Title:CNTs Supercapacitor Based on the PVDF/PVA Gel Electrolytes
VOLUME: 14 ISSUE: 2
Author(s):Gobad B. Pour*, Leila F. Aval and Masoud Mirzaee
Affiliation:Department of Physics, East Tehran Branch, Islamic Azad University, Tehran, Department of Physics, East Tehran Branch, Islamic Azad University, Tehran, Department of Physics, East Tehran Branch, Islamic Azad University, Tehran
Keywords:Carbon nanotubes, electrode, specific capacitance, performance, supercapacitor, CNTs.
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.