Journal
JOURNAL OF POWER SOURCES
Volume 195, Issue 9, Pages 3041-3045Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2009.11.028
Keywords
Graphene nanosheet; Carbon nanotube; Composite electrode; Polyaniline; Supercapacitor
Funding
- Chinese Ministry of Education [106011]
- Foundation of Harbin Innovation Fellow [2006RFQXG030, 2007RFQXG028]
- Fundamental Research Foundation of Harbin Engineering University [HEUFT07094]
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Graphene nanosheet/carbon nanotube/polyaniline (GNS/CNT/PANI) composite is synthesized via in situ polymerization. GNS/CNT/PANI composite exhibits the specific capacitance of 1035 F g(-1) (1 mV s(-1)) in 6 M of KOH, which is a little lower than GNS/PANI composite (1046 F g(-1)), but much higher than pure PANI (115 F g(-1)) and CNT/PANI composite (780 F g(-1)). Though a small amount of CNTs (1 wt.%) is added into GINS, the cycle stability of GNS/CNT/PANI composite is greatly improved due to the maintenance of highly conductive path as well as mechanical strength of the electrode during doping/dedoping processes. After 1000 cycles. the capacitance decreases only 6% of initial capacitance compared to 52% and 67% for GNS/PANI and CNT/PANI composites. (c) 2009 Elsevier B.V. All rights reserved.
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