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Carbon nanofiber supercapacitors with large areal capacitances

Cited 100 time in Web of Science Cited 99 time in Scopus
Authors
McDonough, James R.; Choi, Jang Wook; Yang, Yuan; La Mantia, Fabio; Zhang, Yuegang; Cui, Yi
Issue Date
2009-12
Citation
Applied Physics Letters, Vol.95 No.24, p. 243109
Keywords
carbon fibreselectrodesmetal foamsnanofibresporous materialssupercapacitors
Abstract
We develop supercapacitor (SC) devices with large per-area capacitances by utilizing three-dimensional (3D) porous substrates. Carbon nanofibers (CNFs) functioning as active SC electrodes are grown on 3D nickel foam. The 3D porous substrates facilitate a mass loading of active electrodes and per-area capacitance as large as 60 mg/cm(2) and 1.2 F/cm(2), respectively. We optimize SC performance by developing an annealing-free CNF growth process that minimizes undesirable nickel carbide formation. Superior per-area capacitances described here suggest that 3D porous substrates are useful in various energy storage devices in which per-area performance is critical.
ISSN
0003-6951
URI
http://hdl.handle.net/10371/164616
DOI
https://doi.org/10.1063/1.3273864
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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