Polyaniline-SrTiO3 nanocube based binary nanocomposite as highly stable electrode material for high performance supercapaterry
Document Type
Article
Publication Date
1-1-2019
Abstract
The current study demonstrates the simplistic approach for the synthesis of SrTiO 3 nanocubes incorporated polyaniline flakes (PANI-SrTiO 3 ) by facile in-situ oxidative polymerisation route. The synthesised nanocomposites were characterised by various spectroscopic and surface analysis techniques viz. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and Brunauer-Emmett-Teller analysis (BET). The electrochemical performance of the prepared nanocomposites for energy storage application was evaluated by electrochemical impedance spectroscopy (EIS), galvanostatic charge-discharge (GCD) and cyclic voltammetry (CV) in 1 M of KOH as an electrolyte. The electrochemical investigations demonstrate that the performance of the PANI-SrTiO 3 nanocomposite in terms of rate capability was significantly higher as compared to the polyaniline flakes and SrTiO 3 nanocubes. Supercapattery was fabricated by combining activated carbon and PANI-SrTiO 3 -250 as negative and positive electrodes respectively in order to evaluate complete device performance. It is found that fabricated supercapattery gave an energy density of 13.2 W h/kg at a power density of 299 W/kg. Additionally, the fabricated supercapattery also offered excellent stability cycle with 114% capacity retention after 4000 cycles. Moreover, the performance of PANI-SrTiO 3 -250 was found to be better than the other compositions. © 2019
Keywords
Galvanostatic charge-discharge, Nanocomposites, Polyaniline, SrTiO3 nanocubes, Supercapattery
Divisions
PHYSICS,umpedac
Funders
Sunway University, Malaysia: internal grant ( INT-2019-SST-RCNMET-02 )
Publication Title
Ceramics International
Volume
45
Issue
9
Publisher
Elsevier