Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61720
Title: Flexible fiber hybrid supercapacitor with NiCo2O4 nanograss@carbon fiber and bio-waste derived high surface area porous carbon
Authors: Senthilkumar, ST
Fu, N
Liu, Y
Wang, Y
Zhou, L 
Huang, H 
Keywords: Capacitance
Energy density
Fiber Supercapacitor
Flexible
Wearable
Issue Date: 2016
Publisher: Pergamon Press
Source: Electrochimica acta, 2016, v. 211, p. 411-419 How to cite?
Journal: Electrochimica acta 
Abstract: Flexible, light weight and portable energy storage devices are receiving much attention for flexible electronic applications. Nonetheless, these conventional two-dimensional (2D) or planar structured flexible energy storage devices could not meet the demand for wearable or textile electronics. To meet this demand, in this work, a novel flexible fiber hybrid supercapacitor (HSC) is fabricated using NiCo2O4 nanograss (NG)-array coated carbon fiber (NiCo2O4 NG@CF) as the positive electrode to provide a pseudocapacitance and porous carbon coated carbon fiber electrode as the negative electrode to provide an electric double-layer capacitance (EDLC). Particularly, the porous carbon is prepared from Lemon peel waste to obtain a low cost electrode material. Interestingly, the fabricated HSC exhibits a maximum specific capacitance of 17.5 F g-1 (25.03 mF cm-2) and an energy density of 6.61 Wh kg-1 (9.46 μWh cm-2) at the current of 1 mA, which is far better than previous reports. Moreover, three knitted fiber HSCs connected in series could successfully power up a red LED, even at a folded condition. It is believed that this type of fiber HSC could be a potential candidate for flexible/wearable electronic applications.
URI: http://hdl.handle.net/10397/61720
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2016.06.059
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