Health & Environmental Research Online (HERO)


Print Feedback Export to File
8789526 
Journal Article 
Exfoliated graphite nanoplatelets-V2O5 nanotube composite electrodes for supercapacitors 
Bonso, JS; Rahy, A; Perera, SD; Nour, N; Seitz, O; Chabal, YJ; Balkus, KJ, Jr; Ferraris, JP; Yang, DJ 
2012 
Yes 
Journal of Power Sources
ISSN: 0378-7753 
203 
227-232 
WOS:000300815800034 
Exfoliated graphite nanoplatelet (xGnP) and V2O5 nanotube (VNT) composite electrodes were fabricated and tested as electrodes for supercapacitors. Enhancement of the electrochemical performance of the composite over its component materials was demonstrated using cyclic voltammetry (CV), constant current charge/discharge testing and electrochemical impedance spectroscopy in aqueous and organic electrolytes. The calculated specific capacitance of the composite was 35 F g(-1) in the aqueous electrolyte and 226 F g(-1) in the organic electrolyte at a scan rate of 10 mV s(-1) using a three-electrode system. Asymmetric coin cell devices were fabricated using activated carbon cloth as the positive electrode and xGnP-VNT composite as the negative electrode. The energy and power densities in 1 M LiTFSI were 28 Wh kg(-1) and 303 W kg(-1), respectively, at a discharge current density of 250 mA g(-1). Published by Elsevier B.V. 
Electrochemical capacitors; Supercapacitors; Exfoliated graphite nanoplatelets; V2O5 nanotubes