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Enhanced Electrochemical Performance of Nanostructured Polyaniline–Ferric Oxide Composite as Electrode Material for Supercapacitors
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DOI：10.1002/ente.70570.png)
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Abstract
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The aim of this work revolves around the synthesis of polyaniline (PANI)–ferric oxide (Fe2O3) nanocomposites with varying weight compositions via in situ single-step chemical method and evaluation of their suitability as a promising electrode material for supercapacitors. The structural and morphological characterizations were recorded using powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, and field emission scanning electron microscopy (FE-SEM). Electrochemical attributes of the synthesized nanocomposites were comprehensively evaluated through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS), using a two-electrode system with 1 M sulfuric acid as the electrolyte. The nanocomposite comprising 70 wt% of polyaniline and 30 wt% of ferric oxide (PF30) exhibited superior energy storage among the synthesized composites with a specific capacity (Q) of 120.4 C g−1 at 0.5 A g−1 accompanied by specific energy (E) and specific power (P) of 20.06 W h kg−1 and 300 W kg−1, respectively. PF30 retained 33.36% of the initial Q up to 9000 cycles at 400 mV s−1, thus indicating its potential as a prospective electrode material.
Keywords:
ferric oxide
polyaniline
specific capacity
specific energy
supercapacitor
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