Journal of the Electrochemical Society, ( ISI ), Volume (168), No (3), Year (2021-3) , Pages (30543-30543)

Title : ( Iron (II and III) Oxides/Reduced Graphene Oxide/Polypyrrole Ternary Nanocomposite as Electrochemical Supercapacitor Electrode )

Authors: Reza Ghanbari , E. Naderi Kalali , Y. Hu , Shaban Reza Ghorbani ,

Citation: BibTeX | EndNote

Abstract

In this work, ternary nanocomposites of iron (II and III) oxides/reduced graphene oxide/polypyrrole (iron oxide/rGO/PPy) have been prepared as the electrode materials of the supercapacitor. These nanocomposites were prepared via a facile two-step process including, the synthesis of iron oxides/rGO binary nanohybrids by a one-pot chemical-microwave method and in-situ oxidative polymerization. The morphological and structural characterizations of these nanocomposites were demonstrated decoration of the iron oxides on GO sheets and proper formation of iron oxide/rGO/PPy ternary nanocomposites. The electrochemical performance evaluation of the samples revealed charge storage mechanisms in both the binary and ternary nanocomposites. A high specific capacitance of 626.8 F g-1 was obtained for the Fe2O3/rGO/PPy nanocomposite at a constant current density of 1 A g-1 in a 1 M H2SO4 solution electrolyte. This high specific capacitance (vs 158.2 F g-1 for Fe3O4/rGO/PPy) can be assigned to the attendance of both electrical double-layer capacitance (EDLC) and pseudocapacitance mechanisms in its charge storage. The Fe2O3/rGO/PPy nanocomposite revealed the highest energy density of 87.05 Wh kg-1 with a corresponding power density of 500 W kg-1. The frequency dependence and relaxation time constant investigation of these ternary nanocomposites revealed an ideal capacitive behavior at very low frequency and resistive behavior at the higher frequencies.

Keywords

, Graphene, based composite; Iron oxides; Polypyrrole; In, situ chemical polymerization; Supercapacitor; Electrochemical measurements
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@article{paperid:1084297,
author = {Ghanbari, Reza and E. Naderi Kalali and Y. Hu and Ghorbani, Shaban Reza},
title = {Iron (II and III) Oxides/Reduced Graphene Oxide/Polypyrrole Ternary Nanocomposite as Electrochemical Supercapacitor Electrode},
journal = {Journal of the Electrochemical Society},
year = {2021},
volume = {168},
number = {3},
month = {March},
issn = {0013-4651},
pages = {30543--30543},
numpages = {0},
keywords = {Graphene-based composite; Iron oxides; Polypyrrole; In-situ chemical polymerization; Supercapacitor; Electrochemical measurements},
}

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%0 Journal Article
%T Iron (II and III) Oxides/Reduced Graphene Oxide/Polypyrrole Ternary Nanocomposite as Electrochemical Supercapacitor Electrode
%A Ghanbari, Reza
%A E. Naderi Kalali
%A Y. Hu
%A Ghorbani, Shaban Reza
%J Journal of the Electrochemical Society
%@ 0013-4651
%D 2021

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