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One-step spray processing of high power all-solid-state supercapacitors

Aqueous suspensions of multi-wall carbon nanotubes (MWNTs) in dilute H(2)SO(4) were sprayed onto both sides of a Nafion membrane and dried to fabricate flexible solid-state supercapacitors. A single cell with MWNT-only electrodes had a capacitance of 57 F g(−1) per electrode at 2 mV s(−1) and 44 F g...

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Autores principales: Huang, Chun, Grant, Patrick S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3739011/
https://www.ncbi.nlm.nih.gov/pubmed/23928828
http://dx.doi.org/10.1038/srep02393
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author Huang, Chun
Grant, Patrick S.
author_facet Huang, Chun
Grant, Patrick S.
author_sort Huang, Chun
collection PubMed
description Aqueous suspensions of multi-wall carbon nanotubes (MWNTs) in dilute H(2)SO(4) were sprayed onto both sides of a Nafion membrane and dried to fabricate flexible solid-state supercapacitors. A single cell with MWNT-only electrodes had a capacitance of 57 F g(−1) per electrode at 2 mV s(−1) and 44 F g(−1) at 150 mV s(−1) but with low H(+) mobility. Cells with MWNT + ionomer hybrid electrodes showed higher H(+) mobility, and the electric double layer (EDL) capacitance increased to 145 F g(−1) at 2 mV s(−1) and 91 F g(−1) at 150 mV s(−1). The energy and power densities of one electrode charged to 1 V at 1 A g(−1) were 12.9 Wh kg(−1) and 3.3 kW kg(−1) respectively. Three solid-state supercapacitor cells connected in series charged to 3 V at 1 and 2 A g(−1) provided a device power density of 8.9 kW kg(−1) at 1 A g(−1) and 9.4 kW kg(−1) at 2 A g(−1), the highest for all-solid-state EDL supercapacitors.
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spelling pubmed-37390112013-08-09 One-step spray processing of high power all-solid-state supercapacitors Huang, Chun Grant, Patrick S. Sci Rep Article Aqueous suspensions of multi-wall carbon nanotubes (MWNTs) in dilute H(2)SO(4) were sprayed onto both sides of a Nafion membrane and dried to fabricate flexible solid-state supercapacitors. A single cell with MWNT-only electrodes had a capacitance of 57 F g(−1) per electrode at 2 mV s(−1) and 44 F g(−1) at 150 mV s(−1) but with low H(+) mobility. Cells with MWNT + ionomer hybrid electrodes showed higher H(+) mobility, and the electric double layer (EDL) capacitance increased to 145 F g(−1) at 2 mV s(−1) and 91 F g(−1) at 150 mV s(−1). The energy and power densities of one electrode charged to 1 V at 1 A g(−1) were 12.9 Wh kg(−1) and 3.3 kW kg(−1) respectively. Three solid-state supercapacitor cells connected in series charged to 3 V at 1 and 2 A g(−1) provided a device power density of 8.9 kW kg(−1) at 1 A g(−1) and 9.4 kW kg(−1) at 2 A g(−1), the highest for all-solid-state EDL supercapacitors. Nature Publishing Group 2013-08-09 /pmc/articles/PMC3739011/ /pubmed/23928828 http://dx.doi.org/10.1038/srep02393 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Huang, Chun
Grant, Patrick S.
One-step spray processing of high power all-solid-state supercapacitors
title One-step spray processing of high power all-solid-state supercapacitors
title_full One-step spray processing of high power all-solid-state supercapacitors
title_fullStr One-step spray processing of high power all-solid-state supercapacitors
title_full_unstemmed One-step spray processing of high power all-solid-state supercapacitors
title_short One-step spray processing of high power all-solid-state supercapacitors
title_sort one-step spray processing of high power all-solid-state supercapacitors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3739011/
https://www.ncbi.nlm.nih.gov/pubmed/23928828
http://dx.doi.org/10.1038/srep02393
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