S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Carbon nanofiber supercapacitors with large areal capacitances
- McDonough, James R.; Choi, Jang Wook; Yang, Yuan; La Mantia, Fabio; Zhang, Yuegang; Cui, Yi
- Issue Date
- Applied Physics Letters, Vol.95 No.24, p. 243109
- 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.
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