rGO / MnO2 / Polyterthiophene ternary composite: pore size control, electrochemical supercapacitor behavior and equivalent circuit model analysis
Loading...
Files
Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
In this work, a new electrode active materials including reduced graphene oxide (rGO), Manganese dioxide (MnO2) / polyterthiophene (PTTh) has been synthesized as a nanocomposite using in-situ polymerization method, microwave-assisted method for obtaining reduced graphene oxide and chemical synthesis of metal-oxide for supercapacitor devices. A ternary nanocomposites of rGO/MnO2/PTTh were characterized by the analysis of Fourier transform infrared-attenuated transmission reflectance (FTIR-ATR), Raman spectroscopy, scanning electron microscopy-energy dispersion X-ray analysis (SEM-EDX), transmission electron microscopy (TEM), thermal-gravimetric analysis (TGA-DTA), Brunauer-Emmett Teller (BET) pore analysis, Ultraviolet-visible (UV-vis) spectrophotometer, X-ray diffraction (XRD) analysis, electrochemical impedance spectroscopy (EIS), galvanostatic charge/discharge (GCD), and cyclic voltammetry (CV). The highest specific capacitance (Csp) was obtained as Csp = 908.86 F/g for rGO/MnO2/PTTh nanocomposite at 1 mV/s for [MnO2]o/[TTh]o = 1/3. Moreover, equivalent electrical circuit model of LR(QR) was chosen to interpret EIS analysis of supercapacitor device. rGO/MnO2/PTTh nanocomposite has both electrochemical double-layer capacitance and pseudocapacitance due to the fast and reversible redox processes related to the ?-conjugated polymer chains. [Figure not available: see fulltext.] © 2020, The Polymer Society, Taipei.
Description
Keywords
Circuit model, Manganese dioxide, Nanocomposite, Polyterthiophene, Reduced graphene oxide, Supercapacitor, Capacitance, Circuit simulation, Conjugated polymers, Cyclic voltammetry, Electrochemical electrodes, Electrochemical impedance spectroscopy, Energy dispersive X ray analysis, Fourier transform infrared spectroscopy, Graphene, Gravimetric analysis, High resolution transmission electron microscopy, Manganese oxide, Metals, Pore size, Reduced Graphene Oxide, Scanning electron microscopy, Supercapacitor, Thermogravimetric analysis, Timing circuits, Transmissions, X ray diffraction analysis, Electrochemical supercapacitor, Energy dispersion x-ray analysis, Equivalent electrical circuit model, Fourier transform infra reds, Galvanostatic charge/discharge, Microwave-assisted methods, Reduced graphene oxides (RGO), Thermal gravimetric analysis, Equivalent circuits
Journal or Series
Journal of Polymer Research
WoS Q Value
Q2
Scopus Q Value
Q2
Volume
27
Issue
8
