Journal
JOURNAL OF POWER SOURCES
Volume 157, Issue 1, Pages 616-620Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2005.07.046
Keywords
single-wall carbon nanotube; polyaniline; composite; supercapacitor; specific capacitance
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Polyaniline/single-wall carbon nanotube (PANI/SWCNT) composites were prepared by in situ potentiostatic deposition of PANI onto SWCNTs at the potential of 0.75 V versus SCE, with the aim to investigate the influence of microstructure on the specific capacitance of PANI/SWCNT composites. It was found that the specific capacitance of the PANI/SWCNT composites is strongly influenced by their microstructure, which is correlated to the wt.% of the PANI deposited onto the SWCNTs. The optimum condition, corresponding to the highest specific capacitance, 463 F g(-1) (at 10 mA cm(-2)), was obtained for 73 wt.% PANI deposited onto SWCNTs. The specific capacitance of the PANI/SWCNT composite electrode was highly stable, with a capacitive decrease of 5% during the first 500 cycles and just 1% during the next 1000 cycles, indicative of the excellent cyclic stability of the composite for supercapacitor applications. (c) 2005 Elsevier B.V All rights reserved.
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