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Electrochemical Properties of Graphene-vanadium Oxide Composite Prepared by Electro-deposition for Electrochemical Capacitors
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  • Journal title : Korean Chemical Engineering Research
  • Volume 53, Issue 2,  2015, pp.131-136
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2015.53.2.131
 Title & Authors
Electrochemical Properties of Graphene-vanadium Oxide Composite Prepared by Electro-deposition for Electrochemical Capacitors
Jeong, Heeyoung; Jeong, Sang Mun;
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The nanostructural graphene/vanadium oxide (graphene/) composite with enhanced capacitance was synthesized by the electro-deposition in 0.5 M solution. The morphology of composites was characterized using scanning electron microscopy (SEM), x-ray diffraction pattern (XRD), and x-ray photoelectron spectroscopy (XPS). The oxidation states of the electro-deposited vanadium oxide was found to be and . The morphology of the prepared graphene/ composite exhibits a netlike nano-structure with nanorods in about 100 nm diameter, which could lead a better contact between electrolyte an electrode. The composite with a deposition time of 4,000 s exhibits the specific capacitance of at a scan rate of 20 mV/s and the capacitance retention of 53% after 1000 CV cycles.
Electrochemical Capacitors;Vanadium Oxide;Electro-deposition;Graphene;
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