Enhanced supercapacitance of multiwalled carbon nanotubes functionalized with ruthenium oxide

Arabale, Girish ; Wagh, Deepali ; Kulkarni, Mahesh ; Mulla, I. S. ; Vernekar, S. P. ; Vijayamohanan, K. ; Rao, A. M. (2003) Enhanced supercapacitance of multiwalled carbon nanotubes functionalized with ruthenium oxide Chemical Physics Letters, 376 (1-2). pp. 207-213. ISSN 0009-2614

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0009-2614(03)00946-1

Abstract

In this study we report the pseudocapacitive behavior of multiwalled carbon nanotubes (MWNTs) functionalized with hydrous ruthenium oxide in 1 M sulfuric acid for supercapacitor applications. The entangled network of nanotubes which forms open mesopores and their chemical stability with a basal geometry makes them suitable for such applications. Oxidative treatment to generate oxygenated functional groups on the tube-ends and along the sidewalls enables facile derivatization by hydrous ruthenium oxide to enhance the inherent capacitance. A specific capacitance of 80 F/g is obtained after ruthenium oxide functionalization, which is significantly greater than that of pristine MWNTs (30 F/g) in the same medium.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:53281
Deposited On:05 Aug 2011 11:16
Last Modified:05 Aug 2011 11:16

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