Multi hierarchical construction-induced superior capacitive performances of flexible electrodes for wearable energy storage

Dong, L; Liang, G; Xu, C; Liu, W; Pan, ZZ; Zhou, E; Kang, F; Yang, QH

Multi hierarchical construction-induced superior capacitive performances of flexible electrodes for wearable energy storage

Dong, L

Liang, G Xu, C Liu, W Pan, ZZ Zhou, E Kang, F Yang, QH

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Publication Type:: Journal Article
Citation:: Nano Energy, 2017, 34 pp. 242 - 248
Issue Date:: 2017-04-01

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Field	Value	Language
dc.contributor.author	Dong, L https://orcid.org/0000-0002-1787-8595	en_US
dc.contributor.author	Liang, G	en_US
dc.contributor.author	Xu, C	en_US
dc.contributor.author	Liu, W	en_US
dc.contributor.author	Pan, ZZ	en_US
dc.contributor.author	Zhou, E	en_US
dc.contributor.author	Kang, F	en_US
dc.contributor.author	Yang, QH	en_US
dc.date.issued	2017-04-01	en_US
dc.identifier.citation	Nano Energy, 2017, 34 pp. 242 - 248	en_US
dc.identifier.issn	2211-2855	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125989
dc.description.abstract	© 2017 Elsevier Ltd A multi hierarchical construction is designed for flexible supercapacitor electrodes. Specifically, we chose activated carbon fiber cloth (ACFC) as flexible substrates, deposited polyaniline (PANI) on fiber surface first, then constructed continuous carbon nanotube (CNT) networks between fibers and finally deposited PANI on the CNT networks to obtain ACFC/PANI/CNT/PANI textile electrodes. Repeated deposition of PANI and application of ACFC substrate lead to high content of electrochemically active materials (i.e., PANI and activated carbon fiber); meanwhile, these active materials are located in different locations in the electrodes (fiber itself, fiber surface and the space between fibers), thus avoiding serious aggregation. The fabricated electrodes exhibit superior capacitive performances: areal capacitance, energy density and power density are 4039 mF cm−2, 131 μW h cm−2 and 11424 μW cm−2, respectively, remarkably higher than those of previously reported flexible supercapacitor electrodes; our electrodes also have good cycling stability and flexibility. Furthermore, high-performance thick electrodes (capacitance: 7804 mF cm−2; energy output: 214 μW h cm−2) and flexible fiber-like electrodes (capacitance: 805 mF cm−2; energy density: 23 μW h cm−2) are easily produced from our textile electrodes. This study offers a new direction for optimizing micro-structures and electrochemical properties of flexible electrodes in wearable energy storage devices.	en_US
dc.relation.ispartof	Nano Energy	en_US
dc.relation.isbasedon	10.1016/j.nanoen.2017.02.031	en_US
dc.title	Multi hierarchical construction-induced superior capacitive performances of flexible electrodes for wearable energy storage	en_US
dc.type	Journal Article
utslib.citation.volume	34	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	1007 Nanotechnology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	34	en_US

Abstract:

© 2017 Elsevier Ltd A multi hierarchical construction is designed for flexible supercapacitor electrodes. Specifically, we chose activated carbon fiber cloth (ACFC) as flexible substrates, deposited polyaniline (PANI) on fiber surface first, then constructed continuous carbon nanotube (CNT) networks between fibers and finally deposited PANI on the CNT networks to obtain ACFC/PANI/CNT/PANI textile electrodes. Repeated deposition of PANI and application of ACFC substrate lead to high content of electrochemically active materials (i.e., PANI and activated carbon fiber); meanwhile, these active materials are located in different locations in the electrodes (fiber itself, fiber surface and the space between fibers), thus avoiding serious aggregation. The fabricated electrodes exhibit superior capacitive performances: areal capacitance, energy density and power density are 4039 mF cm−2, 131 μW h cm−2 and 11424 μW cm−2, respectively, remarkably higher than those of previously reported flexible supercapacitor electrodes; our electrodes also have good cycling stability and flexibility. Furthermore, high-performance thick electrodes (capacitance: 7804 mF cm−2; energy output: 214 μW h cm−2) and flexible fiber-like electrodes (capacitance: 805 mF cm−2; energy density: 23 μW h cm−2) are easily produced from our textile electrodes. This study offers a new direction for optimizing micro-structures and electrochemical properties of flexible electrodes in wearable energy storage devices.

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http://hdl.handle.net/10453/125989