Abstract
Carbon nanotube sheet electrodes have been prepared from catalytically grown carbon nanotubes of high purity and narrow diameter distribution, centered around 80 Å. Our study shows that the electrodes are free-standing mats of entangled nanotubes with an open porous structure almost impossible to obtain with activated carbon or carbon fiber. These properties are highly desirable for high power and long cycle life electrochemical capacitors. Specific capacitances of 102 and 49 F/g were measured at 1 and 100 Hz, respectively, on a single cell device with 38 wt % H2SO4 as the electrolyte. The same cell had a power density of >8000 W/kg.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 9:29 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 3, 2024, 7:23 a.m.) |
Indexed | 13 hours, 43 minutes ago (Aug. 23, 2025, 12:58 a.m.) |
Issued | 28 years, 5 months ago (March 17, 1997) |
Published | 28 years, 5 months ago (March 17, 1997) |
Published Print | 28 years, 5 months ago (March 17, 1997) |
@article{Niu_1997, title={High power electrochemical capacitors based on carbon nanotube electrodes}, volume={70}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.118568}, DOI={10.1063/1.118568}, number={11}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Niu, Chunming and Sichel, Enid K. and Hoch, Robert and Moy, David and Tennent, Howard}, year={1997}, month=mar, pages={1480–1482} }