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CNTs Supercapacitor Based on the PVDF/PVA Gel Electrolytes

Gobad B Pour¹, Leila F Aval¹, Masoud Mirzaee¹

¹Department of Physics, East Tehran Branch, Islamic Azad University, Tehran, Iran.

Recent Patents on Nanotechnology

|December 5, 2019

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:

CNTs Carbon nanotubes electrode performance specific capacitance supercapacitor

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