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Ultrafast charge and discharge biscrolled yarn supercapacitors for textiles and microdevices

Title
Ultrafast charge and discharge biscrolled yarn supercapacitors for textiles and microdevices
Author
김선정
Keywords
ELECTROCHEMICAL ENERGY-STORAGE; CARBON NANOTUBE YARNS; MICRO-SUPERCAPACITORS; HIGH-POWER; FILMS; NANOMEMBRANES; PERFORMANCE; ELECTRODES; CAPACITORS; GRAPHENE
Issue Date
2013-06
Publisher
NATURE PUBLISHING GROUP, MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
Citation
Nature Communications, 4 June 2013, 4, pp.1970
Abstract
Flexible, wearable, implantable and easily reconfigurable supercapacitors delivering high energy and power densities are needed for electronic devices. Here we demonstrate weavable, sewable, knottable and braidable yarns that function as high performance electrodes of redox supercapacitors. A novel technology, gradient biscrolling, provides fastion-transport yarn in which hundreds of layers of conducting-polymer-infiltrated carbon nanotube sheet are scrolled into similar to 20 mu m diameter yarn. Plying the biscrolled yarn with a metal wire current collector increases power generation capabilities. The volumetric capacitance is high (up to similar to 179 Fcm(-3)) and the discharge current of the plied yarn supercapacitor linearly increases with voltage scan rate up to similar to 80 Vs(-1) and similar to 20 Vs(-1) for liquid and solid electrolytes, respectively. The exceptionally high energy and power densities for the complete supercapacitor, and high cycle life that little depends on winding or sewing (92%, 99% after 10,000 cycles, respectively) are important for the applications in electronic textiles.
URI
https://www.nature.com/articles/ncomms2970http://hdl.handle.net/20.500.11754/46136
ISSN
2041-1723
DOI
10.1038/ncomms2970
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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