Journal
MATERIALS LETTERS
Volume 78, Issue -, Pages 106-109Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2012.03.013
Keywords
Graphene oxide; Polymers; Nanocomposites; Supercapacitors
Funding
- Shanghai Municipal Education Commission [12YZ179]
- Shanghai Educational Development Foundation [11CG64]
- Program for New Century Excellent Talents in University [NCET-10-883]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
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Polypyrrole (PPy) nanowires have been successfully grown on the surface of graphene oxide (GO) nanosheets by using a facile chemical method. The GO/PPy composites exhibit a predominant specific capacitance of 633 F/g at a current density of 1 A/g by charge/discharge analysis, in comparison with 227 F/g for pure PPy. The composites also show superior electrochemical rate capability and cycle stability. The attenuation of the specific capacitance is less than 6% after 1000 charge/discharge processes. The high specific capacitance and good stability of the GO/PPy composites are very promising for applications in electrochemical supercapacitor devices. (C) 2012 Elsevier B.V. All rights reserved.
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