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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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Autores principales: Hu, Shin, Lee, Chi-Young, Chiu, Hsin-Tien
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
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.
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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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