun Gangoli Orcid Logo, Christopher Barnett, James McGettrick Orcid Logo, Alvin Orbaek White Orcid Logo, Andrew Barron Orcid Logo

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DOI (Published version): 10.3390/c8010001

Abstract

We report the effect of annealing, both electrical and by applied voltage, on the electrical conductivity of fibers spun from carbon nanotubes (CNTs). Commercial CNT fibers were used as part of a larger goal to better understand the factors that go into making a better electrical conductor from CNT...

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Published in: C: Journal of Carbon Research
ISSN: 2311-5629
Published: MDPI AG 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa59067
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spelling 2022-10-31T15:23:32.2756415 v2 59067 2022-01-04 Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing 677b4758fd9d95755d516b096be7d396 0000-0001-5313-5839 Varun Gangoli Varun Gangoli true false 3cc4b7c0dcf59d3ff31f9f13b0e5a831 Christopher Barnett Christopher Barnett true false bdbacc591e2de05180e0fd3cc13fa480 0000-0002-7719-2958 James McGettrick James McGettrick true false 8414a23650d4403fdfe1a735dbd2e24e 0000-0001-6338-5970 Alvin Orbaek White Alvin Orbaek White true false 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false 2022-01-04 CHEG We report the effect of annealing, both electrical and by applied voltage, on the electrical conductivity of fibers spun from carbon nanotubes (CNTs). Commercial CNT fibers were used as part of a larger goal to better understand the factors that go into making a better electrical conductor from CNT fibers. A study of thermal annealing in a vacuum up to 800 °C was performed on smaller fiber sections along with a separate analysis of voltage annealing up to 7 VDC; both exhibited a sweet spot in the process as determined by a combination of a two-point probe measurement with a nanoprobe, resonant Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Scaled-up tests were then performed in order to translate these results into bulk samples inside a tube furnace, with similar results that indicate the potential for an optimized method of achieving a better conductor sample made from CNT fibers. The results also help to determine the surface effects that need to be overcome in order to achieve this. Journal Article C: Journal of Carbon Research 8 1 1 MDPI AG 2311-5629 carbon, carbon nanotube, electrical conductor, annealing, energy 23 12 2021 2021-12-23 10.3390/c8010001 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University This work was supported by the Office of Naval Research (N00014-15-2717). V.S.G. funded thanks to Salts Healthcare Ltd. A.O.W. is funded through Sêr Cymru II Fellowship by the Welsh Government and the European Regional Development Fund (ERDF). A.O.W. acknowledges funding from Welsh Government Circular Economy Capital Fund FY 2020-21. The authors acknowledge access to the SEM and XPS provided by the Swansea University AIM Facility, funded in part by the EPSRC (EP/M028267/1) and (EP/N020863/1), the European Regional Development Fund through the Welsh Government (80708) and the Welsh Government’s Sêr Cymru program. 2022-10-31T15:23:32.2756415 2022-01-04T14:09:31.3785103 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Varun Gangoli 0000-0001-5313-5839 1 Christopher Barnett 2 James McGettrick 0000-0002-7719-2958 3 Alvin Orbaek White 0000-0001-6338-5970 4 Andrew Barron 0000-0002-2018-8288 5 59067__22006__a5730a007db54136be561ae4386bae50.pdf carbon-08-00001.pdf 2022-01-04T14:09:31.3784693 Output 3249751 application/pdf Version of Record true © 2021 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng https://creativecommons.org/licenses/by/4.0/
title Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing
spellingShingle Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing
Varun Gangoli
Christopher Barnett
James McGettrick
Alvin Orbaek White
Andrew Barron
title_short Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing
title_full Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing
title_fullStr Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing
title_full_unstemmed Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing
title_sort Increased Electrical Conductivity of Carbon Nanotube Fibers by Thermal and Voltage Annealing
author_id_str_mv 677b4758fd9d95755d516b096be7d396
3cc4b7c0dcf59d3ff31f9f13b0e5a831
bdbacc591e2de05180e0fd3cc13fa480
8414a23650d4403fdfe1a735dbd2e24e
92e452f20936d688d36f91c78574241d
author_id_fullname_str_mv 677b4758fd9d95755d516b096be7d396_***_Varun Gangoli
3cc4b7c0dcf59d3ff31f9f13b0e5a831_***_Christopher Barnett
bdbacc591e2de05180e0fd3cc13fa480_***_James McGettrick
8414a23650d4403fdfe1a735dbd2e24e_***_Alvin Orbaek White
92e452f20936d688d36f91c78574241d_***_Andrew Barron
author Varun Gangoli
Christopher Barnett
James McGettrick
Alvin Orbaek White
Andrew Barron
author2 Varun Gangoli
Christopher Barnett
James McGettrick
Alvin Orbaek White
Andrew Barron
format Journal article
container_title C: Journal of Carbon Research
container_volume 8
container_issue 1
container_start_page 1
publishDate 2021
institution Swansea University
issn 2311-5629
doi_str_mv 10.3390/c8010001
publisher MDPI AG
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
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description We report the effect of annealing, both electrical and by applied voltage, on the electrical conductivity of fibers spun from carbon nanotubes (CNTs). Commercial CNT fibers were used as part of a larger goal to better understand the factors that go into making a better electrical conductor from CNT fibers. A study of thermal annealing in a vacuum up to 800 °C was performed on smaller fiber sections along with a separate analysis of voltage annealing up to 7 VDC; both exhibited a sweet spot in the process as determined by a combination of a two-point probe measurement with a nanoprobe, resonant Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Scaled-up tests were then performed in order to translate these results into bulk samples inside a tube furnace, with similar results that indicate the potential for an optimized method of achieving a better conductor sample made from CNT fibers. The results also help to determine the surface effects that need to be overcome in order to achieve this.
published_date 2021-12-23T04:12:02Z
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