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Carbon nanofiber supercapacitors with large areal capacitances
Cited 114 time in
Web of Science
Cited 118 time in Scopus
- Authors
- 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
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