Electric double-layer capacitance of carbon nanocages

Tadokoro, Makoto, Tsumeda, Satoru, Tsuhara, Nobuhide, Nakayama, Hiromi, Miyazato, Yuji, Tamamitsu, Kenji, Vinu, Ajayan and Ariga, Katsuhiko (2009) Electric double-layer capacitance of carbon nanocages. Journal of Nanoscience and Nanotechnology, 9 1: 391-395. doi:10.1166/jnn.2009.J042


Author Tadokoro, Makoto
Tsumeda, Satoru
Tsuhara, Nobuhide
Nakayama, Hiromi
Miyazato, Yuji
Tamamitsu, Kenji
Vinu, Ajayan
Ariga, Katsuhiko
Title Electric double-layer capacitance of carbon nanocages
Journal name Journal of Nanoscience and Nanotechnology   Check publisher's open access policy
ISSN 1533-4880
1533-4899
Publication date 2009-01
Sub-type Article (original research)
DOI 10.1166/jnn.2009.J042
Volume 9
Issue 1
Start page 391
End page 395
Total pages 5
Place of publication Valencia, CA, United States
Publisher American Scientific Publishers
Language eng
Abstract We have carried out capacitive experiments on carbon nanocage (CNC) materials, which have highly ordered and uniform pores. The sizes of the opening pores in CNCs are approximately 5.6 nm, as measured from TEM images. CNC materials exhibit type IV nitrogen adsorption isotherms according to the IUPAC classification scheme along with hysteresis and BJH desorption pore size distributions of about 5.2 nm, with high BET surface areas of 1515 m2 . g and large pore volumes of 2.0 cm3 . g-1. The density and specific surface area of the CNC thin film were 0.289 g . cm-3 and 366 m2 . cm-3, and those of the AC-A film, compared with that of the most popularly employed activated carbon, were 0.608 g . cm-3 and 671 m2 . cm-3 by the CV measurement, respectively. The gravimetric capacitance (ca. 200 F. g) for the CNC modified electrode is almost equal to that of the AC-A electrode; however, the volumetric capacitance of the CNC electrode (ca. 50 F.cm3) is only half that of the AC-A electrode, suggesting that the pore spaces in the CNC material are much larger than those in AC-A, and large interfaces in these spaces are not favorable for EDLCs.
Keyword Nanocage
Capacitance
Mesoporous Carbon
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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