NDLI: Making a commercial carbon fiber cloth having comparable capacitances to carbon nanotubes and graphene in supercapacitors through a “top-down” approach

Content Provider	Royal Society of Chemistry (RSC)
Author	Liu, Jie Cheng, Yingwen Kim, Christine H. J. Ma, Yanwen Zhang, Tianchang Zhang, Hongbo
Copyright Year	2015
Abstract	A “top-down” and scalable approach for processing carbon fiber cloth (CFC) into flexible and all-carbon electrodes with remarkable areal capacity and cyclic stability was developed. CFC is commercially available in large quantities but its use as an electrode material in supercapacitors is not satisfactory. The approach demonstrated in this work is based on the sequential treatment of CFC with KOH activation and high temperature annealing that can effectively improve its specific surface area to a remarkable 2780 m2 g−1 while at the same time achieving a good electrical conductivity of 320 S m−1 without sacrificing its intrinsic mechanical strength and flexibility. The processed CFC can be directly used as an electrode for supercapacitors without any binders, conductive additives and current collectors while avoiding elaborate electrode processing steps to deliver a specific capacitance of ∼0.5 F cm−2 and ∼197 F g−1 with remarkable rate performance and excellent cyclic stability. The properties of these processed CFCs are comparable or better than graphene and carbon nanotube based electrodes. We further demonstrate symmetric solid-state supercapacitors based on these processed CFCs with very good flexibility. This “top-down” and scalable approach can be readily applied to other types of commercially available carbon materials and therefore can have a substantial significance for high performance supercapacitor devices.
Starting Page	3285
Ending Page	3291
Page Count	7
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	7
Issue Number	7
Journal	Nanoscale
DOI	10.1039/c4nr06812b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carbon nanotube Electrical resistivity and conductivity CFC Electrode Graphene Supercapacitor Specific surface area Capacitance Carbon Nucleic acid thermodynamics
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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