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Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally in Carbon Fiber Cloth for All-Carbon Supercapacitors
[Image: see text] An Au/K bicatalyst-assisted chemical vapor deposition process using C(2)H(2(g)) to grow high-density carbon nanocoils (CNCs) uniformly on the fibers in carbon fiber cloth substrates three-dimensionally was developed. An as-deposited substrate (2.5 × 1.0 cm(2)) showed a high electro...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648905/ https://www.ncbi.nlm.nih.gov/pubmed/31459323 http://dx.doi.org/10.1021/acsomega.8b02215 |
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author | Hu, Shin Lee, Chi-Young Chiu, Hsin-Tien |
author_facet | Hu, Shin Lee, Chi-Young Chiu, Hsin-Tien |
author_sort | Hu, Shin |
collection | PubMed |
description | [Image: see text] An Au/K bicatalyst-assisted chemical vapor deposition process using C(2)H(2(g)) to grow high-density carbon nanocoils (CNCs) uniformly on the fibers in carbon fiber cloth substrates three-dimensionally was developed. An as-deposited substrate (2.5 × 1.0 cm(2)) showed a high electrochemical active surface area (16.53 cm(2)), suggesting its potential usefulness as the electrode in electrochemical devices. The unique one-dimensional (1D) helical structure of the CNCs shortened the diffusion pathways of the ions in the electrolyte and generated efficient electron conduction routes so that the observed serial resistance R(s) was low (3.7 Ω). By employing two-electrode systems, a liquid-state supercapacitor (SC) in H(2)SO(4(aq)) (1.0 M) and a solid-state SC with a polypropylene (PP) separator immersed in H(2)SO(4(aq)) (1.0 M)/polyvinylalcohol were assembled and investigated by using CNC-based electrodes. Both devices exhibited approximate rectangular shape profiles in the cyclic voltammetry measurements at various scan rates. The observations indicated their electric double-layer capacitive behaviors. From their galvanostatic charge/discharge curves, the specific capacitances of the liquid SC and the solid SC were measured to be approximately 137 and 163 F/g, respectively. In addition, the solid-state CNC-based SC possessed excellent energy density (15.3 W h/kg) and power density (510 W/kg). The light weight solid SC (0.1965 g, 2.5 × 1.0 cm(2)) was bendable up to 150° with most of the properties retained. |
format | Online Article Text |
id | pubmed-6648905 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66489052019-08-27 Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally in Carbon Fiber Cloth for All-Carbon Supercapacitors Hu, Shin Lee, Chi-Young Chiu, Hsin-Tien ACS Omega [Image: see text] An Au/K bicatalyst-assisted chemical vapor deposition process using C(2)H(2(g)) to grow high-density carbon nanocoils (CNCs) uniformly on the fibers in carbon fiber cloth substrates three-dimensionally was developed. An as-deposited substrate (2.5 × 1.0 cm(2)) showed a high electrochemical active surface area (16.53 cm(2)), suggesting its potential usefulness as the electrode in electrochemical devices. The unique one-dimensional (1D) helical structure of the CNCs shortened the diffusion pathways of the ions in the electrolyte and generated efficient electron conduction routes so that the observed serial resistance R(s) was low (3.7 Ω). By employing two-electrode systems, a liquid-state supercapacitor (SC) in H(2)SO(4(aq)) (1.0 M) and a solid-state SC with a polypropylene (PP) separator immersed in H(2)SO(4(aq)) (1.0 M)/polyvinylalcohol were assembled and investigated by using CNC-based electrodes. Both devices exhibited approximate rectangular shape profiles in the cyclic voltammetry measurements at various scan rates. The observations indicated their electric double-layer capacitive behaviors. From their galvanostatic charge/discharge curves, the specific capacitances of the liquid SC and the solid SC were measured to be approximately 137 and 163 F/g, respectively. In addition, the solid-state CNC-based SC possessed excellent energy density (15.3 W h/kg) and power density (510 W/kg). The light weight solid SC (0.1965 g, 2.5 × 1.0 cm(2)) was bendable up to 150° with most of the properties retained. American Chemical Society 2019-01-04 /pmc/articles/PMC6648905/ /pubmed/31459323 http://dx.doi.org/10.1021/acsomega.8b02215 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Hu, Shin Lee, Chi-Young Chiu, Hsin-Tien Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally in Carbon Fiber Cloth for All-Carbon Supercapacitors |
title | Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally
in Carbon Fiber Cloth for All-Carbon Supercapacitors |
title_full | Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally
in Carbon Fiber Cloth for All-Carbon Supercapacitors |
title_fullStr | Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally
in Carbon Fiber Cloth for All-Carbon Supercapacitors |
title_full_unstemmed | Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally
in Carbon Fiber Cloth for All-Carbon Supercapacitors |
title_short | Chemical Vapor Deposition of Carbon Nanocoils Three-Dimensionally
in Carbon Fiber Cloth for All-Carbon Supercapacitors |
title_sort | chemical vapor deposition of carbon nanocoils three-dimensionally
in carbon fiber cloth for all-carbon supercapacitors |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648905/ https://www.ncbi.nlm.nih.gov/pubmed/31459323 http://dx.doi.org/10.1021/acsomega.8b02215 |
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