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Recent Patents on Nanotechnology

Author(s): Gobad B. Pour*, Leila F. Aval and Masoud Mirzaee

DOI: 10.2174/1872210513666191204111006

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CNTs Supercapacitor Based on the PVDF/PVA Gel Electrolytes

Page: [163 - 170] Pages: 8

  • * (Excluding Mailing and Handling)

Abstract

Background: In this paper, the supercapacitor based on the carbon nanotubes (CNTs) electrodes has been fabricated.

Objective: The Polyvinylidene Fluoride (PVDF) and Polyvinyl Alcohol (PVA) were used as a gel electrolyte.

Methods: The electrodes and electrolytes thin films were characterized by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The specific Capacitance (Cs) of the CNTs-based supercapacitor has been measured using the cyclic voltammetry and galvanostatic methods. For the scan rate, 20 mV s-1 the Cs of the CNTs-based supercapacitor was 173 F g-1.

Results: Using the electrochemical impedance spectroscopy the Nyquist curve has been plotted. The reactance capacitance and the equivalent series resistance of the CNTs-based supercapacitor with PVDF/PVA gel electrolytes were 90 Ω and 25 Ω respectively.

Conclusion: Also, few patents for the CNTs-based supercapacitor have been reviewed and cited. The CNTs-based supercapacitor proposed a new structure solid-state and flexible supercapacitor with high performance.

Keywords: Carbon nanotubes, electrode, specific capacitance, performance, supercapacitor, CNTs.

Graphical Abstract

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