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Mesoporous Carbon Materials as Electrodes for Electrochemical Double-Layer Capacitor

Published online by Cambridge University Press:  26 February 2011

Sea Park ,
Chengdu Liang ,
Dai Sheng ,
Nancy Dudney  and
David DePaoli
Sea Park
Affiliation:
parksh1@ornl.gov, Oak Ridge National Laboratory, Materials Science and Technology Division, Bethel Valley Rd., Oak Ridge, TN, 37830, United States
Chengdu Liang
Affiliation:
liangcn@ornl.gov, Oak Ridge National Laboratory, Chemical Sciences Division, Bethel Valley Rd., Oak Ridge, TN, 37830, United States
Dai Sheng
Affiliation:
dais@ornl.gov, Oak Ridge National Laboratory, Chemical Sciences Division, Bethel Valley Rd., Oak Ridge, TN, 37830, United States
Nancy Dudney
Affiliation:
dudneynj@ornl.gov, Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge, TN, 37830, United States
David DePaoli
Affiliation:
depaolidw@ornl.gov, Oak Ridge National Laboratory, Nuclear Science and Technology Division, Oak Ridge, TN, 37830, United States
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Abstract

Nanostructured carbon materials with a regular array and narrow size distribution of mesopores have been synthesized at Oak Ridge National Laboratory via the self-assembly of block copolymers as soft templates. One promising application for these materials is as electrodes for electrochemical double-layer capacitors. To evaluate the performance, electrodes were prepared by coating the precursor onto fibrous carbon paper, followed by curing and pyrolysis at 850°C. The resulting mesoporous carbon has a surface area of 310 m2/g and an average pore size of 8.5 nm. Results from cyclic voltammetry and impedance spectroscopy experiments using a sulfuric acid electrolyte showed high specific capacitance values of up to 300 F/g. For comparison, a commercially available aerogel carbon coated paper was also examined.

Keywords

nanostructureenergy-storageC
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 973: Symposium BB – Mobile Energy , 2006 , 0973-BB07-04
Copyright
Copyright © Materials Research Society 2007

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References

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