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나노 구조 물리 연구단
나노구조물리 연구단
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Coaxial Fiber Supercapacitor Using All-Carbon Material Electrodes Highly Cited Paper

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Title
Coaxial Fiber Supercapacitor Using All-Carbon Material Electrodes
Author(s)
Viet Thong Le; Heetae Kim; Arunabha Ghosh; Jaesu Kim; Jian Chang; Quoc An Vu; Duy Tho Pham; Ju-Hyuck Lee; Sang-Woo Kim; Young Hee Lee
Publication Date
2013-07
Journal
ACS NANO, v.7, no.7, pp.5940 - 5947
Publisher
AMER CHEMICAL SOC
Abstract
We report a coaxial fiber supercapacitor, which consists of carbon microfiber bundles coated with multiwalled carbon nanotubes as a core electrode and carbon nanofiber paper as an outer electrode. The ratio of electrode volumes was determined by a half-cell test of each electrode. The capacitance reached 6.3 mF cm-1 (86.8 mF cm-2) at a core electrode diameter of 230 μm and the measured energy density was 0.7 μWh cm-1 (9.8 μWh cm-2) at a power density of 13.7 μW cm-1 (189.4 μW cm-2), which were much higher than the previous reports. The change in the cyclic voltammetry characteristics was negligible at 180o bending, with excellent cycling performance. The high capacitance, high energy density, and power density of the coaxial fiber supercapacitor are attributed to not only high effective surface area due to its coaxial structure and bundle of the core electrode but also all-carbon materials electrodes which have high conductivity. Our coaxial fiber supercapacitor can promote the development of textile electronic in near future.
URI
https://pr.ibs.re.kr/handle/8788114/1298
ISSN
1936-0851
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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308_Coaxial Fiber_Viet Thong Le.pdfDownload

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