Modified carbon black, CB/MnO2 and CB/MnO2/PPy nanocomposites synthesised by microwave-assisted method for energy storage devices with high electrochemical performances
Yükleniyor...
Dosyalar
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor and Francis Ltd.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, binary (CB/MnO2) and ternary nanocomposites (CB/MnO2/PPy) include carbon black (CB) and manganese (IV) oxide (MnO2) and polypyrrole (PPy) were chemically synthesized and were characterized by many techniques such as : FTIR-ATR, Raman spectroscopy, SEM-EDX, TGA-DTA analysis, XRD, TEM and BET surface analysis. Electroactive materials were used as a symmetric supercapacitor device system and taken 3 methods (cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS)). CB/MnO2/PPy nanocomposite at [CB]o/[MnO2]o/[Py]o = 1:1:3 showed a highest specific capacitance of C sp = 273.2%F/g at a scan rate of 1 mV/s in 1 M H2SO4 solution. This nanocomposite combination supplies higher energy and power densities of supercapacitor device (E = 0.5513 Wh/kg and P = 91.556 W/kg at 6 mV/s). Equivalent circuit model of R s(C 1(R 1(C 2(R 2 W)))) was used to analyze circuit parameters. Furthermore, the symmetric device for CB/MnO2/PPy nanocomposite at [CB]o/[MnO2]o/[Py]o = 1:1:5 shows an excellent long cycle life with 92.20% of initial capacitance retention after 1000 cycles. CB/MnO2/PPy nanocomposite electrode can be a candidate for supercapacitor applications. © 2020 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.
Açıklama
Anahtar Kelimeler
Carbon black, manganese (IV) oxide, microwave-assisted method, nanocomposite, polypyrrole, supercapacitor, Capacitance, Carbon black, Cyclic voltammetry, Electric network analysis, Electrochemical impedance spectroscopy, Equivalent circuits, Fourier transform infrared spectroscopy, Manganese oxide, Polypyrroles, Supercapacitor, Surface analysis, Electroactive material, Electrochemical performance, Equivalent circuit model, Galvanostatic charge/discharge, Microwave-assisted methods, Nanocomposite electrodes, Supercapacitor application, Ternary nanocomposites, Nanocomposites
Kaynak
Plastics, Rubber and Composites
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
49
Sayı
8
