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Carbon nanofiber supercapacitors with large areal capacitances

Cited 114 time in Web of Science Cited 118 time in Scopus
Authors

McDonough, James R.; Choi, Jang Wook; Yang, Yuan; La Mantia, Fabio; Zhang, Yuegang; Cui, Yi

Issue Date
2009-12
Publisher
American Institute of Physics
Citation
Applied Physics Letters, Vol.95 No.24, p. 243109
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
https://hdl.handle.net/10371/164616
DOI
https://doi.org/10.1063/1.3273864
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  • College of Engineering
  • School of Chemical and Biological Engineering
Research Area Physics, Materials Science

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