Synthesis, characterization, and supercapacitor performances of activated and inactivated rGO/MnO2 and rGO/MnO2/PPy nanocomposites
Yükleniyor...
Dosyalar
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, a ternary nanocomposite of reduced graphene oxide (rGO), manganese dioxide (MnO2), and polypyrrole (PPy) was synthesized and characterized and presented electrochemical performances of supercapacitor devices. Four types of activated and inactivated materials (rGO/MnO2, rGO/MnO2*, rGO/MnO2/PPy, and rGO/MnO2*/PPy) were investigated by Fourier transform infrared-attenuated total reflection spectroscopy (FTIR-ATR), scanning electron microscopy-energy dispersion X-ray analysis (SEM-EDX), Raman spectroscopy, Brunauer-Emmett-Teller (BET) surface analysis, thermogravimetric (TGA-DTA) analysis, cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) analysis. Synthesis procedures are easy and low cost and have good conductivity performances compared with other methods. Activated MnO2* and inactivated MnO2 were used in the nanocomposite system. The highest specific capacitance was obtained as Csp = 348.11 F/g at 0.5 mA for rGO/MnO2* nanocomposite by GCD method. The spectroscopic, morphologic, pore size, thermogravimetric, and electrochemical differences of activated and inactivated MnO2 materials are presented in this manuscript. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
Açıklama
Anahtar Kelimeler
Activated MnO2, Nanocomposite, Reduced graphene oxide, SEM, Supercapacitor, Cyclic voltammetry, Electrochemical impedance spectroscopy, Electromagnetic wave reflection, Energy dispersive X ray analysis, Fourier transform infrared spectroscopy, Graphene, Manganese oxide, Polymer films, Polypyrroles, Pore size, Reduced Graphene Oxide, Scanning electron microscopy, Spectrum analysis, Supercapacitor, Surface analysis, Thermogravimetric analysis, X ray diffraction analysis, Brunauer emmett tellers, Electrochemical performance, Energy dispersion x-ray analysis, Fourier transform infrared attenuated total reflections, Galvanostatic charge/discharge, Nanocomposite systems, Reduced graphene oxides (RGO), Ternary nanocomposites, Phosphorus compounds
Kaynak
Ionics
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
26
Sayı
9
