Electrochemical properties of multi-walled carbon nanotubes treated with nitric acid for a supercapacitor electrode

Cited 9 time in webofscience Cited 0 time in scopus
  • Hit : 195
  • Download : 0
The capacitances of partially oxidized multi-walled carbon nanotubes (MWNTs) electrodes treated with nitric acid were investigated for use as the electrode materials of electric double-layer capacitors (EDLCs). The oxidized MWNTs had a much higher specific surface area, pore volume and average pore width than those of pristine MWNTs. Moreover, functional groups such as hydroxyl, carbonyl and carboxyl groups were observed on the surfaces of oxidized MWNTs. The specific capacitance of the oxidized MWNTs after 3 h a nitric acid treatment was 68.8 Fig in the highest oxidized state, more than 7 times greater than that of the pristine MWNTs. Further, the capacitance trends apparently follow the change of the zeta potentials, not the surface areas, indicating that this trend depends on the adsorption of electrolytes as compared to the migration path structure. Further, the oxidized MWNT electrode materials showed good long-term stability during repeated cycles and no decay for more than 1000 cycles. (C) 2016 Elsevier B.V. All rights reserved
Publisher
ELSEVIER SCIENCE BV
Issue Date
2016-10
Language
English
Article Type
Article
Keywords

DOUBLE-LAYER CAPACITANCE; PERFORMANCE

Citation

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v.506, pp.664 - 669

ISSN
0927-7757
DOI
10.1016/j.colsurfa.2016.07.044
URI
http://hdl.handle.net/10203/213558
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 9 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0