Electrochemical performance of polyaniline nanofibres and polyaniline/multi-walled carbon nanotube composite as an electrode material for aqueous redox supercapacitors
Data(s) |
27/09/2007
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Resumo |
Polyaniline (PANI) nanofibres are synthesized by interfacial polymerization and their electrochemical performance is evaluated in an aqueous redox supercapacitor constituted as a two-electrode cell. The initial specific capacitance of the cell is 554 F g−1 at a constant current of 1.0 A g−1, but this value rapidly decreases on continuous cycling. In order to improve the cycleability of the supercapacitor, a composite of polyaniline with multi-walled carbon nanotubes (CNTs) is synthesized by in situ chemical polymerization. Its capacitive behaviour is evaluated in a similar cell configuration. A high initial specific capacitance of 606 F g−1 is obtained with good retention on cycling. In both supercapacitors, the effect of charging potential on cycling performances is investigated.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier SA |
Relação |
http://dro.deakin.edu.au/eserv/DU:30030255/forsyth-electrochemicalperformance-2007.pdf http://dx.doi.org/10.1016/j.jpowsour.2007.05.103 |
Direitos |
2007, Elsevier B.V. All rights reserved. |
Palavras-Chave | #Carbon nanotube #Composite electrode #Electrochemical capacitor #Polyaniline #Redox supercapacitor |
Tipo |
Journal Article |