Surface Oxidation Modification and Performance of Activated Carbon Electrode Material

Abstract:

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Superscript text Commercial activated carbon was modified by surface treatment using nitric acid, The modified carbons were characterized by X-ray photoelectron spectroscopy (XPS).The resultant carbon electrode-based electric double-layer capacitors (EDLCs)were assembled with 1 mol/L (NH42SO4 as the electrolyte. The influence of introduced functional groups, such as hydroxyl and carbonyl, on the performance of EDLCs was studied by Constant current charge-discharge. These functional groups significantly improved the wettability of AC. As a result, the specific capacitance of the carbon modified with 40wt.%HNO3 achieved a specific capacitance of 223.45 F/g at a current density of 5mA/cm2, which is 100.9% higher than that of original AC.

Info:

Periodical:

Advanced Materials Research (Volumes 347-353)

Edited by:

Weiguo Pan, Jianxing Ren and Yongguang Li

Pages:

3456-3458

DOI:

10.4028/www.scientific.net/AMR.347-353.3456

Citation:

R. Q. Wang and M. G. Deng, "Surface Oxidation Modification and Performance of Activated Carbon Electrode Material", Advanced Materials Research, Vols. 347-353, pp. 3456-3458, 2012

Online since:

October 2011

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Price:

$35.00

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