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Determination and enhancement of the capacitance contributions in carbon nanotube based electrode systems

Appl. Phys. Lett. 95, 183108 (2009); doi:10.1063/1.3258353

Published 5 November 2009

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M. Hoefer and P. R. Bandaru
Department of Mechanical and Aerospace Engineering, Materials Science Program, University of California, San Diego, La Jolla, California 92093-0411, USA
We characterize the methodology of, and a possible way to enhance, the capacitance of carbon nanotube (CNT) electrode based electrochemical capacitors. Argon irradiation was used to controllably incorporate extrinsic defects into CNTs and increase the magnitude of both the pseudocapacitance and double-layer capacitance by as much as 50% and 200%, respectively, compared to untreated electrodes. Our work has implications in analyzing the prospects of CNT based electrochemical capacitors, through investigating ways and means of improving their charge storage capacity and energy density. ©2009 American Institute of Physics
History: Received 7 August 2009; accepted 12 October 2009; published 5 November 2009
Permalink: http://link.aip.org/link/?APPLAB/95/183108/1
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KEYWORDS and PACS

Keywords
PACS
  • 61.48.De
    Structure of carbon nanotubes, boron nanotubes and closely related graphite-like systems
  • 61.80.-x
    Physical radiation effects, radiation damage
  • 84.32.Tt
    Capacitors
  • 82.45.Fk
    Electrochemical electrodes
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

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